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Fo W, Xu GY, Dong H, Liu L, Li YW, Ding L. Highly Efficient Binary Solvent Additive‐Processed Organic Solar Cells by the Blade‐Coating Method. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wan‐Zhen Fo
- School of Electrical and Control Engineering Shaanxi University of Science and Technology Xian Shaanxi 710021 China
| | - Gui Ying Xu
- Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou Suzhou 215123 China
| | - Hao‐Jie Dong
- School of Electrical and Control Engineering Shaanxi University of Science and Technology Xian Shaanxi 710021 China
| | - Lin‐Na Liu
- School of Electrical and Control Engineering Shaanxi University of Science and Technology Xian Shaanxi 710021 China
| | - Yao Wen Li
- Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou Suzhou 215123 China
| | - Lei Ding
- School of Electrical and Control Engineering Shaanxi University of Science and Technology Xian Shaanxi 710021 China
- Jiangsu jitri org Optoelectronics Technology Co., Ltd Suzhou 215215 China
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2
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Wang X, Gao SJ, Han JF, Zhang YL, Zhang S, Qiao WQ, Wang ZY. Effect of 1,8-Diiodooctane Content on the Performance of P3HT:PC61BM Bulk Heterojunction Photodetectors. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2548-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Sousa KRDA, Benatto L, Wouk L, Roman LS, Koehler M. Effects of non-halogenated solvent on the main properties of a solution-processed polymeric thin film for photovoltaic applications: a computational study. Phys Chem Chem Phys 2020; 22:9693-9702. [PMID: 32329493 DOI: 10.1039/d0cp01303j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic photovoltaic (OPV) devices have reached high power conversion efficiencies, but they are usually processed using halogenated toxic solvents. Hence, before OPV devices can be mass-produced by industrial processing, it would be desirable to replace those solvents with eco-friendly ones. Theoretical tools may be then a powerful ally in the search for those new solvents. In order to better understand the mechanisms behind the interaction between solvent and polymer, classical molecular dynamics (MD) calculations were used to produce a thin film of poly(4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl) (PTB7-Th), processed using two different solvents. PTB7-Th is widely applied as a donor material in OPVs. The first solvent is ortho-dichlorobenzene (o-DCB), which is a highly toxic solvent widely used in lab-scale studies. The second solvent is ortho-methylanisole (o-MA), which is an eco-friendly solvent for organic photovoltaic (OPV) manufacturing. Here we use a solvent evaporation protocol to simulate the formation of the PTB7-Th film. We demonstrate that our theoretical MD calculations were able to capture some differences in the macroscopic properties of thin films formed by o-DCB or o-MA evaporation. We found that the interaction of the halogenated solvent with the polymer tends to break the bonds between the lateral thiophenediyl groups and the main chain. We show that those defects may create traps that can affect the charge transport and also can be responsible for a blue shift in the absorption spectrum. Using the Monte Carlo method, we also verified the influence of the resulting MD morphology on the mobility of holes. Our theoretical results showed good agreement with the experimental measurements and both demonstrate that o-MA can be used to make polymer thin films without any loss of key properties for the device performance. The findings here highlight the importance of theoretical results as a guide to the morphological optimization of green processed polymeric films.
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4
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Shin HJ, Sun C, Cho HW, Lee BR, Kim JY, Kwon S, Kim Y, Choi H. Synthesis of Alkoxyacene‐Based Random Copolymers and Binary Solvent Additive for High Efficiency Organic Photovoltaics. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hee Jeong Shin
- Department of ChemistryResearch Institute for Convergence of Basic Sciencesand Institute of Nano Science and TechnologyHanyang University 04763 Seoul South Korea
| | - Chung Sun
- Department of Chemistry and RINSGyeongsang National University Jinju 660–701 Republic of Korea
| | - Hye Won Cho
- Department of Energy EngineeringUlsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
| | - Bo Ram Lee
- Department of PhysicsPukyong National University45 Yongso‐roNam‐Gu Busan 48513 Republic of Korea
| | - Jin Young Kim
- Department of Energy EngineeringUlsan National Institute of Science and Technology (UNIST) Ulsan 44919 South Korea
| | - Soon‐Ki Kwon
- Department of Materials Engineering and Convergence Technology and ERIGyeongsang National University Jinju 660–701 Republic of Korea
| | - Yun‐Hi Kim
- Department of Chemistry and RINSGyeongsang National University Jinju 660–701 Republic of Korea
| | - Hyosung Choi
- Department of ChemistryResearch Institute for Convergence of Basic Sciencesand Institute of Nano Science and TechnologyHanyang University 04763 Seoul South Korea
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5
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Chen J, Bi Z, Xu X, Zhang Q, Yang S, Guo S, Yan H, You W, Ma W. Fine Optimization of Morphology Evolution Kinetics with Binary Additives for Efficient Non-Fullerene Organic Solar Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1801560. [PMID: 30937258 PMCID: PMC6425445 DOI: 10.1002/advs.201801560] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 12/08/2018] [Indexed: 05/29/2023]
Abstract
The power conversion efficiency of polymer solar cells (PSCs) is strongly affected by active layer morphology. Here, two solvent additives (ODT: octance-1,8-dithiol; DIO: 1,8-diiodooctane) are used to optimize the bulk heterojunction morphology of FTAZ:ITIC-Th based PSCs and ≈11% efficiency is obtained, which is 10% higher than the untreated device. Based on the morphological characterizations, the influence of binary solvent additives on manipulating molecular packing and phase separation of blend films is successfully revealed. More importantly, in situ grazing incidence wide-angle X-ray scattering characterization is adopted to explore the crucial role played by these two solvent additives at different stages of the film-forming process, that is, ODT influences the initial stage of the film-forming process, while DIO later establishes the ultimate photoactive film formation. Due to the impacts of two additives at different film processing stages, an optimal ratio of ODT:DIO (0.375%:0.125%) is obtained, which helps in realizing the optimized morphology.
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Affiliation(s)
- Jianya Chen
- State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong UniversityXi'an710049China
- School of ScienceMOE Key Laboratory for Non‐equilibrium Synthesis and Modulation of Condensed MatterXi'an Jiaotong UniversityXi'an710049China
| | - Zhaozhao Bi
- State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong UniversityXi'an710049China
| | - Xianbin Xu
- State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong UniversityXi'an710049China
| | - Qianqian Zhang
- Department of ChemistryUniversity of North Carolina at Chapel HillChapel HillNC27599USA
| | - Shengchun Yang
- State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong UniversityXi'an710049China
- School of ScienceMOE Key Laboratory for Non‐equilibrium Synthesis and Modulation of Condensed MatterXi'an Jiaotong UniversityXi'an710049China
| | - Shengwei Guo
- College of Materials Science and EngineeringNorth Minzu UniversityYinchuan750021China
| | - Hongping Yan
- SLAC National Accelerator LaboratoryMenlo ParkCA94025USA
| | - Wei You
- Department of ChemistryUniversity of North Carolina at Chapel HillChapel HillNC27599USA
| | - Wei Ma
- State Key Laboratory for Mechanical Behavior of MaterialsXi'an Jiaotong UniversityXi'an710049China
- State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou510640China
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6
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Amollo TA, Mola GT, Nyamori VO. Germanium quantum dot/nitrogen-doped graphene nanocomposite for high-performance bulk heterojunction solar cells. RSC Adv 2018; 8:21841-21849. [PMID: 35541730 PMCID: PMC9081098 DOI: 10.1039/c8ra04223c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 06/06/2018] [Indexed: 11/23/2022] Open
Abstract
This study presents the successful synthesis of a novel nanocomposite, namely a germanium quantum dot/nitrogen-doped graphene nanocomposite (GeQD/NGr), and its use in the modification of the photoactive medium of bulk heterojunction solar cells (BHJ-SCs). The nanocomposite was prepared in two sequential steps. Firstly, a reduced graphene oxide-germanium oxide nanocomposite (rGO-GeO2) was synthesized by microwave-assisted solvothermal reaction. The second step involved simultaneous N-doping of graphene and reduction of GeO2 to obtain the GeQD/NGr nanocomposite by thermal treatment. The nanocomposite consists of highly crystalline, spherical shaped GeQDs with a mean diameter of 4.4 nm affixed on the basal planes of NGr sheets. Poly-3-hexylthiophene (P3HT), (6-6)phenyl-C60-butyric acid methyl ester (PCBM) and GeQD/NGr were used as the photoactive layer blend in the fabrication of BHJ-SCs. Enhanced short-circuit current density (Jsc) and fill factor (FF) is derived from the incorporation of the GeQD/NGr nanocomposite in the active layer. The nanocomposite in the active layer blend serves to ensure effective charge separation and transportation to the respective electrodes. Consequently, an improvement of up to 183% in the power conversion efficiency is achieved in the BHJ-SCs by the GeQD/NGr modification. Germanium quantum dot/nitrogen-doped graphene, a novel nanocomposite, is successfully synthesized and utilized in the photoactive medium of organic solar cells.![]()
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Affiliation(s)
- Tabitha A. Amollo
- University of KwaZulu-Natal
- Westville Campus
- School of Chemistry and Physics
- Durban 4000
- South Africa
| | - Genene T. Mola
- University of KwaZulu-Natal
- Pietermaritzburg Campus
- School of Chemistry and Physics
- Scottsville
- South Africa
| | - Vincent O. Nyamori
- University of KwaZulu-Natal
- Westville Campus
- School of Chemistry and Physics
- Durban 4000
- South Africa
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7
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Polymer solar cells with improved power conversion efficiency using solvent mixtures. Chem Res Chin Univ 2017. [DOI: 10.1007/s40242-017-6266-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Keshtov ML, Kuklin SA, Khokhlov AR, Konstantinov IO, Nekrasova NV, Xie ZY, Sharma GD. Regular conjugated D–A copolymer containing two benzotriazole and benzothiadiazole acceptors and dithienosilole donor units for photovoltaic application. RSC Adv 2017. [DOI: 10.1039/c7ra08522b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesized a D–A copolymer with low bandgap of 1.53 eV, and used as donor for PSCs. The over PCE of the PSC is reached 8.91% with a low voltage loss of 0.59 eV.
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Affiliation(s)
- M. L. Keshtov
- Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - S. A. Kuklin
- Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - A. R. Khokhlov
- Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - I. O. Konstantinov
- Institute of Organoelement Compounds of the Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - N. V. Nekrasova
- Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences
- Moscow
- Russian Federation
| | - Zhi-yuan Xie
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Ganesh D. Sharma
- Department of Physics
- The LNM Institute for Information Technology
- Jaipur
- India
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9
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Mola GT, Oseni SO, Kaviyarasu K, Maaza M. Co-solvent additives influence on the performance of PTB7:PCBM based Thin film organic solar cell. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.matpr.2017.10.061] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Jung YS, Yeo JS, Kim NK, Lee S, Kim DY. Selective Morphology Control of Bulk Heterojunction in Polymer Solar Cells Using Binary Processing Additives. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30372-30378. [PMID: 27760295 DOI: 10.1021/acsami.6b10715] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report the effect of binary additives on the fabrication of polymer solar cells (PSCs) based on a bulk heterojunction (BHJ) system. The combination of 1,8-diiodooctane (DIO), a high-boiling and selective solvent, for fullerene derivatives and poly(dimethylsiloxane) (PDMS) precursor, a nonvolatile insulating additive, affords complementary functions on the effective modulation of BHJ morphology. It was found that DIO and PDMS precursor each play different roles in the control of BHJ morphology, and thus, the power conversion efficiency (PCE) can be further enhanced to 7.6% by improving the fill factor (FF) from 6.8% compared to that achieved using a conventional device employing only a DIO additive. In the BHJ of the active layer, DIO suppressed the large phase separation of PBDTTT-CF and PC71BM while allowing the formation of continuous polymer networks in the donor polymer through phase separation of the PDMS precursor and BHJ components. The appropriate amount of PDMS precursor does not disturb charge transport in the BHJ despite having insulating properties. In addition, the dependence of photovoltaic parameters on different light intensities reveals that the charge recombination in the device with DIO and PDMS precursor decreases compared to that achieved using the device with only DIO.
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Affiliation(s)
- Yen-Sook Jung
- School of Materials Science and Engineering, Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology (GIST) , 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Jun-Seok Yeo
- Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST) , Wanju-gun, Jeollabuk-do 55324, Korea
| | - Nam-Koo Kim
- Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology (GIST) , 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Sehyun Lee
- School of Materials Science and Engineering, Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology (GIST) , 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Dong-Yu Kim
- School of Materials Science and Engineering, Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology (GIST) , 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea
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Zhao J, Zhao S, Xu Z, Qiao B, Huang D, Zhao L, Li Y, Zhu Y, Wang P. Revealing the Effect of Additives with Different Solubility on the Morphology and the Donor Crystalline Structures of Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:18231-18237. [PMID: 27328855 DOI: 10.1021/acsami.6b02671] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The impact of two kinds of additives, such as 1,8-octanedithiol (ODT), 1,8-diiodooctane (DIO), diphenylether (DPE), and 1-chloronaphthalene (CN), on the performance of poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3‴-di(2-octyldodecyl)2,2';5',2″;5″,2‴-quaterthiophen-5,5‴-diyl)] (PffBT4T-2OD):[6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) based polymer solar cell are investigated. The polymer solar cells (PSCs) of PffBT4T-2OD:PC71BM by using CN show a more improved PCE of 10.23%. The solubility difference of PffBT4T-2OD in DIO and CN creates the fine transformation in phase separation and favorable nanoscale morphology. Grazing incidence X-ray diffraction (GIXRD) data clearly shows molecular stacking and orientation of the active layer. Interestingly, DIO and CN have different functions on the effect of the molecular orientation. These interesting studies provide important guidance to optimize and control complicated molecular orientations and nanoscale morphology of PffBT4T-2OD based thick films for the application in PSCs.
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Affiliation(s)
- Jiao Zhao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing 100044, China
| | - Suling Zhao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing 100044, China
| | - Zheng Xu
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing 100044, China
| | - Bo Qiao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing 100044, China
| | - Di Huang
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing 100044, China
| | - Ling Zhao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing 100044, China
| | - Yang Li
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing 100044, China
| | - Youqin Zhu
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing 100044, China
| | - Peng Wang
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing 100044, China
- Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing 100044, China
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Abstract
The advance in lifestyle, modern industrialization and future technological revolution are always at high expense of energy consumption. Unfortunately, there exist serious issues such as limited storage, high cost and toxic contamination in conventional fossil fuel energy sources. Instead, solar energy represents a renewable, economic and green alternative in the future energy market. Among the photovoltaic technologies, organic photovoltaics (OPVs) demonstrate a cheap, flexible, clean and easy-processing way to convert solar energy into electricity. However, OPVs with a conventional device structure are still far away from industrialization mainly because of their short lifetime and the energy-intensive deposition of top metal electrode. To address the stability and cost issue simultaneously, an inverted device structure has been introduced into OPVs, bridging laboratory research with practical application. In this review, recent progress in device structures, working mechanisms, functions and advances of each component layer as well their correlations with the efficiency and stability of inverted OPVs are reviewed and illustrated.
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Affiliation(s)
- Kai Wang
- Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, USA.
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13
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Liu C, Wang K, Gong X, Heeger AJ. Low bandgap semiconducting polymers for polymeric photovoltaics. Chem Soc Rev 2016; 45:4825-46. [DOI: 10.1039/c5cs00650c] [Citation(s) in RCA: 389] [Impact Index Per Article: 48.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
This review highlights the design rules for low bandgap semiconducting polymers, with the overview of their applications in polymer solar cells and polymer photodetectors.
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Affiliation(s)
- Chang Liu
- College of Polymer Science and Polymer Engineering
- Department of Polymer Engineering
- The University of Akron
- Akron
- USA
| | - Kai Wang
- College of Polymer Science and Polymer Engineering
- Department of Polymer Engineering
- The University of Akron
- Akron
- USA
| | - Xiong Gong
- College of Polymer Science and Polymer Engineering
- Department of Polymer Engineering
- The University of Akron
- Akron
- USA
| | - Alan J. Heeger
- Center for Polymers and Organic Solids
- University of California
- Santa Barbara
- USA
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14
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A Mechanistic Understanding of a Binary Additive System to Synergistically Boost Efficiency in All-Polymer Solar Cells. Sci Rep 2015; 5:18024. [PMID: 26658472 PMCID: PMC4676009 DOI: 10.1038/srep18024] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 11/10/2015] [Indexed: 11/09/2022] Open
Abstract
All-polymer solar cells are herein presented utilizing the PBDTTT-CT donor and the P(NDI2OD-T2) acceptor with 1,8-diiodooctane (DIO) and 1-chloronaphthalene (CN) binary solvent additives. A systematic study of the polymer/polymer bulk heterojunction photovoltaic cells processed from the binary additives revealed that the microstructures and photophysics were quite different from those of a pristine system. The combination of DIO and CN with a DIO/CN ratio of 3:1 (3 vol% DIO, 1 vol% CN and 96 vol% o-DCB) led to suitable penetrating polymer networks, efficient charge generation and balanced charge transport, which were all beneficial to improving the efficiency. This improvement is attributed to increase in power conversion efficiency from 2.81% for a device without additives to 4.39% for a device with the binary processing additives. A detailed investigation indicates that the changes in the polymer:polymer interactions resulted in the formation of a percolating nasnoscale morphology upon processing with the binary additives. Depth profile measurements with a two-dimensional grazing incidence wide-angle X-ray scattering confirm this optimum phase feature. Furthermore impedance spectroscopy also finds evidence for synergistically boosting the device performance.
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15
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Liu C, Wang K, Du P, Wang E, Gong X, Heeger AJ. Ultrasensitive solution-processed broad-band photodetectors using CH₃NH₃PbI₃ perovskite hybrids and PbS quantum dots as light harvesters. NANOSCALE 2015; 7:16460-16469. [PMID: 26395642 DOI: 10.1039/c5nr04575d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Sensing from ultraviolet-visible to infrared is critical for both scientific and industrial applications. In this work, we demonstrate solution-processed ultrasensitive broad-band photodetectors (PDs) utilizing organolead halide perovskite materials (CH3NH3PbI3) and PbS quantum dots (QDs) as light harvesters. Through passivating the structural defects on the surface of PbS QDs with diminutive molecular-scaled CH3NH3PbI3, both trap states in the bandgap of PbS QDs for charge carrier recombination and the leakage currents occurring at the defect sites are significantly reduced. In addition, CH3NH3PbI3 itself is an excellent light harvester in photovoltaics, which contributes a great photoresponse in the ultraviolet-visible region. Consequently, operated at room temperature, the resultant PDs show a spectral response from 375 nm to 1100 nm, with high responsivities over 300 mA W(-1) and 130 mA W(-1), high detectivities exceeding 10(13) Jones (1 Jones = 1 cm Hz(1/2) W(-1)) and 5 × 10(12) Jones in the visible and near infrared regions, respectively. These device performance parameters are comparable to those from pristine inorganic counterparts. Thus, our results offer a facile and promising route for advancing the performance of broad-band PDs.
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Affiliation(s)
- Chang Liu
- Department of Polymer Engineering, College of Polymer Science and Polymer Engineering, University of Akron, Akron, OH 44325, USA.
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16
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Impact of alkoxyl tail of fullerene dyad acceptor on crystalline microstructure for efficient external treatment-free polymer solar cells with poly(3-hexylthiophene) as donor. Chem Res Chin Univ 2015. [DOI: 10.1007/s40242-015-5184-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Keshtov ML, Kuklin SA, Godovsky DY, Khokhlov AR, Kurchania R, Chen FC, Koukaras EN, Sharma GD. New alternating D-A1-D-A2copolymer containing two electron-deficient moieties based on benzothiadiazole and 9-(2-Octyldodecyl)-8H-pyrrolo[3,4-b]bisthieno[2,3-f:3',2'-h]quinoxaline-8,10(9H)-dione for efficient polymer solar cells. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27786] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- M. L. Keshtov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; Vavilova str., 28 Moscow 119991 Russia
| | - S. A. Kuklin
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; Vavilova str., 28 Moscow 119991 Russia
| | - D. Y. Godovsky
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; Vavilova str., 28 Moscow 119991 Russia
| | - A. R. Khokhlov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; Vavilova str., 28 Moscow 119991 Russia
- Faculty of Physics, Lomonosov Moscow State University; 1-2 Leninskiye Gory Moscow 119991 Russian Federation
| | - R. Kurchania
- Department of Physics; Maulana Azad National Institute of Technology (MANIT); Bhopal Madhya Pradesh 462051 India
| | - F. C. Chen
- Department of Photonics; National Chiao Tung University, 1001 University Road; Hsinchu 30010 Taiwan
| | - Emmanuel N. Koukaras
- Institute of Chemical Engineering Sciences, Foundation for Research & Technology; Hellas Stadiou Str. Platani Patras 26504 Greece
- Molecular Engineering Laboratory; Department of Physics; University of Patras; Patras 26500 GR Greece
| | - G. D. Sharma
- R&D Center for Engineering and Science, JEC Group of Colleges, Jaipur Engineering College; Jaipur Rajasthan 303101 India
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Liu X, Kim YJ, Ha YH, Zhao Q, Park CE, Kim YH. Effects of alkyl chain length on the optoelectronic properties and performance of pyrrolo-perylene solar cells. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8859-8867. [PMID: 25836743 DOI: 10.1021/acsami.5b01444] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
While the impact of alkyl side-chain length on the photovoltaic properties of conjugated polymers and their performance in bulk heterojunction (BHJ) solar cells has been studied extensively, analogous studies on pyrrolo-perylene-based polymers have not received adequate attention. To explore these effects, we synthesized two copolymers based on N-annulated pyrrolo-perylene and consisting of cyano group substituents on thiophene vinylene thiophene units with two different alkyl groups of 2-decyltetradecyl and 7-decylnonadecyl, and we studied them with regard to chemical structure and photovoltaic performance. UV-vis spectroscopy and cyclic voltammetry studies showed that variations in alkyl chain length affect crystallization, light absorption, and the highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels. These factors have a pronounced impact on the morphology of BHJ thin films and their charge carrier separation and transportation characteristics, which, in turn, influences photovoltaic properties.
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Affiliation(s)
- Xianqing Liu
- †Department of Chemistry and Research Institute of for Green Energy Convergence Technology (RIGET), Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Yu Jin Kim
- ‡POSTECH Organic Electronics Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea
| | - Yeon Hee Ha
- †Department of Chemistry and Research Institute of for Green Energy Convergence Technology (RIGET), Gyeongsang National University, Jinju, 660-701, Republic of Korea
| | - Qinghua Zhao
- §Department of Polymer Science and Engineering, Huaqiao University, Quanzhou, China
| | - Chan Eon Park
- ‡POSTECH Organic Electronics Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea
| | - Yun-Hi Kim
- †Department of Chemistry and Research Institute of for Green Energy Convergence Technology (RIGET), Gyeongsang National University, Jinju, 660-701, Republic of Korea
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Lai YY, Liao MH, Chen YT, Cao FY, Hsu CS, Cheng YJ. Compact bis-adduct fullerenes and additive-assisted morphological optimization for efficient organic photovoltaics. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20102-20109. [PMID: 25285727 DOI: 10.1021/am505616x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Bis-adduct fullerenes surrounded by two insulating addends sterically attenuate intermolecular interaction and cause inferior electron transportation. In this research, we have designed and synthesized a new class of bis-adduct fullerene materials, methylphenylmethano-C60 bis-adduct (MPC60BA), methylthienylmethano-C60 bis-adduct (MTC60BA), methylphenylmethano-C70 bis-adduct (MPC70BA), and methylthienylmethano-C70 bis-adduct (MTC70BA), functionalized with two compact phenylmethylmethano and thienylmethylmethano addends via cyclopropyl linkages. These materials with much higher-lying lowest unoccupied molecular orbital (LUMO) energy levels successfully enhanced the Voc values of the P3HT-based solar cell devices. The compact phenylmethylmethano and thienylmethylmethano addends to promote fullerene intermolecular interactions result in aggregation-induced phase separation as observed by the atomic force microscopy (AFM) and transmission electron microscopy (TEM) images of the poly(3-hexylthiophene-2,5-diyl) (P3HT)/bis-adduct fullerene thin films. The device based on the P3HT/MTC60BA blend yielded a Voc of 0.72 V, a Jsc of 5.87 mA/cm(2), and a fill factor (FF) of 65.3%, resulting in a power conversion efficiency (PCE) of 2.76%. The unfavorable morphologies can be optimized by introducing a solvent additive to fine-tune the intermolecular interactions. 1-Chloronaphthalene (CN) having better ability to dissolve the bis-adduct fullerenes can homogeneously disperse the fullerene materials into the P3HT matrix. Consequently, the aggregated fullerene domains can be alleviated to reach a favorable morphology. With the assistance of CN additive, the P3HT/MTC60BA-based device exhibited enhanced characteristics (a Voc of 0.78 V, a Jsc of 9.04 mA/cm(2), and an FF of 69.8%), yielding a much higher PCE of 4.92%. More importantly, the additive-assisted morphological optimization is consistently effective to all four compact bis-adduct fullerenes regardless of the methylphenylmethano or methylthienylmethano scaffolds as well as C60 or C70 core structures. Through the extrinsic additive treatment, these bis-adduct fullerene materials with compact architectures show promise for high-performance polymer solar cells.
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Affiliation(s)
- Yun-Yu Lai
- Department of Applied Chemistry, National Chiao Tung University , 1001 University Road, Hsin-Chu, 30010 Taiwan
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