1
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Tai YC, Tzeng WY, Lin JD, Kuo YH, Chen FXR, Tu RJ, Huang MY, Pai SS, Chang NW, Tseng SY, Chen C, Lin CL, Yabushita A, Cheng SJ, Luo CW. Directly Unveiling the Energy Transfer Dynamics between Alq 3 Molecules and Si by Ultrafast Optical Pump-Probe Spectroscopy. NANO LETTERS 2023; 23:10490-10497. [PMID: 37909686 DOI: 10.1021/acs.nanolett.3c03251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
The energy transfer (ET) between organic molecules and semiconductors is a crucial mechanism for enhancing the performance of semiconductor-based optoelectronic devices, but it remains undiscovered. Here, ultrafast optical pump-probe spectroscopy was utilized to directly reveal the ET between organic Alq3 molecules and Si semiconductors. Ultrathin SiO2 dielectric layers with a thickness of 3.2-10.8 nm were inserted between Alq3 and Si to prevent charge transfer. By means of the ET from Alq3 to Si, the SiO2 thickness-dependent relaxation dynamics of photoexcited carriers in Si have been unambiguously observed on the transient reflectivity change (ΔR/R) spectra, especially for the relaxation process on a time scale of 200-350 ps. In addition, these findings also agree with the results of our calculation in a model of long-range dipole-dipole interactions, which provides critical information for developing future optoelectronic devices.
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Affiliation(s)
- Yu-Chan Tai
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Wen-Yen Tzeng
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
- Department of Electronic Engineering, National Formosa University, Yunlin 632, Taiwan
| | - Jhen-Dong Lin
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Yi-Hou Kuo
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Fu-Xiang Rikudo Chen
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Ruei-Jhe Tu
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Ming-Yang Huang
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Shyh-Shii Pai
- FAB 12B, Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu 300, Taiwan
| | - Nick Weihan Chang
- FAB 12B, Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu 300, Taiwan
| | - Sheng-Yang Tseng
- FAB 12B, Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu 300, Taiwan
| | - Chi Chen
- Research Center for Applied Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Chun-Liang Lin
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Atsushi Yabushita
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Shun-Jen Cheng
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
| | - Chih-Wei Luo
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
- Institute of Physics and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials (TCECM), National Science and Technology Council, Taipei 115, Taiwan
- Department of Physics, University of Washington, Seattle, Washington 98195, United States
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2
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Ghazy A, Ylönen J, Subramaniyam N, Karppinen M. Atomic/molecular layer deposition of europium-organic thin films on nanoplasmonic structures towards FRET-based applications. NANOSCALE 2023; 15:15865-15870. [PMID: 37750381 PMCID: PMC10551872 DOI: 10.1039/d3nr04094a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 09/16/2023] [Indexed: 09/27/2023]
Abstract
We present a novel atomic/molecular layer deposition (ALD/MLD) process for europium-organic thin films based on Eu(thd)3 and 2-hydroxyquinoline-4-carboxylic acid (HQA) precursors. The process yields with appreciably high growth rate luminescent Eu-HQA thin films in which the organic HQA component acts as a sensitizer for the red Eu3+ luminescence, extending the excitation wavelength range up to ca. 400 nm. We moreover deposit these films on nanoplasmonic structures to achieve a twentyfold enhanced emission intensity. Finally, we demonstrate the FRET-type energy transfer process for our Eu-HQA coated nanoplasmonic structures in combination with commercial Alexa647 fluorophor, underlining their potential towards novel bioimaging applications.
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Affiliation(s)
- Amr Ghazy
- Department of Chemistry and Materials Science, Aalto University, FI-00076 Espoo, Finland.
| | | | | | - Maarit Karppinen
- Department of Chemistry and Materials Science, Aalto University, FI-00076 Espoo, Finland.
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3
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Bisht H, Singh AP, Joshi HC, Jit S, Mishra H. Förster Resonance Energy Transfer between Fluorescent Organic Semiconductors: Poly(9,9-dioctylfluorene- alt-benzothiadiazole) and 6,13-Bis(triisopropylsilylethynyl)pentacene. J Phys Chem B 2022; 126:3931-3939. [PMID: 35583941 DOI: 10.1021/acs.jpcb.2c00678] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the present study, an investigation of the electronic excitation energy transfer between two p-type fluorescent semiconductors, F8BT [poly(9,9-dioctylfluorene-alcohol-benzothiadiazole] and TIPS-P [6,13-bis(triisopropylsilylethynyl)pentacene], has been carried out in a chloroform solution using steady-state and time-domain fluorescence techniques. The spectral overlap integral between donor (F8BT) emission and acceptor (TIPS-P) absorption is 2.04 × 1015 nm4/(M cm), and the corresponding critical transfer distance is 53.12 Å. In donor decay dynamics, at the lower acceptor concentrations, the observed results deviate from the Förster theory due to the combined effect of diffusion and energy migration. However, it does not exhibit energy migration and distribution for higher acceptor concentrations, and the system follows the Förster model of resonance excitation energy transfer (FRET). The higher value of the donor-acceptor interaction strength than self-interaction (donor-donor interaction) appears to be responsible for this behavior. Further, in acceptor decay, the appearance of the rise time and its decrease with the acceptor concentration confirms FRET from F8BT to TIPS-P.
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Affiliation(s)
- Hemlata Bisht
- Physics Section-MMV, Department of Physics, Banaras Hindu University, Varanasi 221005, India
| | - Abhinav Pratap Singh
- Department of Electronics Engineering, Indian Institute of Technology (BHU), Varanasi 221005, India
| | - Hem Chandra Joshi
- Laser Diagnostics Division, Institute for Plasma Research Gandhinagar, Ahmadabad 382428, India
| | - Satyabrata Jit
- Department of Electronics Engineering, Indian Institute of Technology (BHU), Varanasi 221005, India
| | - Hirdyesh Mishra
- Physics Section-MMV, Department of Physics, Banaras Hindu University, Varanasi 221005, India
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4
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Gao X, Ma X, Liu Z, Gao J, Qi Q, Yu Y, Gao Y, Ma Z, Ye L, Min J, Wen J, Gao J, Zhang F, Liu Z. Novel Third Components with (Thio)barbituric Acid as the End Groups Improving the Efficiency of Ternary Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:23701-23708. [PMID: 35546579 DOI: 10.1021/acsami.2c03196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Developing novel third component is critical for the ternary organic solar cells (TOSCs). Herein, we design and synthesize two novel third components, MAZ-1 and MAZ-2, with 1,3-diethyl-2-thiobarbituric acid and 1,3-dimethylbarbituric acid as the weak electron withdrawing end groups, respectively. Both MAZ-1 and MAZ-2 could improve the photovoltaic performance of the binary OSCs based on D18:Y6 which exhibit the power conversion efficiency (PCE) of 17%, because the third components can optimize the phase separation, suppress the bimolecular recombination, and decrease the nonradiative energy loss in ternary blends. The PCE of the optimized TOSCs approaches 18% along with the simultaneous increase in open circuit voltage, short circuit current density, and fill factor by incorporating 10 wt % MAZ-1 and MAZ-2 in acceptors. This work enriches the building blocks for novel third components for achieving highly efficient TOSCs.
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Affiliation(s)
- Xiang Gao
- Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Xiaoling Ma
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China
| | - Zifeng Liu
- Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Jiaxin Gao
- Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Qingchun Qi
- School of Materials Science & Engineering, Tianjin University, Tianjin 300350, China
| | - Yue Yu
- The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, China
| | - Yang Gao
- Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Zaifei Ma
- Center for Advanced Low-dimension Materials, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Long Ye
- School of Materials Science & Engineering, Tianjin University, Tianjin 300350, China
| | - Jie Min
- The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, China
| | - Jing Wen
- Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Jianhong Gao
- Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Fujun Zhang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China
| | - Zhitian Liu
- Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430205, China
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5
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Wouk L, Holakoei S, Benatto L, Pacheco KRM, de Jesus Bassi M, de Oliveira CKBQM, Bagnis D, Rocco MLM, Roman LS. Morphology and energy transfer study between conjugated polymers thin films: experimental and theoretical approaches. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:214010. [PMID: 35038696 DOI: 10.1088/1361-648x/ac4c12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
In this paper, the effect of a silafluorene derivative copolymer, the poly[2,7-(9,9-dioctyl-dibenzosilole)-alt-4,7-bis(thiophene-2-yl)benzo-2,1,3-thiadiazole] (PSiF-DBT) sensitized by a simpler homopolymer, the poly[2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) were investigated in a bilayer and ternary blend configuration. The energy transfer between the polymers prior to electron transfer to the acceptors can be an efficient alternative to photocurrent improvement in photovoltaic devices. The interactions between the two donor polymer films were evaluated optically and morphologically with several experimental techniques and correlated to the photovoltaic performance. Improved photon to charge conversion was observed in the blend films at different device geometries-considering bilayer devices with fullerene and inverted flexible devices blade coated in air conditions with a non-fullerene small molecule acceptor. Resonant Auger spectroscopy using the core-hole clock method was employed to evaluate the ultrafast charge delocalization times of conjugated polymers in the low-femtosecond regime. Density functional theory and time-dependent DFT methods were used to help understand some experimental observations. The results show that the homopolymer can improve the absorption spectra and the nonradiative-energy transfer from MDMO-PPV to PSiF-DBT and act as a photosensitizer in the copolymer units. In addition, the PSiF-DBT blended with MDMO-PPV exhibits a more organized structure than the neat material resulting in better absorption stability of films kept under continuous illumination.
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Affiliation(s)
- Luana Wouk
- Department of Physics, Federal University of Paraná, Curitiba, 31531-990 Brazil
- CSEM Brasil, Belo Horizonte, 31035-536, Brazil
| | - Soheila Holakoei
- Department of Physics, Federal University of Paraná, Curitiba, 31531-990 Brazil
- Institute of Chemistry, Federal Universityof Rio de Janeiro, Rio de Janeiro, 21941-909 Brazil
| | - Leandro Benatto
- Department of Physics, Federal University of Paraná, Curitiba, 31531-990 Brazil
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6
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Wang Y, Xu C, Wang C, Yan Y, Sun Q, Ma X, Zhang F. Ternary‐organic photovoltaics with
J71
as donor and two compatible nonfullerene acceptors. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20210118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yue Wang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education Beijing Jiaotong University Beijing P. R. China
| | - Chunyu Xu
- Key Laboratory of Luminescence and Optical Information, Ministry of Education Beijing Jiaotong University Beijing P. R. China
| | - Chong Wang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education Beijing Jiaotong University Beijing P. R. China
| | - Yutong Yan
- Key Laboratory of Luminescence and Optical Information, Ministry of Education Beijing Jiaotong University Beijing P. R. China
| | - Qianqian Sun
- Collaborative Innovation Center of Light Manipulations and Applications in Universities of Shandong, School of Physics and Electronics Shandong Normal University Jinan P. R. China
| | - Xiaoling Ma
- Key Laboratory of Luminescence and Optical Information, Ministry of Education Beijing Jiaotong University Beijing P. R. China
| | - Fujun Zhang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education Beijing Jiaotong University Beijing P. R. China
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7
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Elsayed MH, Abdellah M, Hung YH, Jayakumar J, Ting LY, Elewa AM, Chang CL, Lin WC, Wang KL, Abdel-Hafiez M, Hung HW, Horie M, Chou HH. Hydrophobic and Hydrophilic Conjugated Polymer Dots as Binary Photocatalysts for Enhanced Visible-Light-Driven Hydrogen Evolution through Förster Resonance Energy Transfer. ACS APPLIED MATERIALS & INTERFACES 2021; 13:56554-56565. [PMID: 34783531 DOI: 10.1021/acsami.1c15812] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Organic semiconducting polymers exhibited promising photocatalytic behavior for hydrogen (H2) evolution, especially when prepared in the form of polymer dots (Pdots). However, the Pdot structures were formed using common nonconjugated amphiphilic polymers, which have a negative effect on charge transfer between photocatalysts and reactants and are unable to participate in the photocatalytic reaction. This study presents a new strategy for constructing binary Pdot photocatalysts by replacing the nonconjugated amphiphilic polymer typically employed in the preparation of polymer nanoparticles (Pdots) with a low-molecular-weight conjugated polyelectrolyte. The as-prepared polyelectrolyte/hydrophobic polymer-based binary Pdots truly enhance the electron transfer between the Pt cocatalyst and the polymer photocatalyst with good water dispersibility. Moreover, unlike the nonconjugated amphiphilic polymer, the photophysics and mechanism of this photocatalytic system through time-correlated single-photon counting (TCSPC) and transient absorption (TA) measurements confirmed the Förster resonance energy transfer (FRET) between the polyelectrolyte as a donor and the hydrophobic polymer as an acceptor. As a result, the designated binary Pdot photocatalysts significantly enhanced the hydrogen evolution rate (HER) of 43 900 μmol g-1 h-1 (63.5 μmol h-1, at 420 nm) for PTTPA/PFTBTA Pdots under visible-light irradiation.
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Affiliation(s)
- Mohamed Hammad Elsayed
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
- Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, 11884 Cairo, Egypt
| | - Mohamed Abdellah
- Chemical Physics and NanoLund, Lund University, 22100 Lund, Sweden
- Department of Chemistry, Qena Faculty of Science, South Valley University, 83523 Qena, Egypt
| | - Yi-Hao Hung
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Jayachandran Jayakumar
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Li-Yu Ting
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Ahmed M Elewa
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Chih-Li Chang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Wei-Cheng Lin
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Kuo-Lung Wang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Mahmoud Abdel-Hafiez
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
- Faculty of Science, Physics Department, Fayoum University, 63514 Fayoum, Egypt
| | - Hsiao-Wen Hung
- Lighting Energy-Saving Department, Intelligent Energy-Saving Systems Division, Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu 310401, Taiwan
| | - Masaki Horie
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Ho-Hsiu Chou
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
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8
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Kim M, Choi Y, Hwan Lee D, Min J, Pu YJ, Park T. Roles and Impacts of Ancillary Materials for Multi-Component Blend Organic Photovoltaics towards High Efficiency and Stability. CHEMSUSCHEM 2021; 14:3475-3487. [PMID: 34164933 DOI: 10.1002/cssc.202100887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/21/2021] [Indexed: 06/13/2023]
Abstract
Organic photovoltaics (OPVs) are a promising next-generation photovoltaic technology with great potential for wearable and transparent device applications. Over the past decades, remarkable advances in device efficiency close to 20 % have been made for bulk heterojunction (BHJ)-based OPV devices with long-term stability, and room for further improvements still exists. In recent years, ancillary components have been demonstrated as effective in improving the photovoltaic performance of OPVs by controlling the optoelectronic and morphological properties of BHJ blends. Herein, an updated understanding of polymer-based blend OPVs is provided, and the role and impact of ancillary components in various blend systems are categorized and discussed. Lastly, a strategic perspective on the ancillary components of blend-based OPVs for commercialization is provided.
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Affiliation(s)
- Minjun Kim
- RIKEN Center for Emergent Matter Science (CEMS), Wako, 351-0198, Saitama, Japan
| | - Yelim Choi
- Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, 37673, Pohang, Kyoungbuk, Korea
| | - Dae Hwan Lee
- Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, 37673, Pohang, Kyoungbuk, Korea
| | - Jihyun Min
- Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, 37673, Pohang, Kyoungbuk, Korea
| | - Yong-Jin Pu
- RIKEN Center for Emergent Matter Science (CEMS), Wako, 351-0198, Saitama, Japan
| | - Taiho Park
- Department of Chemical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, 37673, Pohang, Kyoungbuk, Korea
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9
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Li S, Sun Y, Zhou B, Fu Q, Meng L, Yang Y, Wang J, Yao Z, Wan X, Chen Y. Concurrently Improved Jsc, Fill Factor, and Stability in a Ternary Organic Solar Cell Enabled by a C-Shaped Non-fullerene Acceptor and Its Structurally Similar Third Component. ACS APPLIED MATERIALS & INTERFACES 2021; 13:40766-40777. [PMID: 34424658 DOI: 10.1021/acsami.1c13035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A ternary strategy is recognized as a promising approach that enjoys both the simplicity of fabrication conditions and potential to improve performance in organic solar cells. Herein, a C-shaped narrow band gap non-fullerene acceptor GL1 with a C2v symmetry based on a new core was designed and synthesized. A power conversion efficiency (PCE) of 11.43% was achieved by employing PBDB-T:GL1 as an active layer to fabricate photovoltaic devices. To further promote photovoltaic performance, following a similar-structure prescreen principle, a middle band gap acceptor F-2Cl with the same backbone shape, side-chain distribution, and dipole moment orientation as GL1 was introduced as the guest acceptor into the active layer. Thus, benefiting from the collaboration of complementary absorption, cascade energy levels, and well-modified microstructure of the active layer, a 13.17% PCE was obtained with concurrently elevated Jsc, fill factor, and stability for the optimized ternary device. This work presents a successful example of prescreening the third component to simplify the workload for a high-performance ternary device.
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Affiliation(s)
- Shitong Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yanna Sun
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Bailin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qiang Fu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Lingxian Meng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yang Yang
- The Institute of Seawater Desalination and Multipurpose Utilization, Ministry of Natural Resources (Tianjin), Tianjin 300192, P. R. China
| | - Jian Wang
- The Institute of Seawater Desalination and Multipurpose Utilization, Ministry of Natural Resources (Tianjin), Tianjin 300192, P. R. China
| | - Zhaoyang Yao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiangjian Wan
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yongsheng Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, College of Chemistry, Nankai University, Tianjin 300071, China
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10
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Sharma P, Rana A, Waheed S, Pareek S, Karak S. Defect mediated improved charge carrier dynamics in hybrid bulk-heterojunction solar cell induced by phase pure iron pyrite nanocubes. NANOTECHNOLOGY 2021; 32:265401. [PMID: 33524955 DOI: 10.1088/1361-6528/abe1f2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
In this article, the synthesis of phase pure iron pyrite nanocubes (FeS2NCs) and their various effects on the charge carrier dynamics and photovoltaic performances of P3HT:PC71BM based hybrid bulk-heterojunction solar cells have been studied. The optimum doping concentration of FeS2NCs was found to be 0.3 wt%. For the optimally doped devices, the short-circuit current density was found to have improved from 5.47 to 7.99 mA cm-2leading to an overall cell efficiency improvement from 2.10% to 3.22% as compared to the undoped reference devices. The enhancement in photovoltaic performance is mainly attributed to the formation of localized energy states near the band edges leading to higher carrier generation rate by 72% whereas carrier dissociation probability is also increased by 13%. Urbach energy estimation reveals that the optimally doped devices have achieved a relatively balanced amount of localized states resulting in reduced non-radiative recombination. Such localized defect states formation with FeS2NCs doping was also found to have significant influence over the charge carrier dynamics of the active layer. Transient photocurrent and photovoltage studies revealed that FeS2NCs assist in faster carrier extraction by reducing the transport time from 1.4 to 0.6μs and by enhancing carrier recombination time from 51.7 to 78.9μs for the reference and optimum devices respectively. Such an unorthodox approach of defect state assisted efficiency improvement demonstrates the importance of simultaneously understanding the charge carrier dynamics and photovoltaic performance for rational device optimization, and opens new prospects for developing high-efficiency solution processable hybrid devices.
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Affiliation(s)
- Punit Sharma
- Organic & Hybrid Electronic Device Laboratory (OHEDL), Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Aniket Rana
- Organic & Hybrid Electronic Device Laboratory (OHEDL), Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Sobia Waheed
- Organic & Hybrid Electronic Device Laboratory (OHEDL), Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Saurabh Pareek
- Organic & Hybrid Electronic Device Laboratory (OHEDL), Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Supravat Karak
- Organic & Hybrid Electronic Device Laboratory (OHEDL), Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India
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11
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Huang S, Kang B, Duan L, Zhang D. Highly efficient inverted polymer solar cells by using solution processed MgO/ZnO composite interfacial layers. J Colloid Interface Sci 2021; 583:178-187. [DOI: 10.1016/j.jcis.2020.09.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 09/14/2020] [Accepted: 09/14/2020] [Indexed: 01/22/2023]
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12
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Wen Z, Wang T, Chen Z, Jiang T, Feng L, Feng X, Qin C, Hao X. Influence of donor:acceptor ratio on charge transfer dynamics in non-fullerene organic bulk heterojunctions. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.02.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Nakamura T. Excitation Energy Transfer Dynamics in a Low-Band-Gap Copolymer: Two-Dimensional Electronic Spectroscopy of PTB7 in Solution. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takumi Nakamura
- Analysis Technology Center, Research and Development Management Headquarters, FUJIFILM Corporation, 210 Nakanuma, Minamiashigara 251-0193, Japan
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14
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Chakraborty A, Ilic S, Cai M, Gibbons BJ, Yang X, Slamowitz CC, Morris AJ. Role of Spin-Orbit Coupling in Long Range Energy Transfer in Metal-Organic Frameworks. J Am Chem Soc 2020; 142:20434-20443. [PMID: 33215496 DOI: 10.1021/jacs.0c09503] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Metal-organic frameworks (MOFs) are emerging as a promising platform for solar energy conversion applications. Their potential utilization as efficient chromophores in artificial photosynthesis is closely related to the understanding of light-harvesting and energy transfer processes that occur within these molecular scaffolds. Herein, we present the photophysical investigation of Ru(II), Ir(III), and Os(II) polypyridyl complexes incorporated into the backbone of UiO-67. In this work, we systematically study the effect of spin-orbit coupling on dipole-dipole energy transfer in MOFs using steady-state and time-resolved spectroscopic techniques. The results of our work indicate successful triplet-to-singlet energy transfer and a sizable increase in the transfer kinetics and critical distance, as direct consequences of strong spin-orbit couplings. Remarkably, the reported R0 value for OsDCBPY (R0 = 88 ± 10 Å) represents one of the largest Förster distances observed in an MOF. Collectively, this work contributes to the general knowledge of energy transfer in materials and provides groundwork for efficient utilization in artificial photosynthetic assemblies.
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Affiliation(s)
- Arnab Chakraborty
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Stefan Ilic
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Meng Cai
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Bradley J Gibbons
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Xiaozhou Yang
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Connor C Slamowitz
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
| | - Amanda J Morris
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060, United States
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15
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Zhang Q, Linardy E, Wang X, Eda G. Excitonic Energy Transfer in Heterostructures of Quasi-2D Perovskite and Monolayer WS 2. ACS NANO 2020; 14:11482-11489. [PMID: 32790345 DOI: 10.1021/acsnano.0c03893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Quasi-two-dimensional (2D) organic-inorganic hybrid perovskite is a re-emerging material with strongly excitonic absorption and emission properties that are attractive for photonics and optoelectronics. Here we report the experimental observation of excitonic energy transfer (ET) in van der Waals heterostructures consisting of quasi-2D hybrid perovskite (C6H5C2H4NH3)2PbI4 (PEPI) and monolayer WS2. Photoluminescence excitation spectroscopy reveals a distinct ground exciton resonance feature of perovskite, evidencing ET from perovskite to WS2. We find unexpectedly high photoluminescence enhancement factors of up to ∼8, which cannot be explained by single-interface ET. Our analysis reveals that interlayer ET across the bulk of the layered perovskite also contributes to the large enhancement factor. Further, from the weak temperature dependence of the lower-limit ET rate, which we found to be ∼3 ns-1, we conclude that the Förster-type mechanism is responsible.
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Affiliation(s)
- Qi Zhang
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542
| | - Eric Linardy
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542
- Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore 117546
| | - Xinyun Wang
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542
- Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore 117546
| | - Goki Eda
- Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542
- Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore 117546
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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16
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Pareek S, Waheed S, Rana A, Sharma P, Karak S. Graphitic carbon nitride quantum dots (g-C3N4) to improve photovoltaic performance of polymer solar cell by combining Förster resonance energy transfer (FRET) and morphological effects. NANO EXPRESS 2020. [DOI: 10.1088/2632-959x/ab9b2f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Abstract
In this study, multifunctionality of graphitic carbon nitride quantum dots (g-C3N4 QDs) have been explored as a photovoltaic booster for polymer solar cell. Facile synthesis method of g-C3N4 QDs using organic solvent like o-dichlorobenzene which is commonly used for cell fabrication, has been demonstrated. Photovoltaic effect formation and various effects of QDs on energy transfer, carrier transport and nanoscale film morphology of the devices have been investigated thoroughly by incorporating g-C3N4 QDs as a third component into a well-established material combination of P3HT: PC71BM blend films. While systematic variation of device performances was observed with varying concentration of QDs, at an optimal concentration of 2%, almost 40% performance improvement was achieved compared to the pristine devices. The g-C3N4 QDs were found to assist Förster resonance energy transfer (FRET) between the QDs and host polymer, improving overall energy harvesting capability of the devices. The emission spectra of g-C3N4 QDs (λ
Ems = 400–550) and absorption spectra of P3HT (λ
Abs = 400–600) were found to have overlapping features which enabled the QDs to transfer ultraviolet region photon energy to P3HT. The g-C3N4 QDs were also found to be favorable for maintaining nanoscale phase segregation of the active layer with improved crystallinity which is crucial for efficient exciton dissociation and faster charge extraction. The enhanced power conversion efficiency thus attributed to the combined consequences of improved morphology and FRET effect. This study opens new prospects for developing high-efficiency solution processable photovoltaic devices using g-C3N4 QDs as the third component of the active layer.
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17
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Zhang H, Du X, Tang Y, Lu X, Zhou L, Zheng C, Lin H, Tao S. Introducing Trifluoromethyl to Strengthen Hydrogen Bond for High Efficiency Organic Solar Cells. Front Chem 2020; 8:190. [PMID: 32266212 PMCID: PMC7105863 DOI: 10.3389/fchem.2020.00190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 02/28/2020] [Indexed: 11/13/2022] Open
Abstract
Nowadays, the ternary strategy has become a common way to improve the power conversion efficiency (PCE) of organic solar cells (OSCs). The intermolecular interaction between the third component and donor or acceptor plays a key role in achieving a high performance. However, hydrogen bond as a strong intermolecular interaction is rarely considered in ternary OSCs. In this work, we introduce trifluoromethyl on a newly synthesized small molecular DTBO to strength hydrogen bonds between DTBO and IEICO-4F. Due to the existence of hydrogen bonds has a strong impact on electrostatic potential (ESP) and benefits π-π stacking in the active layer, the ternary OSCs show superior charge extraction and low charge recombination. In DTBO, PTB7-Th and IEICO-4F based ternary devices, the PCE increases from 11.02 to 12.48%, and short-circuit current density (JSC) increases from 24.94 to 26.43 mA/cm2 compared with typical binary devices. Moreover, the addition of DTBO can realize an energy transfer from DTBO to PTB7-Th and broaden the absorption spectrum of blend films. Grazing-incidence wide-angle X-ray scattering (GIWAXS) patterns show that the π-π stacking distance of IEICO-4F decreased after adding 10 wt% DTBO. The effect of the hydrogen bond is also achieved in the PM6: Y6 system, showing 16.64% efficiency by comparison to the 15.49% efficiency of binary system. This work demonstrates that introduce trifluoromethyl to enhance hydrogen bond which improve π-π stacking can achieve higher performance in OSCs.
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Affiliation(s)
- Hao Zhang
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
| | - Xiaoyang Du
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
| | - Yunhan Tang
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
| | - Xi Lu
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
| | - Lei Zhou
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
| | - Caijun Zheng
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
| | - Hui Lin
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
| | - Silu Tao
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, China
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18
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Lim J, Kim NY, Jang W, An US, Kyaw AKK, Kim YH, Wang DH. Selective Soxhlets extraction to enhance solubility of newly-synthesized poly(indoloindole-selenophene vinylene selenophene) donor for photovoltaic applications. NANO CONVERGENCE 2020; 7:9. [PMID: 32152826 PMCID: PMC7062981 DOI: 10.1186/s40580-020-0219-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 01/14/2020] [Indexed: 05/10/2023]
Abstract
An electron-rich fused indoloindole-based poly(indoloindole-selenophene vinylene selenophene) was synthesized and characterized. Soxhlet can be obtained by continuously purifying the product with a specific solvent and obtaining a pure polymer with a high concentration. Molecular weight is affected by the vapor pressure of marginal solvent, and the polymer was fractionated using tetrahydrofuran, chloroform, and chlorobenzene. Solubility is closely related to the morphology of bulk heterojunction and device parameters. In the solution process of fabricating the organic solar cell, securement of solubility has a great effect on the performance of the device, because morphology and orientation of a photo-active layer which significantly affect charge transport in the device. Since tetrahydrofuran (THF) Soxhlet solvents have high vapor pressure and appropriate solubility parameters, THF induced the best solubility of P-IDI-SVS materials for organic solvents. And through additive optimization, the performance of the device based on P-IDI-SVS from THF-Soxhlet extraction was enhanced. This is expected to be a meaningful study because the effect on solubility of Soxhlet solvent suggests factors to be considered in the solution process in organic solar cell research. In addition, surface modified bulk heterojunction was observed using atomic force microscopy, photoluminescence, time-correlated single photon counting and Raman spectroscopy analysis.
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Affiliation(s)
- Jihyun Lim
- School of Integrative Engineering, Chung-Ang University, 84 Heukseok-Ro, Dongjak-gu, Seoul, 156-756 Republic of Korea
| | - Na Yeong Kim
- Department of Chemistry and RINS, Gyeongsang National University, Jin-ju, 660-701 Republic of Korea
| | - Woongsik Jang
- School of Integrative Engineering, Chung-Ang University, 84 Heukseok-Ro, Dongjak-gu, Seoul, 156-756 Republic of Korea
| | - Un Su An
- Department of Chemistry and RINS, Gyeongsang National University, Jin-ju, 660-701 Republic of Korea
| | - Aung Ko Ko Kyaw
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055 People’s Republic of China
| | - Yun-Hi Kim
- Department of Chemistry and RINS, Gyeongsang National University, Jin-ju, 660-701 Republic of Korea
| | - Dong Hwan Wang
- School of Integrative Engineering, Chung-Ang University, 84 Heukseok-Ro, Dongjak-gu, Seoul, 156-756 Republic of Korea
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19
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Benzothiadiazole Based Cascade Material to Boost the Performance of Inverted Ternary Organic Solar Cells. ENERGIES 2020. [DOI: 10.3390/en13020450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A conjugated, ladder-type multi-fused ring 4,7-dithienbenzothiadiazole:thiophene derivative, named as compound ‘T’, was for the first time incorporated, within the PTB7:PC71BM photoactive layer for inverted ternary organic solar cells (TOSCs) realization. The effective energy level offset caused by compound T between the polymeric donor and fullerene acceptor materials, as well as its resulting potential as electron cascade material contribute to an enhanced exciton dissociation, electron transfer facilitator and thus improved overall photovoltaic performance. The engineering optimization of the inverted TOSC, ITO/PFN/PTB7:Compound T(5% v/v):PC71BM/MoO3/Al, resulted in an overall power conversion efficiency (PCE) of 8.34%, with a short-circuit current density (Jsc) of 16.75 mA cm−2, open-circuit voltage (Voc) of 0.74 V and a fill factor (FF) of 68.1%, under AM1.5G illumination. This photovoltaic performance was improved by approximately 12% with respect to the control binary device.
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20
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Song J, Li C, Zhu L, Guo J, Xu J, Zhang X, Weng K, Zhang K, Min J, Hao X, Zhang Y, Liu F, Sun Y. Ternary Organic Solar Cells with Efficiency >16.5% Based on Two Compatible Nonfullerene Acceptors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1905645. [PMID: 31736170 DOI: 10.1002/adma.201905645] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/10/2019] [Indexed: 06/10/2023]
Abstract
A ternary structure has been demonstrated as being an effective strategy to realize high power conversion efficiency (PCE) in organic solar cells (OSCs); however, general materials selection rules still remain incompletely understood. In this work, two nonfullerene small-molecule acceptors 3TP3T-4F and 3TP3T-IC are synthesized and incorporated as a third component in PM6:Y6 binary blends. The photovoltaic behaviors in the resultant ternary OSCs differ significantly, despite the comparable energy levels. It is found that incorporation of 15% 3TP3T-4F into the PM6:Y6 blend results in facilitating exciton dissociation, increasing charge transport, and reducing trap-assisted recombination. All these features are responsible for the enlarged PCE of 16.7% (certified as 16.2%) in the PM6:Y6:3TP3T-4F ternary OSCs, higher than that (15.6%) in the 3TP3T-IC containing ternary devices. The performance differences are mainly ascribed to the compatibility between the third component and the host materials. The 3TP3T-4F guest acceptor exhibits an excellent compatibility with Y6, tending to form well-mixed phases in the ternary blend without disrupting the favored bicontinuous transport networks, whereas 3TP3T-IC displays a morphological incompatibility with Y6. This work highlights the importance of considering the compatibility for materials selection toward high-efficiency ternary organic OSCs.
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Affiliation(s)
- Jiali Song
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Chao Li
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jing Guo
- The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, P. R. China
| | - Jinqiu Xu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Xuning Zhang
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Kangkang Weng
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Kangning Zhang
- School of Physics State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Jie Min
- The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, P. R. China
| | - Xiaotao Hao
- School of Physics State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Yuan Zhang
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Feng Liu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yanming Sun
- School of Chemistry, Beihang University, Beijing, 100191, P. R. China
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21
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Tang Y, Sun H, Wu Z, Zhang Y, Zhang G, Su M, Zhou X, Wu X, Sun W, Zhang X, Liu B, Chen W, Liao Q, Woo HY, Guo X. A New Wide Bandgap Donor Polymer for Efficient Nonfullerene Organic Solar Cells with a Large Open-Circuit Voltage. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1901773. [PMID: 31728295 PMCID: PMC6839623 DOI: 10.1002/advs.201901773] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/13/2019] [Indexed: 05/16/2023]
Abstract
Significant progress has been made in nonfullerene small molecule acceptors (NF-SMAs) that leads to a consistent increase of power conversion efficiency (PCE) of nonfullerene organic solar cells (NF-OSCs). To achieve better compatibility with high-performance NF-SMAs, the direction of molecular design for donor polymers is toward wide bandgap (WBG), tailored properties, and preferentially ecofriendly processability for device fabrication. Here, a weak acceptor unit, methyl 2,5-dibromo-4-fluorothiophene-3-carboxylate (FE-T), is synthesized and copolymerized with benzo[1,2-b:4,5-b']dithiophene (BDT) to afford a series of nonhalogenated solvent processable WBG polymers P1-P3 with a distinct side chain on FE-T. The incorporation of FE-T leads to polymers with a deep highest occupied molecular orbital (HOMO) level of -5.60-5.70 eV, a complementary absorption to NF-SMAs, and a planar molecular conformation. When combined with the narrow bandgap acceptor ITIC-Th, the solar cell based on P1 with the shortest methyl chain on FE-T achieves a PCE of 11.39% with a large V oc of 1.01 V and a J sc of 17.89 mA cm-2. Moreover, a PCE of 12.11% is attained for ternary cells based on WBG P1, narrow bandgap PTB7-Th, and acceptor IEICO-4F. These results demonstrate that the new FE-T is a highly promising acceptor unit to construct WBG polymers for efficient NF-OSCs.
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Affiliation(s)
- Yumin Tang
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Huiliang Sun
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Ziang Wu
- Department of ChemistryKorea UniversitySeoul136‐713South Korea
| | - Yujie Zhang
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Guangye Zhang
- eFlexPV Limited (China)Room 228, Block 11, Jin Xiu Da Di, No. 121 Hu Di Pai Song Yuan Sha Community, Guanhu Street, Longhua DistrictShenzhenGuangdong518000China
| | - Mengyao Su
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Xin Zhou
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Xia Wu
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Weipeng Sun
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Xianhe Zhang
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Bin Liu
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Wei Chen
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Qiaogan Liao
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
| | - Han Young Woo
- Department of ChemistryKorea UniversitySeoul136‐713South Korea
| | - Xugang Guo
- Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic ElectronicsSouthern University of Science and Technology (SUSTech)No. 1088, Xueyuan RoadShenzhenGuangdong518055China
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22
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Yu J, Sharma M, Delikanli S, Birowosuto MD, Demir HV, Dang C. Mutual Energy Transfer in a Binary Colloidal Quantum Well Complex. J Phys Chem Lett 2019; 10:5193-5199. [PMID: 31434477 DOI: 10.1021/acs.jpclett.9b01939] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Förster resonance energy transfer (FRET) is a fundamental process that is key to optical biosensing, photosynthetic light harvesting, and down-converted light emission. However, in total, conventional FRET in a donor-acceptor pair is essentially unidirectional, which impedes practical application of FRET-based technologies. Here, we propose a mutual FRET scheme that is uniquely bidirectional in a binary colloidal quantum well (CQW) complex enabled by utilizing the d orbital electrons in a dopant-host CQW system. Steady-state emission intensity, time-resolved, and photoluminescence excitation spectroscopies have demonstrated that two distinct CQWs play the role of donor and acceptor simultaneously in this complex consisting of 3 monolayer (ML) copper-doped CQWs and 4 ML undoped CQWs. Band-edge excitons in 3 ML CQWs effectively transfer the excitation to excitons in 4 ML CQWs, whose energy is also harvested backward by the dopants in 3 ML CQWs. This binary CQW complex, which offers a unique mutual energy-transfer mechanism, may unlock revolutionary FRET-based technologies.
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Affiliation(s)
- Junhong Yu
- LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, The Photonics Institute (TPI), Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
| | - Manoj Sharma
- LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, The Photonics Institute (TPI), Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Department of Electrical and Electronics Engineering and Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Bilkent, Ankara 06800, Turkey
| | - Savas Delikanli
- LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, The Photonics Institute (TPI), Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Department of Electrical and Electronics Engineering and Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Bilkent, Ankara 06800, Turkey
| | - Muhammad Danang Birowosuto
- CINTRA UMI CNRS/NTU/THALES 3288, Research Techno Plaza, 50 Nanyang Drive, Border X Block, Level 6, 637553 Singapore
| | - Hilmi Volkan Demir
- LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, The Photonics Institute (TPI), Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- Department of Electrical and Electronics Engineering and Department of Physics, UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Bilkent, Ankara 06800, Turkey
- School of Physical and Mathematical Sciences, Division of Physics and Applied Physics, Nanyang Technological University, 639798 Singapore
| | - Cuong Dang
- LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, The Photonics Institute (TPI), Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore
- CINTRA UMI CNRS/NTU/THALES 3288, Research Techno Plaza, 50 Nanyang Drive, Border X Block, Level 6, 637553 Singapore
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23
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Wu L, Xie L, Tian H, Peng R, Huang J, Fanady B, Song W, Tan S, Bi W, Ge Z. Efficient ternary organic solar cells based on a twin spiro-type non-fullerene acceptor. Sci Bull (Beijing) 2019; 64:1087-1094. [PMID: 36659769 DOI: 10.1016/j.scib.2019.06.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/31/2019] [Accepted: 06/05/2019] [Indexed: 01/21/2023]
Abstract
A novel small-molecule (SM) acceptor DTF-IC is designed and synthesized in this work. The power conversion efficiency (PCE) of ternary OSCs increased up to 12.14% from 10.90% by incorporating 10 wt% of DTF-IC as second acceptors into the binary OSCs consisting of PBDB-T as donor and IT-M as acceptor. This was mainly due to the large increase in short-circuit current (Jsc) from 16.18 to 17.95 mA/cm2, without any drop in the open-circuit voltage (Voc) and fill factor (FF). The addition of DTF-IC enabled the donor and acceptor to form a distinct complementary absorption profile in the visible-light region, which boosted the photon harvesting in the range of 730-800 nm and consequently increased the Jsc of the ternary system by 11%. Moreover, there was an energy transfer between the two SM acceptors, favorable for enhancing charge separation and transfer as well as reducing charge recombination at PBDB-T:IT-M and PBDB-T:DTF-IC interface. Simultaneously, HOMO and LUMO energy levels of DTF-IC were lower than those of PBDB-T, but still higher than those of IT-M. Thus, DTF-IC is able to provide a cascading energy level with the host donor and acceptor which are beneficial for efficient charge transfer between the acceptors and facilitating exciton dissociation and carrier transport. Meanwhile, the highly crystalline DTF-IC as a third component can improve the crystallization process of the active layer while maintaining proper phase separation. This work proposes a novel idea for non-fullerene acceptors achieved via twin spiro-type structure modifying by indanone and provides a new direction for the selection of ternary solar cell materials.
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Affiliation(s)
- Lirong Wu
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, Tianjin 300401, China
| | - Lingchao Xie
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Hanmin Tian
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, Tianjin 300401, China
| | - Ruixiang Peng
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jiaming Huang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Billy Fanady
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Wei Song
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Songting Tan
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Wengang Bi
- School of Electronics and Information Engineering, Tianjin Key Laboratory of Electronic Materials and Devices, Hebei University of Technology, Tianjin 300401, China.
| | - Ziyi Ge
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
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Li K, Zhu Y, Zhang Y, Zhang D, Zhou J, Li X, Ruan S. Built-in electric field promotes photoexcitation separation and depletion of most carriers in TiO 2:C UV detectors. NANOTECHNOLOGY 2019; 30:295502. [PMID: 30947163 DOI: 10.1088/1361-6528/ab15f0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
TiO2 has been widely used in ultraviolet (UV) photodetectors, but due to the large number of structural defects and strong band-to-band recombination of the exciton in TiO2, the devices usually have large dark current (I d) and low light current (I l), which seriously reduces the sensitivity and responsivity (R) of the TiO2 based devices. In this work, carbon (C) quantum dots (QDs) are introduced into TiO2 film to ameliorate these issues. Due to the difference of work function between TiO2 nanoparticles and C QDs, the built-in electric field (E bi) can be formed, which effectively facilitates the photogenerated exciton dissociation in the TiO2 film under UV illumination. Meanwhile, the constructed depletion region in dark reduces the majority carrier density, thus decreasing the I d of the photodetector. Moreover, the E bi and depletion region will also contribute to the faster charge collection under UV illumination and recombination of the electron in dark, which is beneficial for the improved response/recovery speed of the device.
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Affiliation(s)
- Kanzhe Li
- State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun 130012, People's Republic of China
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25
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Sun L, Xu X, Song S, Zhang Y, Miao C, Liu X, Xing G, Zhang S. Medium‐Bandgap Conjugated Polymer Donors for Organic Photovoltaics. Macromol Rapid Commun 2019; 40:e1900074. [DOI: 10.1002/marc.201900074] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/30/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Liya Sun
- L. Sun, X. Xu, S. Song, Y. Zhang, Dr. C. Miao, Prof. X. Liu, Prof. S. ZhangKey Laboratory of Flexible Electronics & Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Xiangfei Xu
- L. Sun, X. Xu, S. Song, Y. Zhang, Dr. C. Miao, Prof. X. Liu, Prof. S. ZhangKey Laboratory of Flexible Electronics & Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Shan Song
- L. Sun, X. Xu, S. Song, Y. Zhang, Dr. C. Miao, Prof. X. Liu, Prof. S. ZhangKey Laboratory of Flexible Electronics & Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Yangqian Zhang
- L. Sun, X. Xu, S. Song, Y. Zhang, Dr. C. Miao, Prof. X. Liu, Prof. S. ZhangKey Laboratory of Flexible Electronics & Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Chunyang Miao
- L. Sun, X. Xu, S. Song, Y. Zhang, Dr. C. Miao, Prof. X. Liu, Prof. S. ZhangKey Laboratory of Flexible Electronics & Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Xiang Liu
- L. Sun, X. Xu, S. Song, Y. Zhang, Dr. C. Miao, Prof. X. Liu, Prof. S. ZhangKey Laboratory of Flexible Electronics & Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Guichuan Xing
- Institute of Applied Physics and Materials EngineeringUniversity of Macau Macao SAR 999078 China
| | - Shiming Zhang
- L. Sun, X. Xu, S. Song, Y. Zhang, Dr. C. Miao, Prof. X. Liu, Prof. S. ZhangKey Laboratory of Flexible Electronics & Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 P. R. China
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26
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Kokal RK, Raavi SSK, Deepa M. Quantum Dot Donor-Polymer Acceptor Architecture for a FRET-Enabled Solar Cell. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18395-18403. [PMID: 31045337 DOI: 10.1021/acsami.9b01792] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Forster resonance energy-transfer (FRET)-based solution-processed solar cell is fabricated with cadmium sulfide (CdS) as the energy donor and poly[ N-9'-heptadecanyl-2,7-carbazole- alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) as the energy acceptor. Carbon dots (C-dots) deposited on carbon fabric are applied as a counter electrode. Although electron injection from CdS to PCDTBT is energetically disfavored, evidences for energy transfer between the two components of the cell are obtained in terms of FRET parameters with the relative quantum yield of donor CdS quantum dots (QDs) being ∼0.3, a Forster radius of ∼3.7 nm, and an energy-transfer efficiency of ∼55%. Power conversion efficiency (PCE) of the TiO2/PCDTBT cell without the donor is 0.23% and when coupled with donor CdS QDs, the ensuing TiO2/PCDTBT/CdS cell experiences a 23 time increment in PCE, reaching 5.3%. The complete FRET cell: TiO2/PCDTBT/CdS/ZnS-S2--C-dots/C-fabric produces a PCE of 7.42%, under 1 sun illumination. External quantum efficiency studies reveal an enhanced spectral response spanning from 300 to 670 nm, with 300 and 175% increases attained for the FRET-enabled TiO2/PCDTBT/CdS/ZnS photoanode compared with the TiO2/PCDTBT photoanode over the blue and green-red portions of the solar spectrum.
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Genene Z, Mammo W, Wang E, Andersson MR. Recent Advances in n-Type Polymers for All-Polymer Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1807275. [PMID: 30790384 DOI: 10.1002/adma.201807275] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/14/2019] [Indexed: 06/09/2023]
Abstract
All-polymer solar cells (all-PSCs) based on n- and p-type polymers have emerged as promising alternatives to fullerene-based solar cells due to their unique advantages such as good chemical and electronic adjustability, and better thermal and photochemical stabilities. Rapid advances have been made in the development of n-type polymers consisting of various electron acceptor units for all-PSCs. So far, more than 200 n-type polymer acceptors have been reported. In the last seven years, the power conversion efficiency (PCE) of all-PSCs rapidly increased and has now surpassed 10%, meaning they are approaching the performance of state-of-the-art solar cells using fullerene derivatives as acceptors. This review discusses the design criteria, synthesis, and structure-property relationships of n-type polymers that have been used in all-PSCs. Additionally, it highlights the recent progress toward photovoltaic performance enhancement of binary, ternary, and tandem all-PSCs. Finally, the challenges and prospects for further development of all-PSCs are briefly considered.
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Affiliation(s)
- Zewdneh Genene
- Department of Chemistry, Ambo University, P. O. Box 19, Ambo, Ethiopia
| | - Wendimagegn Mammo
- Department of Chemistry, Addis Ababa University, P.O Box 33658, Addis Ababa, Ethiopia
| | - Ergang Wang
- Department of Chemistry and Chemical Engineering/Applied Chemistry, Chalmers University of Technology, SE 412 96, Gothenburg, Sweden
| | - Mats R Andersson
- Flinders Institute for Nanoscale Science and Technology, Flinders University, Sturt Road, Bedford Park, Adelaide, SA, 5042, Australia
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Díez-Pascual AM. Nanoparticle Reinforced Polymers. Polymers (Basel) 2019; 11:polym11040625. [PMID: 30960608 PMCID: PMC6523703 DOI: 10.3390/polym11040625] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Accepted: 04/01/2019] [Indexed: 01/14/2023] Open
Affiliation(s)
- Ana María Díez-Pascual
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Faculty of Sciences, Institute of Chemistry Research "Andrés M. del Río" (IQAR), University of Alcalá, Ctra. Madrid-Barcelona, Km. 33.6, 28871 Madrid, Spain.
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Cui Y, Yao H, Hong L, Zhang T, Xu Y, Xian K, Gao B, Qin J, Zhang J, Wei Z, Hou J. Achieving Over 15% Efficiency in Organic Photovoltaic Cells via Copolymer Design. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1808356. [PMID: 30779391 DOI: 10.1002/adma.201808356] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/26/2019] [Indexed: 06/09/2023]
Abstract
Ternary blending and copolymerization strategies have proven advantageous in boosting the photovoltaic performance of organic solar cells. Here, 15% efficiency solar cells using copolymerization donors are demonstrated, where the electron-withdrawing unit, ester-substituted thiophene, is incorporated into a PBDB-TF polymer to downshift the molecular energy and broaden the absorption. Copolymer-based solar cells suitable for large-area devices can be fabricated by a blade-coating method from a nonhalogen and nonaromatic solvent mixture. Although ternary solar cells can achieve comparable efficiencies, they are not suitable for environment-friendly processing conditions and show relatively low photostability compared to copolymer-based devices. These results not only demonstrate high-efficiency organic photovoltaic cells via copolymerization strategies but also provide important insights into their applications in practical production.
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Affiliation(s)
- Yong Cui
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemistry and Chemical Engineering, University of Chinses Academy of Sciences, Beijing, 100049, P. R. China
| | - Huifeng Yao
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Ling Hong
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemistry and Chemical Engineering, University of Chinses Academy of Sciences, Beijing, 100049, P. R. China
| | - Tao Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Ye Xu
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemistry and Chemical Engineering, University of Chinses Academy of Sciences, Beijing, 100049, P. R. China
| | - Kaihu Xian
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemistry and Chemical Engineering, University of Chinses Academy of Sciences, Beijing, 100049, P. R. China
| | - Bowei Gao
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemistry and Chemical Engineering, University of Chinses Academy of Sciences, Beijing, 100049, P. R. China
| | - Jinzhao Qin
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemistry and Chemical Engineering, University of Chinses Academy of Sciences, Beijing, 100049, P. R. China
| | - Jianqi Zhang
- Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Zhixiang Wei
- Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Jianhui Hou
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Chemistry and Chemical Engineering, University of Chinses Academy of Sciences, Beijing, 100049, P. R. China
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30
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Huang S, Yu A, Wang Y, Tang Y, Shen S, Kang B, Silva SRP, Lu G. Nickel oxide and polytetrafluoroethylene stacked structure as an interfacial layer for efficient polymer solar cells. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Huang S, Pang Y, Li X, Wang Y, Yu A, Tang Y, Kang B, Silva SRP, Lu G. Strontium Fluoride and Zinc Oxide Stacked Structure as an Interlayer in High-Performance Inverted Polymer Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:2149-2158. [PMID: 30582327 DOI: 10.1021/acsami.8b18963] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Enhanced power conversion efficiency is reported in inverted polymer solar cells when an ultrathin layer of strontium fluoride (SrF2) is evaporated on the surface of the solution-processed zinc oxide (ZnO) electron transport layer. The photoactive layer is made up of bulk heterojunction composites of poly[4,8-bis(5(2-ethylhexyl)thiophen-2-yl)benzo[1,2- b:4,5- b']dithiopheneco-3-fluorothieno[3,4- b]-thiophene-2-carboxylate] and [6,6]-phenyl-C71-butyric acid methyl ester. The ZnO film acts as an effective electron transport layer, whereas the ultrathin SrF2 layer improves the energy level alignment and enhances the built-in potential via the formation of an interfacial dipole layer at the interfaces between the ZnO film and the photoactive layer, resulting in an enhanced electron extraction efficiency and a decreased carrier recombination loss. Furthermore, the SrF2 layer reduces the inherent incompatibility between the hydrophilic ZnO film and the hydrophobic photoactive layer. As a result, all the photovoltaic performance parameters are remarkably improved, leading to a high efficiency of up to 10.46% (with a fill factor of 71.38%), corresponding to a ca. 21% improvement over the reference device performance (8.64%). The use of a ZnO/SrF2 stacked interlayer provides a simple, but effective, approach to obtain high-efficiency inverted PSCs.
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Affiliation(s)
- Shuai Huang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - Yu Pang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - Xu Li
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - Yunhe Wang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - Ancan Yu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - Yuting Tang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - Bonan Kang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
| | - S Ravi P Silva
- Nanoelectronics Centre, Advanced Technology Institute , University of Surrey , Guildford , Surrey GU2 7XH , United Kingdom
| | - Geyu Lu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering , Jilin University , 2699 Qianjin Street , Changchun 130012 , China
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Li CH, Chang CC, Hsiao YH, Peng SH, Su YJ, Heo SW, Tajima K, Tsai MC, Lin CY, Hsu CS. Porphyrin-Containing Polymer as a Superior Blue Light-Absorbing Additive To Afford High- J sc Ternary Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1156-1162. [PMID: 30525404 DOI: 10.1021/acsami.8b19060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Integrating an additional component featuring complementary light absorption into binary polymer solar cells is a superior tactic to ameliorate solar cell efficiency and stability. An appropriate additive not only extends the absorption range but may also facilitate charge separation and transport processes. In this work, we elucidate the effects of incorporating a porphyrin-containing conjugated polymer (PPor-1), which displays absorption in 350-500 nm, into binary PTB7-Th:4TIC and PTB7-Th:ITIC blends, affording devices with an average power conversion efficiency approaching 9%. We successfully demonstrate that PPor-1 can be incorporated as an additive to impart improved Jsc (up to 19.1 mA cm-2).
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Affiliation(s)
| | | | | | | | | | - Soo-Won Heo
- RIKEN Center for Emergent Matter Science (CEMS) , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Keisuke Tajima
- RIKEN Center for Emergent Matter Science (CEMS) , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Ming-Chi Tsai
- Department of Applied Chemistry , National Chi Nan University , 302 University Rd. , Puli, Nantou 54561 , Taiwan
| | - Ching-Yao Lin
- Department of Applied Chemistry , National Chi Nan University , 302 University Rd. , Puli, Nantou 54561 , Taiwan
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Xiao M, Zhang K, Dong S, Yin Q, Liu Z, Liu L, Huang F, Cao Y. High-Performance Ternary Nonfullerene Polymer Solar Cells with Both Improved Photon Harvesting and Device Stability. ACS APPLIED MATERIALS & INTERFACES 2018; 10:25594-25603. [PMID: 29992809 DOI: 10.1021/acsami.8b06822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Efficiency and stability of polymer solar cells (PSCs) are the two most significant decisive factors for the purpose of actual applications. Here, highly efficient and stable ternary PSCs were fabricated by incorporating two well-compatible polymer donors (poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2- b;4,5- b0]dithiophene-2,6-diyl- alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4- b]thiophene-)-2-carboxylate-2-6-diyl] and poly[[9-(1-octylnonyl)-9 H-carbazole-2,7-diyl]-2,5-thiophenediyl-2,1,3-benzothiadiazole-4,7-diyl-2,5-thiophenediyl]) with one narrow band gap nonfullerene acceptor (3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone)-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3- d:2',3'- d']- s-indaceno[1,2- b:5,6- b']dithiophene)). It is found that Förster resonance energy transfer acts as an efficient pathway to further strengthen photon harvesting in this ternary system, which results in a significant improvement in current density ( JSC) without sacrificing the strong absorption of binary blends in the near-infrared region. Meanwhile, both of the inverted and conventional ternary PSCs exhibit better stability compared with the related binary PSCs in air condition because of the interlocked morphology in ternary films. The optimized ternary PSCs exhibit an outstanding power conversion efficiency (PCE) of 9.53% resulting from the synchronous improvements in JSC and fill factor. Moreover, this ternary strategy can be further confirmed by the use of an ultranarrow-band gap nonfullerene acceptor IEICO-4F, and the champion PCE of ternary PSCs reaches to 12.15%.
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Affiliation(s)
- Manjun Xiao
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, and School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Kai Zhang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, and School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Sheng Dong
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, and School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Qingwu Yin
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, and School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Zixian Liu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, and School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Liqian Liu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, and School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Fei Huang
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, and School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
| | - Yong Cao
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, and School of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , China
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Zhan L, Li S, Zhang H, Gao F, Lau T, Lu X, Sun D, Wang P, Shi M, Li C, Chen H. A Near-Infrared Photoactive Morphology Modifier Leads to Significant Current Improvement and Energy Loss Mitigation for Ternary Organic Solar Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800755. [PMID: 30128263 PMCID: PMC6097004 DOI: 10.1002/advs.201800755] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Indexed: 05/28/2023]
Abstract
Herein, efficient organic solar cells (OSCs) are realized with the ternary blend of a medium band gap donor (poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)-benzo[1,2-b:4,5-b']dithiophene))-alt-(5,5-(1',3'-di-2-thienyl-5',7'-bis(2-ethylhexyl)benzo[1',2'-c:4',5'-c']dithiophene-4,8-dione)] (PBDB-T)) with a low band gap acceptor (2,2'-((2Z,2'Z)-(((2,5-difluoro-1,4-phenylene)bis(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b']dithiophene-6,2-diyl))bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (HF-PCIC)) and a near-infrared acceptor (2,2'-((2Z,2'Z)-(((4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-2,7-diyl)bis(4-((2-ethylhexyl)oxy)thiophene-5,2-diyl))bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (IEICO-4F)). It is shown that the introduction of IEICO-4F third component into PBDB-T:HF-PCIC blend increases the short-circuit current density (Jsc) of the ternary OSC to 23.46 mA cm-2, with a 44% increment over those of binary devices. The significant current improvement originates from the broadened absorption range and the active layer morphology optimization through the introduction of IEICO-4F component. Furthermore, the energy loss of the ternary cells (0.59 eV) is much decreased over that of the binary cells (0.80 eV) due to the reduction of both radiative recombination from the absorption below the band gap and nonradiative recombination upon the addition of IEICO-4F. Therefore, the power conversion efficiency increases dramatically from 8.82% for the binary cells to 11.20% for the ternary cells. This work provides good examples for simultaneously achieving both significant current enhancement and energy loss mitigation in OSCs, which would lead to the further construction of highly efficient ternary OSCs.
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Affiliation(s)
- Lingling Zhan
- State Key Laboratory of Silicon MaterialsMOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou310027P. R. China
| | - Shuixing Li
- State Key Laboratory of Silicon MaterialsMOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou310027P. R. China
| | - Huotian Zhang
- Biomolecular and Organic ElectronicsIFMLinköping UniversityLinköping58183Sweden
| | - Feng Gao
- Biomolecular and Organic ElectronicsIFMLinköping UniversityLinköping58183Sweden
| | - Tsz‐Ki Lau
- Department of PhysicsChinese University of Hong KongNew TerritoriesHong KongP. R. China
| | - Xinhui Lu
- Department of PhysicsChinese University of Hong KongNew TerritoriesHong KongP. R. China
| | - Danyang Sun
- Department of ChemistryZhejiang UniversityHangzhou310027P. R. China
| | - Peng Wang
- Department of ChemistryZhejiang UniversityHangzhou310027P. R. China
| | - Minmin Shi
- State Key Laboratory of Silicon MaterialsMOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou310027P. R. China
| | - Chang‐Zhi Li
- State Key Laboratory of Silicon MaterialsMOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou310027P. R. China
| | - Hongzheng Chen
- State Key Laboratory of Silicon MaterialsMOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou310027P. R. China
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Al-Asbahi BA. Influence of SiO₂/TiO₂ Nanocomposite on the Optoelectronic Properties of PFO/MEH-PPV-Based OLED Devices. Polymers (Basel) 2018; 10:E800. [PMID: 30960725 PMCID: PMC6403628 DOI: 10.3390/polym10070800] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 07/16/2018] [Accepted: 07/18/2018] [Indexed: 11/16/2022] Open
Abstract
The influence of SiO₂/TiO₂ nanocomposites on the performance of organic light-emitting diodes (OLEDs) based on poly(9,9'-di-n-octylfluorenyl-2,7-diyl) (PFO) and various amounts of poly(2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene-vinylene) (MEH-PPV) was investigated. Prior to the fabrication of the OLEDs on indium-tin oxide (ITO) substrates, the hybrids of PFO/MEH-PPV, in the presence and absence of the SiO₂/TiO₂ nanocomposites, were prepared via the solution blending technique. Improvement of the performances of the devices in the presence of the SiO₂/TiO₂ nanocomposites was detected. The existence of the SiO₂/TiO₂ nanocomposites led to better charge carrier injection and, thus, a significant reduction in the turn-on voltage of the devices. The enhancement of MEH-PPV electroluminescence peaks in the hybrids in the presence of SiO₂/TiO₂ nanocomposites is not only a result of the Förster resonance energy transfer, but also of hole-electron recombination, which is of greater significance. Moreover, the existence of the SiO₂/TiO₂ nanocomposites led to a shift of the CIE chromaticity coordinates of the devices.
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Affiliation(s)
- Bandar Ali Al-Asbahi
- Department of Physics & Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
- Research Chair in Laser Diagnosis of Cancers, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
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36
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Zheng DW, Hong S, Xu L, Li CX, Li K, Cheng SX, Zhang XZ. Hierarchical Micro-/Nanostructures from Human Hair for Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1800836. [PMID: 29782675 DOI: 10.1002/adma.201800836] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/20/2018] [Indexed: 05/15/2023]
Abstract
With the prominent progress of biomedical engineering, materials with high biocompatibility and versatile functions are urgently needed. So far, hierarchical structures in nature have shed some light on the design of high performance materials both in concept and implementation. Inspired by these, the hierarchical micro-/nanostructures of human hair are explored and human hair is further broken into hierarchical microparticles (HMP) and hierarchical nanoparticles (HNP) with top-down procedures. Compared with commercialized carriers, such as liposomes or albumin nanoparticles, the obtained particles exhibit high hemocompatibility and negligible immunogenicity. Furthermore, these materials also display attentional abilities in the aspects of light absorption and free radical scavenging. It is found that HMP and HNP can prevent skin from UV-induced damage and relieve symptoms of cataract in vitro. Besides, both HMP and HNP show satisfactory photothermal conversion ability. By using microcomputed tomography and intravital fluorescence microscopy, it is found that warfarin-loaded HMP can rescue mice from vein thrombosis. In another aspect, HNP modified with tumor targeted aptamers exhibit dramatic antineoplastic effect, and suppress 96.8% of tumor growth in vivo. Thus, the multifaceted materials described here might provide a new tool for addressing biomedical challenges.
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Affiliation(s)
- Di-Wei Zheng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Sheng Hong
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Lu Xu
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Chu-Xin Li
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Ke Li
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Si-Xue Cheng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
| | - Xian-Zheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, 430072, P. R. China
- The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, P. R. China
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37
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Manipulating active layer morphology of molecular donor/polymer acceptor based organic solar cells through ternary blends. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9249-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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38
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Gopi A, Sajitha M, Haridas R, Varghese L, Yoosaf K. Cooperative and FRET-Assisted Brightness Enhancement in Oligo(phenylene ethynylene): Quantum Dot Organic-Inorganic Nanohybrids. Chem Asian J 2018; 13:1492-1499. [PMID: 29573188 DOI: 10.1002/asia.201800328] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Indexed: 12/27/2022]
Abstract
Herein, we combine the ideas of concerted emission from fluorophore ensembles and its further amplification through FRET in an organic-inorganic hybrid approach. Spherical and highly fluorescent organic nanoparticles (FONPs, Φf =0.38), prepared by the self-assembly of oligo(phenylene ethynylene) (OPE) molecules, were selected as a potential donor material. This organic core was then decorated with a shell of fluorescent CdSe/ZnS core-shell quantum dots (QDs; <d>≅5.5 nm, Φf =0.27) with the aid of a bifunctional ligand, mercaptopropionic acid. Its high extinction coefficient (ϵ≈4.1×105 m-1 cm-1 ) and good spectral match with the emission of the FONPs (J(λ)≈4.08×1016 m-1 cm-1 nm4 ) made them a better acceptor candidate to constitute an efficient FRET pair (ΦFRET =0.8). As a result, the QD fluorescence intensity was enhanced by more than twofold. The fundamental calculations carried out indicated an improvement in all the FRET parameters as the number of QDs around the FONPs was increased. This, together with the localization of multiple QDs in a nanometric dimension (volume≈1.8×106 nm3 ), gave highly bright reddish luminescent hybrid particles as visualized under a fluorescence microscope.
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Affiliation(s)
- Arun Gopi
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-NIIST Campus, Thiruvananthapuram, 695019, Kerala, India
| | - Manikantan Sajitha
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-NIIST Campus, Thiruvananthapuram, 695019, Kerala, India
| | - Reethu Haridas
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-NIIST Campus, Thiruvananthapuram, 695019, Kerala, India
| | - Listo Varghese
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, 695019, Kerala, India
| | - Karuvath Yoosaf
- Photosciences and Photonics Section, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-NIIST Campus, Thiruvananthapuram, 695019, Kerala, India
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39
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Zhang D, Liu C, Li K, Chen Y, Ruan S, Zhang X, Li C. Facilitated extrinsic majority carrier depletion and photogenerated exciton dissociation in an annealing-free ZnO:C photodetector. NANOSCALE 2018; 10:6459-6466. [PMID: 29565440 DOI: 10.1039/c8nr00214b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Applications of ZnO in photodetectors are limited by the great quantity of extrinsic majority carriers due to structural defects and difficult exciton dissociation due to the large exciton binding energy; these generally lead to a higher dark current (Id) and lower light current (Il), severely degrading the responsivity and detectivity. C dots are incorporated into an annealing-free ZnO layer to innovatively construct a local built-in electric field (Ebi) using the difference in the work functions; this simultaneously overcomes the drawbacks of the pristine ZnO photosensitive layer. In dark, the extrinsic majority carrier of ZnO is depleted around the incorporated C dots due to the self-depleting effect; thus, the Id decreases. Under UV illumination, the photogenerated exciton driven by the local Ebi is easily dissociated into a free charge carrier, contributing to the improved Il. This study paves a universal way to effectively improve the detection characteristics of photoconductive devices by incorporating the local Ebi.
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Affiliation(s)
- Dezhong Zhang
- State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun 130012, P. R. China.
| | - Chunyu Liu
- State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun 130012, P. R. China.
| | - Kanzhe Li
- College of Electronic Science & Engineering, Jilin University, Changchun 130012, P. R. China
| | - Yu Chen
- College of Electronic Science & Engineering, Jilin University, Changchun 130012, P. R. China
| | - Shengping Ruan
- State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun 130012, P. R. China.
| | - Xindong Zhang
- College of Electronic Science & Engineering, Jilin University, Changchun 130012, P. R. China
| | - Chuannan Li
- College of Electronic Science & Engineering, Jilin University, Changchun 130012, P. R. China
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40
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Gautam BR, Younts R, Carpenter J, Ade H, Gundogdu K. The Role of FRET in Non-Fullerene Organic Solar Cells: Implications for Molecular Design. J Phys Chem A 2018; 122:3764-3771. [DOI: 10.1021/acs.jpca.7b12807] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bhoj R. Gautam
- Department of Physics and Organic and Carbon Electronics Laboratory, North Carolina State University, Raleigh, North Carolina 27695, United States
- Department of Chemistry and Physics, Fayetteville State University, Fayetteville, North Carolina 28301, United States
| | - Robert Younts
- Department of Physics and Organic and Carbon Electronics Laboratory, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Joshua Carpenter
- Department of Physics and Organic and Carbon Electronics Laboratory, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Harald Ade
- Department of Physics and Organic and Carbon Electronics Laboratory, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Kenan Gundogdu
- Department of Physics and Organic and Carbon Electronics Laboratory, North Carolina State University, Raleigh, North Carolina 27695, United States
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41
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Jiang W, Yu R, Liu Z, Peng R, Mi D, Hong L, Wei Q, Hou J, Kuang Y, Ge Z. Ternary Nonfullerene Polymer Solar Cells with 12.16% Efficiency by Introducing One Acceptor with Cascading Energy Level and Complementary Absorption. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30. [PMID: 29125654 DOI: 10.1002/adma.201703005] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 09/13/2017] [Indexed: 05/13/2023]
Abstract
A novel small-molecule acceptor, (2,2'-((5E,5'E)-5,5'-((5,5'-(4,4,9,9-tetrakis(5-hexylthiophen-2-yl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-2,7-diyl)bis(4-(2-ethylhexyl)thiophene-5,2-diyl))bis(methanylylidene)) bis(3-hexyl-4-oxothiazolidine-5,2-diylidene))dimalononitrile (ITCN), end-capped with electron-deficient 2-(3-hexyl-4-oxothiazolidin-2-ylidene)malononitrile groups, is designed, synthesized, and used as the third component in fullerene-free ternary polymer solar cells (PSCs). The cascaded energy-level structure enabled by the newly designed acceptor is beneficial to the carrier transport and separation. Meanwhile, the three materials show a complementary absorption in the visible region, resulting in efficient light harvesting. Hence, the PBDB-T:ITCN:IT-M ternary PSCs possess a high short-circuit current density (Jsc ) under an optimal weight ratio of donors and acceptors. Moreover, the open-circuit voltage (Voc ) of the ternary PSCs is enhanced with an increase of the third acceptor ITCN content, which is attributed to the higher lowest unoccupied molecular orbital energy level of ITCN than that of IT-M, thus exhibits a higher Voc in PBDB-T:ITCN binary system. Ultimately, the ternary PSCs achieve a power conversion efficiency of 12.16%, which is higher than the PBDB-T:ITM-based PSCs (10.89%) and PBDB-T:ITCN-based ones (2.21%). This work provides an effective strategy to improve the photovoltaic performance of PSCs.
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Affiliation(s)
- Weigang Jiang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
| | - Runnan Yu
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhiyang Liu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
| | - Ruixiang Peng
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
| | - Dongbo Mi
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
| | - Ling Hong
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
| | - Qiang Wei
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
| | - Jianhui Hou
- Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yongbo Kuang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
| | - Ziyi Ge
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China
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42
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Xu X, Bi Z, Ma W, Wang Z, Choy WCH, Wu W, Zhang G, Li Y, Peng Q. Highly Efficient Ternary-Blend Polymer Solar Cells Enabled by a Nonfullerene Acceptor and Two Polymer Donors with a Broad Composition Tolerance. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29. [PMID: 29044740 DOI: 10.1002/adma.201704271] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 08/26/2017] [Indexed: 05/16/2023]
Abstract
In this work, highly efficient ternary-blend organic solar cells (TB-OSCs) are reported based on a low-bandgap copolymer of PTB7-Th, a medium-bandgap copolymer of PBDB-T, and a wide-bandgap small molecule of SFBRCN. The ternary-blend layer exhibits a good complementary absorption in the range of 300-800 nm, in which PTB7-Th and PBDB-T have excellent miscibility with each other and a desirable phase separation with SFBRCN. In such devices, there exist multiple energy transfer pathways from PBDB-T to PTB7-Th, and from SFBRCN to the above two polymer donors. The hole-back transfer from PTB7-Th to PBDB-T and multiple electron transfers between the acceptor and the donor materials are also observed for elevating the whole device performance. After systematically optimizing the weight ratio of PBDB-T:PTB7-Th:SFBRCN, a champion power conversion efficiency (PCE) of 12.27% is finally achieved with an open-circuit voltage (Voc ) of 0.93 V, a short-circuit current density (Jsc ) of 17.86 mA cm-2 , and a fill factor of 73.9%, which is the highest value for the ternary OSCs reported so far. Importantly, the TB-OSCs exhibit a broad composition tolerance with a high PCE over 10% throughout the whole blend ratios.
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Affiliation(s)
- Xiaopeng Xu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610064, P. R. China
| | - Zhaozhao Bi
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Wei Ma
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Zishuai Wang
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong 999077, P. R. China
| | - Wallace C H Choy
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong 999077, P. R. China
| | - Wenlin Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610064, P. R. China
| | - Guangjun Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610064, P. R. China
| | - Ying Li
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610064, P. R. China
| | - Qiang Peng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610064, P. R. China
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43
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Cai X, Yuan T, Liu X, Tu G. Self-Assembly of 1-Pyrenemethanol on ZnO Surface toward Combined Cathode Buffer Layers for Inverted Polymer Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:36082-36089. [PMID: 28967247 DOI: 10.1021/acsami.7b10399] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Solid alcohol 1-pyrenemethanol (PyM) was first introduced to modify the zinc oxide (ZnO) layer which is used in the inverted polymer solar cells (PSCs) as a cathode buffer layer (CBL). As a low-cost industrial product, the PyM can modify the surface defects and improve the electron mobility of ZnO CBL, which can be attributed to the self-assembly of PyM on the ZnO surface due to the hydrogen bonds and the conjugated structure in PyM. With a blend of PTB7:PC71BM as active layer, the device with ZnO/PyM CBL exhibited a notable power conversion efficiency (PCE) of 8.26%, which is better than that of control devices based on bare ZnO CBL (7.26%). With the addition of PyM, the device based on PTB7-Th:PC71BM showed a higher PCE of 9.10%, an obvious improvement from the 7.79% of control devices. There was no obvious change in device performance with the increase of PyM solution concentration, indicating that the device fabrications are thickness-insensitive. These results could be particularly useful in solution processing of buffer layer materials to high-efficiency organic solar cells.
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Affiliation(s)
- Xiang Cai
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, PR China
| | - Tao Yuan
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, PR China
| | - Xiangfu Liu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, PR China
| | - Guoli Tu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, PR China
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44
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Sharma A, Chauhan M, Bharti V, Kumar M, Chand S, Tripathi B, Tiwari JP. Revealing the correlation between charge carrier recombination and extraction in an organic solar cell under varying illumination intensity. Phys Chem Chem Phys 2017; 19:26169-26178. [PMID: 28930319 DOI: 10.1039/c7cp05235a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The design and fabrication of better excitonic solar cells are the need of the hour for futuristic energy solutions. This designing needs a better understanding of the charge transport properties of excitonic solar cells. One of the popular methods of understanding the charge transport properties is the analysis of the J-V characteristics of a device through theoretical simulation at varied illumination intensity. Herein, a J-V characteristic of a polymer:fullerene based bulk heterojunction (BHJ) organic solar cells (OSCs) of structure ITO/PEDOT:PSS (∼40 nm)/PTB7:PC71BM (∼100 nm)/Al (∼120 nm) is analyzed using one- and two-diode models at varied illumination intensity in the range of 0.1-2.33 Sun. It was found that the double diode model is better with respect to the single diode model and can explain the J-V characteristics of the OSCs correctly. Further, the recombination mechanism is investigated thoroughly and it was observed that fill factor (FF) is in the range of 62.5%-41.4% for the corresponding values of the recombination-to-extraction ratio (θ) varying from 0.001 to 0.023. These findings are attributed to the change in charge transport mechanism from trap-assisted to bimolecular recombination with the variation of illumination intensity.
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Affiliation(s)
- Abhishek Sharma
- Advanced Materials and Devices Division, CSIR-National Physical Laboratory, New Delhi 110012, India.
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45
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Ahmad R, Srivastava R, Yadav S, Chand S, Sapra S. Functionalized 2D-MoS 2-Incorporated Polymer Ternary Solar Cells: Role of Nanosheet-Induced Long-Range Ordering of Polymer Chains on Charge Transport. ACS APPLIED MATERIALS & INTERFACES 2017; 9:34111-34121. [PMID: 28871775 DOI: 10.1021/acsami.7b08725] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this paper, we demonstrated the enhancement in power conversion efficiency (PCE) of solar cells based on poly(3-hexylthiophene-2,5-diyl) (P3HT)/[6,6]-phenyl C71 butyric acid methyl ester (PC71BM) by incorporation of functionalized 2D-MoS2 nanosheets (NSs) as an additional charge-transporting material. The enhancement in PCE of ternary solar cells arises due to the synergic enhancement in exciton dissociation and the improvement in mobility of both electrons and holes through the active layer of the solar cells. The improved hole mobility is attributed to the formation of the long-range ordered nanofibrillar structure of polymer phases and improved crystallinity in the presence of 2D-MoS2 NSs. The improved electron mobility arises due to the highly conducting 2D network of MoS2 NSs which provides additional electron transport channels within the active layer. The nanosheet-incorporated ternary blend solar cells exhibit 32% enhancement in PCE relative to the binary blend P3HT/PC71BM.
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Affiliation(s)
- Razi Ahmad
- Center for Organic Electronics, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory , Dr. K.S. Krishnan Road, New Delhi 110012, India
- Department of Chemistry, Indian Institute of Technology Delhi , New Delhi 110016, India
| | - Ritu Srivastava
- Center for Organic Electronics, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory , Dr. K.S. Krishnan Road, New Delhi 110012, India
| | - Sushma Yadav
- Department of Chemistry, Indian Institute of Technology Delhi , New Delhi 110016, India
| | - Suresh Chand
- Center for Organic Electronics, Physics of Energy Harvesting Division, CSIR-National Physical Laboratory , Dr. K.S. Krishnan Road, New Delhi 110012, India
| | - Sameer Sapra
- Department of Chemistry, Indian Institute of Technology Delhi , New Delhi 110016, India
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46
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Yang L, Gu W, Hong L, Mi Y, Liu F, Liu M, Yang Y, Sharma B, Liu X, Huang H. High Performing Ternary Solar Cells through Förster Resonance Energy Transfer between Nonfullerene Acceptors. ACS APPLIED MATERIALS & INTERFACES 2017; 9:26928-26936. [PMID: 28762728 DOI: 10.1021/acsami.7b08146] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nonradiative Förster resonance energy transfer (FRET) is an important mechanism of organic solar cells, which can improve the exciton migration over a long distance, resulting in improvement of efficiency of solar cells. However, the current observations of FRET are very limited, and the efficiencies are less than 9%. In this study, FRET effect was first observed between two nonfullerene acceptors in ternary solar cells, which improved both the absorption range and exciton harvesting, leading to the dramatic enhancement in the short circuit current and power conversion efficiency. Moreover, this strategy is proved to be a versatile platform for conjugated polymers with different bandgaps, resulting in a remarkable efficiency of 10.4%. These results demonstrated a novel method to enhance the efficiency of organic soar cells.
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Affiliation(s)
- Lei Yang
- College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 101408, P. R. China
| | - Wenxing Gu
- College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 101408, P. R. China
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences , Beijing 101408, P. R. China
| | - Ling Hong
- College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 101408, P. R. China
| | - Yang Mi
- Division of Nanophotonics, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Feng Liu
- Department of Physics and Astronomy, Shanghai Jiaotong University , Shanghai 200240, China
| | - Ming Liu
- College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 101408, P. R. China
| | - Yufei Yang
- College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 101408, P. R. China
| | - Bigyan Sharma
- College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 101408, P. R. China
| | - Xinfeng Liu
- Division of Nanophotonics, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Hui Huang
- College of Materials Science and Optoelectronic Technology & CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences , Beijing 101408, P. R. China
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47
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Yu R, Zhang S, Yao H, Guo B, Li S, Zhang H, Zhang M, Hou J. Two Well-Miscible Acceptors Work as One for Efficient Fullerene-Free Organic Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1700437. [PMID: 28466960 DOI: 10.1002/adma.201700437] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 03/04/2017] [Indexed: 06/07/2023]
Abstract
High-performance ternary organic solar cells are fabricated by using a wide-bandgap polymer donor (bithienyl-benzodithiophene-alt-fluorobenzotriazole copolymer, J52) and two well-miscible nonfullerene acceptors, methyl-modified nonfullerene acceptor (IT-M) and 2,2'-((2Z,2'Z)-((5,5'-(4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydros-indaceno[1,2-b:5,6-b']dithiophene-2,7-diyl)bis(4-((2-ethylhexyl)oxy)thiophene-5,2-diyl))bis(methanylylidene))bis(3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (IEICO). The two acceptors with complementary absorption spectra and similar lowest unoccupied molecular orbital levels show excellent compatibility in the blend due to their very similar chemical structures. Consequently, the obtained ternary organic solar cells (OSC) exhibits a high efficiency of 11.1%, with an enhanced short-circuit current density of 19.7 mA cm-2 and a fill factor of 0.668. In this ternary system, broadened absorption, similar output voltages, and compatible morphology are achieved simultaneously, demonstrating a promising strategy to further improve the performance of ternary OSCs.
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Affiliation(s)
- Runnan Yu
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shaoqing Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Huifeng Yao
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Bing Guo
- Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Sunsun Li
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hao Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Maojie Zhang
- Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Jianhui Hou
- State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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48
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Wang J, Peng J, Liu X, Liang Z. Efficient and Stable Ternary Organic Solar Cells Based on Two Planar Nonfullerene Acceptors with Tunable Crystallinity and Phase Miscibility. ACS APPLIED MATERIALS & INTERFACES 2017; 9:20704-20710. [PMID: 28570073 DOI: 10.1021/acsami.7b03757] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Planar perylene diimides (PDIs), when used as nonfullerene acceptors for organic photovoltaics, are constrained by their large π-aggregation in solid state. To tackle this issue, another planar nonfullerene acceptor 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone)-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2',3'-d']-s-indaceno[1,2-b:5,6-b']dithiophene (ITIC) with weak crystallinity and near-infrared light absorption is introduced into the PTB7-Th:PDI binary blend to fabricate efficient and stable ternary solar cells. We have finely tuned the PDI/ITIC weight ratio to investigate the influences of individual ITIC and PDI on the optical, electronic, and morphological properties of the PTB7-Th:ITIC:PDI ternary blend. Compared to the binary blend, complementary optical absorption is achieved in all ternary blends. More importantly, it is found that ITIC plays a critical role on largely suppressing the PDI aggregates in the PTB7-Th:PDI blend, while PDI aids to form an interpenetrating network morphology to facilitate charge transport in the PTB7-Th:ITIC blend. Consequently, when the PDI/ITIC ratio is 3:7 (w/w), the PTB7-Th:ITIC:PDI based inverted solar cells exhibit the highest power conversion efficiency of 8.64% due to their favorable out-of-plane π-π stacking, finest phase-separation morphology, and highest charge mobility. Remarkably, the optimal cells that are solution-processed in air show the promising efficiency of 7.09%, suggesting good ambient stability of such ternary solar cells.
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Affiliation(s)
- Jialin Wang
- Department of Materials Science, Fudan University , Shanghai 200433, China
| | - Jiajun Peng
- Department of Materials Science, Fudan University , Shanghai 200433, China
| | - Xiaoyu Liu
- Department of Materials Science, Fudan University , Shanghai 200433, China
| | - Ziqi Liang
- Department of Materials Science, Fudan University , Shanghai 200433, China
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49
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Cai Y, Huo L, Sun Y. Recent Advances in Wide-Bandgap Photovoltaic Polymers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605437. [PMID: 28370466 DOI: 10.1002/adma.201605437] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 01/17/2017] [Indexed: 06/07/2023]
Abstract
The past decade has witnessed significant advances in the field of organic solar cells (OSCs). Ongoing improvements in the power conversion efficiency of OSCs have been achieved, which were mainly attributed to the design and synthesis of novel conjugated polymers with different architectures and functional moieties. Among various conjugated polymers, the development of wide-bandgap (WBG) polymers has received less attention than that of low-bandgap and medium-bandgap polymers. Here, we briefly summarize recent advances in WBG polymers and their applications in organic photovoltaic (PV) devices, such as tandem, ternary, and non-fullerene solar cells. Addtionally, we also dissuss the application of high open-circuit voltage tandem solar cells in PV-driven electrochemical water dissociation. We mainly focus on the molecular design strategies, the structure-property correlations, and the photovoltaic performance of these WBG polymers. Finally, we extract empirical regularities and provide invigorating perspectives on the future development of WBG photovoltaic materials.
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Affiliation(s)
- Yunhao Cai
- Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing, 100191, P.R. China
| | - Lijun Huo
- Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing, 100191, P.R. China
| | - Yanming Sun
- Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing, 100191, P.R. China
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Liu C, Zhang D, Li Z, Zhang X, Guo W, Zhang L, Shen L, Ruan S, Long Y. Boosted Electron Transport and Enlarged Built-In Potential by Eliminating the Interface Barrier in Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8830-8837. [PMID: 28233487 DOI: 10.1021/acsami.6b15631] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A smart interface modification strategy was employed to simultaneously improve short-circuit current density (Jsc) and open-circuit voltage (Voc) by incorporating a poly[(9,9-bis(3'-(N,N-dimethylamion)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctyl)-fluorene] (PFN) interlayer between a TiO2 film and an active layer, arising from the fact that PFN effectively eliminated the interface barrier between TiO2 and the fullerene acceptor. The work function (WF) of TiO2 was apparently reduced, which facilitated effective electron transfer from the active layer to the TiO2 electron transport layer (ETL) and suppressed charge carrier recombination between contact interfaces. Electron injection devices with and without a PFN interlayer were fabricated to prove the eliminated electron barrier, meanwhile photoluminescence (PL) and time-resolved transient photoluminescence (TRTPL) were measured to probe much easier electron transfer from [6,6]-phenyl C71-butyric acid methyl ester (PC71BM) acceptor to TiO2 ETL, contributing to enhanced Jsc. The shift in vacuum level altered the WF of PC71BM, which enlarged the internal electrical field at the donor/acceptor interface and built-in potential (Vbi) across the device. Dark current characteristics and Mott-Schottky measurements indicated the enhancement of Vbi, benefiting to increased Voc. Consequently, the champion power conversion efficiency for a device with a PFN interlayer of 0.50 mg/mL reached to 7.14%, which is much higher than the PCE of 5.76% for the control device.
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Affiliation(s)
- Chunyu Liu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Dezhong Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Zhiqi Li
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Xinyuan Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Wenbin Guo
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Liu Zhang
- College of Instrumentation & Electrical Engineering, Jilin University , 938 Ximinzhu Street, Changchun 130061, People's Republic of China
| | - Liang Shen
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Shengping Ruan
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University , 2699 Qianjin Street, Changchun 130012, People's Republic of China
| | - Yongbing Long
- School of Electronic Engineering, South China Agricultural University , Guangzhou, 510642, China
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