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Lim JW. Polymer Materials for Optoelectronics and Energy Applications. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3698. [PMID: 39124361 PMCID: PMC11312893 DOI: 10.3390/ma17153698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 07/17/2024] [Accepted: 07/24/2024] [Indexed: 08/12/2024]
Abstract
This review comprehensively addresses the developments and applications of polymer materials in optoelectronics. Especially, this review introduces how the materials absorb, emit, and transfer charges, including the exciton-vibrational coupling, nonradiative and radiative processes, Förster Resonance Energy Transfer (FRET), and energy dynamics. Furthermore, it outlines charge trapping and recombination in the materials and draws the corresponding practical implications. The following section focuses on the practical application of organic materials in optoelectronics devices and highlights the detailed structure, operational principle, and performance metrics of organic photovoltaic cells (OPVs), organic light-emitting diodes (OLEDs), organic photodetectors, and organic transistors in detail. Finally, this study underscores the transformative impact of organic materials on the evolution of optoelectronics, providing a comprehensive understanding of their properties, mechanisms, and diverse applications that contribute to advancing innovative technologies in the field.
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Affiliation(s)
- Ju Won Lim
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 495 Tech Way, NW, Atlanta, GA 30318, USA
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2
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Li F, Lin FR, Jen AKY. Current State and Future Perspectives of Printable Organic and Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307161. [PMID: 37828582 DOI: 10.1002/adma.202307161] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/22/2023] [Indexed: 10/14/2023]
Abstract
Photovoltaic technology presents a sustainable solution to address the escalating global energy consumption and a reliable strategy for achieving net-zero carbon emissions by 2050. Emerging photovoltaic technologies, especially the printable organic and perovskite solar cells, have attracted extensive attention due to their rapidly transcending power conversion efficiencies and facile processability, providing great potential to revolutionize the global photovoltaic market. To accelerate these technologies to translate from the laboratory scale to the industrial level, it is critical to develop well-defined and scalable protocols to deposit high-quality thin films of photoactive and charge-transporting materials. Herein, the current state of printable organic and perovskite solar cells is summarized and the view regarding the challenges and prospects toward their commercialization is shared. Different printing techniques are first introduced to provide a correlation between material properties and printing mechanisms, and the optimization of ink formulation and film-formation during large-area deposition of different functional layers in devices are then discussed. Engineering perspectives are also discussed to analyze the criteria for module design. Finally, perspectives are provided regarding the future development of these solar cells toward practical commercialization. It is believed that this perspective will provide insight into the development of printable solar cells and other electronic devices.
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Affiliation(s)
- Fengzhu Li
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Francis R Lin
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Alex K-Y Jen
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
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3
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Ali S, Akhter MS, Waqas M, Zubair H, Bhatti HN, Mahal A, Shawky AM, Alkhouri A, Khera RA. End-capped engineering of Quinoxaline core-based non-fullerene acceptor materials with improved power conversion efficiency. J Mol Graph Model 2024; 127:108699. [PMID: 38150839 DOI: 10.1016/j.jmgm.2023.108699] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 12/17/2023] [Accepted: 12/19/2023] [Indexed: 12/29/2023]
Abstract
Improving the light-harvesting efficiency and boosting open circuit voltage are crucial challenges for enhancing the efficiency of organic solar cells. This work introduces seven new molecules (SA1-SA7) to upgrade the optoelectronic and photovoltaic properties of Q-C-F molecule-based solar cells. All recently designed molecules have the same alkyl-substituted Quinoxaline core and CPDT donor but vary in the end-capped acceptor subunits. All the investigated molecules have revealed superior properties than the model (R) by having absorbance ranging from 681 nm to 782 nm in the gaseous medium while 726 nm-861 nm in chloroform solvent, with the lowest band gap ranging from 1.91 to 2.19 eV SA1 molecule demonstrated the highest λmax (861 nm) in chloroform solvent and the lowest band gap (1.91 eV). SA2 molecule has manifested highest dipole moment (4.5089 D), lower exciton binding energy in gaseous (0.33 eV) and chloroform solvent (0.47 eV), and lower charge mobility of hole (0.0077693) and electron (0.0042470). At the same time, SA7 showed the highest open circuit voltage (1.56 eV) and fill factor (0.9166) due to solid electron-pulling acceptor moieties. From these supportive outcomes, it is inferred that our computationally investigated molecules may be promising candidates to be used in advanced versions of OSCs in the upcoming period.
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Affiliation(s)
- Sajjad Ali
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Muhammad Salim Akhter
- Department of Chemistry, College of Science, University of Bahrain, P. O. Box 32028, Bahrain
| | - Muhammad Waqas
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Hira Zubair
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Haq Nawaz Bhatti
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan
| | - Ahmed Mahal
- Department of Medical Biochemical Analysis, College of Health Technology, Cihan University-Erbil, Erbil, Kurdistan Region, Iraq
| | - Ahmed M Shawky
- Science and Technology Unit (STU), Umm Al-Qura University, Makkah, 21955, Saudi Arabia
| | - Anas Alkhouri
- College of Pharmacy, Cihan University-Erbil, Erbil, Kurdistan Region, Iraq
| | - Rasheed Ahmad Khera
- Department of Chemistry, University of Agriculture, Faisalabad, 38000, Pakistan.
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4
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Borges I, Guimarães RMPO, Monteiro-de-Castro G, Rosa NMP, Nieman R, Lischka H, Aquino AJA. A comprehensive analysis of charge transfer effects on donor-pyrene (bridge)-acceptor systems using different substituents. J Comput Chem 2023; 44:2424-2436. [PMID: 37638684 DOI: 10.1002/jcc.27208] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/27/2023] [Accepted: 08/02/2023] [Indexed: 08/29/2023]
Abstract
The alternant polycyclic aromatic hydrocarbon pyrene has photophysical properties that can be tuned with different donor and acceptor substituents. Recently, a D (donor)-Pyrene (bridge)-A (acceptor) system, DPA, with the electron donor N,N-dimethylaniline (DMA), and the electron acceptor trifluoromethylphenyl (TFM), was investigated by means of time-resolved spectroscopic measurements (J. Phys. Chem. Lett. 2021, 12, 2226-2231). DPA shows great promise for potential applications in organic electronic devices. In this work, we used the ab initio second-order algebraic diagrammatic construction method ADC(2) to investigate the excited-state properties of a series of analogous DPA systems, including the originally synthesized DPAs. The additionally investigated substituents were amino, fluorine, and methoxy as donors and nitrile and nitro groups as acceptors. The focus of this work was on characterizing the lowest excited singlet states regarding charge transfer (CT) and local excitation (LE) characters. For the DMA-pyrene-TFM system, the ADC(2) calculations show two initial electronic states relevant for interpreting the photodynamics. The bright S1 state is locally excited within the pyrene moiety, and an S2 state is localized ~0.5 eV above S1 and characterized as a donor to pyrene CT state. HOMO and LUMO energies were employed to assess the efficiency of the DPA compounds for organic photovoltaics (OPVs). HOMO-LUMO and optical gaps were used to estimate power conversion and light-harvesting efficiencies for practical applications in organic solar cells. Considering the systems using smaller D/A substituents, compounds with the strong acceptor NO2 substituent group show enhanced CT and promising properties for use in OPVs. Some of the other compounds with small substituents are also found to be competitive in this regard.
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Affiliation(s)
- Itamar Borges
- Departamento de Química, Instituto Militar de Engenharia (IME), Rio de Janeiro, Brazil
| | | | | | - Nathália M P Rosa
- Departamento de Química, Instituto Militar de Engenharia (IME), Rio de Janeiro, Brazil
| | - Reed Nieman
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas, USA
| | - Hans Lischka
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas, USA
| | - Adelia J A Aquino
- Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas, USA
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5
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Lazaar K, Gueddida S, Said M, Lebègue S. Tuning the electronic and optical properties of small organic acenedithiophene molecular crystals for photovoltaic applications: First principles calculations. J Chem Phys 2023; 159:194304. [PMID: 37971037 DOI: 10.1063/5.0171212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/25/2023] [Indexed: 11/19/2023] Open
Abstract
Periodic density functional theory was employed to investigate the impact of chemical modifications on the properties of π-conjugated acenedithiophene molecular crystals. Here, we highlight the importance of the β-methylthionation effect, the position of the sulfur atoms of the thiacycle group and their size, and the number of central benzene rings in the chemical modification strategy. Our results show that the introduction of the methylthio groups at the β-positions of the thiophene and the additional benzene ring at the center of the BDT crystal structure are a promising strategy to improve the performance of organic semiconductors, as observed experimentally. We found that β-MT-ADT exhibits large charge carrier mobility, which is in good agreement with the experimental results and comparable to that of rubrene. In addition, the electronic and optical properties of these ambipolar materials suggest promising performances with β-MT-ADT > ADT >β-MT-NDT > NDT > BEDT-BDT >β-MT-BDT > BDT. Moreover, functionalization with thiacycle-fused sulfur atoms of different sizes and numbers improve the properties of BDT but is still less efficient than the methylthionation effect. Overall, our findings suggest a promising molecular modification strategy for possibly high performance ambipolar organic semiconducting materials.
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Affiliation(s)
- Koussai Lazaar
- Laboratoire des Nanomatériaux et Systèmes pour les Énergies Renouvelables (LaNSER), Centre de Recherches et des Technologies de l'Energie, Technopole Borj-Cedria, Hammam Lif 2050, Tunisia
| | - Saber Gueddida
- Univ. Lorraine, LPCT, CNRS UMR7019, F-54506 Vandoeuvre-Les-Nancy, France
| | - Moncef Said
- Université de Monastir, Faculté des Sciences de Monastir, Laboratoire de la Matière Condensée et des Nanosciences (LMCN), LR11ES40, Avenue de l'Environnement, 5000 Monastir, Tunisia
| | - Sébastien Lebègue
- Univ. Lorraine, LPCT, CNRS UMR7019, F-54506 Vandoeuvre-Les-Nancy, France
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Huang YC, Cha HC, Huang SH, Li CF, Santiago SRM, Tsao CS. Highly Efficient Flexible Roll-to-Roll Organic Photovoltaics Based on Non-Fullerene Acceptors. Polymers (Basel) 2023; 15:4005. [PMID: 37836054 PMCID: PMC10575468 DOI: 10.3390/polym15194005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
The ability of organic photovoltaics (OPVs) to be deposited on flexible substrates by roll-to-roll (R2R) processes is highly attractive for rapid mass production. Many research teams have demonstrated the great potential of flexible OPVs. However, the fabrication of R2R-coated OPVs is quite limited. There is still a performance gap between the R2R flexible OPVs and the rigid OPVs. In this study, we demonstrate the promising photovoltaic characteristics of flexible OPVs fabricated from blends of low bandgap polymer 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) and non-fullerene 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). We successfully R2R slot-die coated the flexible OPVs with high power conversion efficiency (PCE) of over 8.9% under irradiation of simulated sunlight. Our results indicate that the processing parameters significantly affect the PCE of R2R flexible OPVs. By adjusting the amount of solvent additive and processing temperature, as well as optimizing thermal annealing conditions, the high PCE of R2R slot-die coated OPVs can be obtained. These results provide significant insights into the fundamentals of highly efficient OPVs for the R2R slot-die coating process.
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Affiliation(s)
- Yu-Ching Huang
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
- Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 24301, Taiwan
- Department of Chemical and Materials Engineering, College of Engineering, Chang Gung University, Taoyuan 33302, Taiwan
| | - Hou-Chin Cha
- Institute of Nuclear Energy Research, Taoyuan 32546, Taiwan
| | - Shih-Han Huang
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Chia-Feng Li
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | | | - Cheng-Si Tsao
- Institute of Nuclear Energy Research, Taoyuan 32546, Taiwan
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
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7
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Cao Z, Tolba SA, Li Z, Mason GT, Wang Y, Do C, Rondeau-Gagné S, Xia W, Gu X. Molecular Structure and Conformational Design of Donor-Acceptor Conjugated Polymers to Enable Predictable Optoelectronic Property. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302178. [PMID: 37318244 DOI: 10.1002/adma.202302178] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/02/2023] [Indexed: 06/16/2023]
Abstract
Tuning the optoelectronic properties of donor-acceptor conjugated polymers (D-A CPs) is of great importance in designing various organic optoelectronic devices. However, there remains a critical challenge in precise control of bandgap through synthetic approach, since the chain conformation also affects molecular orbital energy levels. Here, D-A CPs with different acceptor units are explored that show an opposite trend in energy band gaps with the increasing length of oligothiophene donor units. By investigating their chain conformation and molecular orbital energy, it is found that the molecular orbital energy alignment between donor and acceptor units plays a crucial role in dictating the final optical bandgap of D-A CPs. For polymers with staggered orbital energy alignment, the higher HOMO with increasing oligothiophene length leads to a narrowing of the optical bandgap despite decreased chain rigidity. On the other hand, for polymers with sandwiched orbital energy alignment, the increased band gap with increasing oligothiophene length originates from the reduction of bandwidth due to more localized charge density distribution. Thus, this work provides a molecular understanding of the role of backbone building blocks on the chain conformation and bandgaps of D-A CPs for organic optoelectronic devices through the conformation design and segment orbital energy alignment.
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Affiliation(s)
- Zhiqiang Cao
- School of Polymer Science and Engineering, Center for Optoelectronic Materials and Devices, The University of Southern Mississippi, Hattiesburg, MS, 39406, USA
| | - Sara A Tolba
- Materials and Nanotechnology Program, North Dakota State University, Fargo, ND, 58108, USA
| | - Zhaofan Li
- Department of Civil, Construction, and Environmental Engineering, North Dakota State University, Fargo, ND, 58108, USA
| | - Gage T Mason
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, N9B3P4, Canada
| | - Yang Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Changwoo Do
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Simon Rondeau-Gagné
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, N9B3P4, Canada
| | - Wenjie Xia
- Department of Civil, Construction, and Environmental Engineering, North Dakota State University, Fargo, ND, 58108, USA
- Department of Aerospace Engineering, Iowa State University, Ames, IA, 50011, USA
| | - Xiaodan Gu
- School of Polymer Science and Engineering, Center for Optoelectronic Materials and Devices, The University of Southern Mississippi, Hattiesburg, MS, 39406, USA
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Das PK, Dhawan A. Plasmonic enhancement of photovoltaic characteristics of organic solar cells by employing parabola nanostructures at the back of the solar cell. RSC Adv 2023; 13:26780-26792. [PMID: 37681038 PMCID: PMC10481644 DOI: 10.1039/d3ra03637e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/17/2023] [Indexed: 09/09/2023] Open
Abstract
In this paper, we demonstrate the enhanced performance of organic solar cells (OSCs) comprising low band gap photoactive layers (PMDPP3T:PC70BM) and 2-dimensional (2D) arrays of either Ag nano-spheres, nano-hemispheres, or nano-parabolas embedded at the back of the OSCs. Finite-difference time-domain (FDTD) simulations were performed to compare the performance of the OSCs containing the different plasmonic nanostructures, in terms of optical absorption, short circuit current density (JSC) and power conversion efficiency (PCE). The results demonstrate that single junction OSCs consisting of this new active layer polymer (PMDPP3T), blended with PC70BM, and plasmonic nanostructures at the back of the OSC can enhance the optical absorption in the visible and the NIR region. We demonstrate that the aspect ratio of the nanoparticles embedded at the back of OSCs is a vital parameter for light absorption enhancement. It is observed that the performance in terms of JSC and PCE enhancement of OSC having 2D arrays of Ag nano-parabola at the back of the solar cell improved by 26.41% and 26.37%, respectively, compared to a planar OSC. The enhancement in photon absorption can be attributed due to the enhancement of light scattering from metallic nanostructures near their localized plasmon resonance.
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Affiliation(s)
- Pankaj Kumar Das
- Department of Electrical Engineering, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
| | - Anuj Dhawan
- Department of Electrical Engineering, Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India
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9
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Jin R, Zhang X, Xin J, Xiao W. Molecular design of D-π-A-π-D small molecule donor materials with narrow energy gap for organic solar cells applications. J Mol Model 2023; 29:273. [PMID: 37542668 DOI: 10.1007/s00894-023-05680-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 07/30/2023] [Indexed: 08/07/2023]
Abstract
CONTEXT Developing novel materials present a great challenge to improve the photovoltaic performance of organic solar cells (OSCs). In this paper, we designed a series of the donor-π bridge-acceptor-π bridge-donor (D-π-A-π-D) structure molecules. These molecules consist of diketopyrrolopyrrole (DPP) moiety as core, 9-hexyl-carbazole moiety as terminal groups, and different planar electron-rich aromatic groups as π-bridges. The density functional theory (DFT) and time-dependent DFT (TD-DFT) computations showed that the frontier molecular orbital (FMO) energy levels, energy gaps, electron-driving forces (ΔEL-L), open-circuit voltage (Voc), fill factor (FF), reorganization energy (λ), exciton binding energy (Eb), and absorption spectra of the designed molecules can be effectively adjusted by the introduction of different π-bridges. The designed molecules have narrow energy gap and strong absorption spectra, which are beneficial for improving the photoelectric conversion efficiency of organic solar cells. In addition, the designed molecules possess large ΔEL-L, large Voc, and FF values and low Eb when the typical fullerene derivatives are used as acceptors. The FMO energy levels of the designed molecules can provide match well with the typical fullerene acceptors PC61BM, bisPC61BM, and PC71BM. Our results suggest that the designed molecules are expected to be promising donor materials for OSCs. METHODS All DFT and TD-DFT calculations were carried out using the Gaussian 09 code. The computational technique chosen was the hybrid functional B3LYP and the 6-31G(d,p) basis set. The benzene and chloroform solvent effects have been considered using the polarized continuum model (PCM) at the TD-DFT level. The simulated absorption spectra of designed molecules were plotted by using the GaussSum 1.0 program.
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Affiliation(s)
- Ruifa Jin
- College of Chemistry and Life Sciences, Chifeng University, Chifeng, 024000, China.
- Inner Mongolia Key Laboratory of Photoelectric Functional Materials, Chifeng University, Chifeng, 024000, China.
| | - Xinhao Zhang
- College of Chemistry and Life Sciences, Chifeng University, Chifeng, 024000, China
- Inner Mongolia Key Laboratory of Photoelectric Functional Materials, Chifeng University, Chifeng, 024000, China
| | - Jingfan Xin
- College of Chemistry and Life Sciences, Chifeng University, Chifeng, 024000, China
- Inner Mongolia Key Laboratory of Photoelectric Functional Materials, Chifeng University, Chifeng, 024000, China
| | - Wenmin Xiao
- College of Chemistry and Life Sciences, Chifeng University, Chifeng, 024000, China
- Inner Mongolia Key Laboratory of Photoelectric Functional Materials, Chifeng University, Chifeng, 024000, China
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10
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Rehman ZU, Haris M, Ryu SU, Jahankhan M, Song CE, Lee HK, Lee SK, Shin WS, Park T, Lee J. Trifluoromethyl-Substituted Conjugated Random Terpolymers Enable High-Performance Small and Large-Area Organic Solar Cells Using Halogen-Free Solvent. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302376. [PMID: 37357145 PMCID: PMC10460891 DOI: 10.1002/advs.202302376] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/30/2023] [Indexed: 06/27/2023]
Abstract
The advancement of non-fullerene acceptors with crescent-shaped geometry has led to the need for polymer donor improvements. Additionally, there is potential to enhance the photovoltaic parameters in high-efficiency organic solar cells (OSCs). The random copolymerization method is a straightforward and effective strategy to further optimize photoactive morphology and enhance device performance. However, finding a suitable third component in terpolymers remains a crucial challenge. In this study, a series of terpolymer donors (PTF3, PTF5, PTF10, PTF20, and PTF50) is synthesized by introducing varying amounts of the trifluoromethyl-substituted unit (CF3) into the PM6 polymer backbone. Even subtle changes in the CF3 content can significantly enhance all the photovoltaic parameters due to the optimized energy levels, molecular aggregation/miscibility, and bulk-heterojunction morphology of the photoactive materials. Thus, the best binary OSC based on the PTF5:Y6-BO achieves an outstanding power conversion efficiency (PCE) of 18.2% in the unit cell and a PCE of 11.6% in the sub-module device (aperture size: 54.45 cm2 ), when using halogen-free solvent o-xylene. This work showcases the remarkable potential of the easily accessible CF3 unit as a key constituent in the construction of terpolymer donors in high-performance OSCs.
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Affiliation(s)
- Zia Ur Rehman
- Advanced Energy Materials Research CenterKorea Research Institute of Chemical Technology (KRICT)Daejeon34114Republic of Korea
- Advanced Materials and Chemical EngineeringUniversity of Science and Technology (UST)Daejeon34113Republic of Korea
| | - Muhammad Haris
- Advanced Energy Materials Research CenterKorea Research Institute of Chemical Technology (KRICT)Daejeon34114Republic of Korea
- Advanced Materials and Chemical EngineeringUniversity of Science and Technology (UST)Daejeon34113Republic of Korea
| | - Seung Un Ryu
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH)Gyeongsangbuk‐doPohang37673Republic of Korea
| | - Muhammad Jahankhan
- Advanced Energy Materials Research CenterKorea Research Institute of Chemical Technology (KRICT)Daejeon34114Republic of Korea
- Advanced Materials and Chemical EngineeringUniversity of Science and Technology (UST)Daejeon34113Republic of Korea
| | - Chang Eun Song
- Advanced Energy Materials Research CenterKorea Research Institute of Chemical Technology (KRICT)Daejeon34114Republic of Korea
- Advanced Materials and Chemical EngineeringUniversity of Science and Technology (UST)Daejeon34113Republic of Korea
| | - Hang Ken Lee
- Advanced Energy Materials Research CenterKorea Research Institute of Chemical Technology (KRICT)Daejeon34114Republic of Korea
| | - Sang Kyu Lee
- Advanced Energy Materials Research CenterKorea Research Institute of Chemical Technology (KRICT)Daejeon34114Republic of Korea
- Advanced Materials and Chemical EngineeringUniversity of Science and Technology (UST)Daejeon34113Republic of Korea
| | - Won Suk Shin
- Advanced Energy Materials Research CenterKorea Research Institute of Chemical Technology (KRICT)Daejeon34114Republic of Korea
- Advanced Materials and Chemical EngineeringUniversity of Science and Technology (UST)Daejeon34113Republic of Korea
| | - Taiho Park
- Department of Chemical EngineeringPohang University of Science and Technology (POSTECH)Gyeongsangbuk‐doPohang37673Republic of Korea
| | - Jong‐Cheol Lee
- Advanced Energy Materials Research CenterKorea Research Institute of Chemical Technology (KRICT)Daejeon34114Republic of Korea
- Advanced Materials and Chemical EngineeringUniversity of Science and Technology (UST)Daejeon34113Republic of Korea
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11
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Hassan T, Adnan M, Hussain R, Hussain F, Khan MU. Molecular engineering of Pyran‐fused acceptor–donor–acceptor‐type non‐fullerene acceptors for highly efficient organic solar cells—A density functional theory approach. J PHYS ORG CHEM 2023; 36. [DOI: 10.1002/poc.4507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 03/21/2023] [Indexed: 09/01/2023]
Abstract
AbstractThe end‐capped modification proves that it is an excellent attempt to improve the solar cells performances. Therefore, nowadays, many researchers are working to design new molecules for potential use in organic photovoltaics. Herein, we have modified new molecules (SA1–SA5) from the reference (R) for fullerene‐free solar cells. These novel molecules have lower excitation energy levels that make the easier excitation in the excited state. Additionally, SA1 to SA5 molecules exhibit excellent charge mobility due to the modification of an efficient core units. Geometric and physiochemical investigations indicate that the modeled molecules are beneficial for efficient organic solar cells. The estimation of frontier molecular orbitals analysis, reorganizational energy, photovoltaic characteristics, and charge transmission calculations was done using density functional theory calculations with B3LYP/6‐31G (d, p) basis set. Among all designed molecules, SA3 has emerged as the preferred choice because of its outstanding photovoltaic characteristics, which include a minimal bandgap of 2.03 eV and reorganization energy of electron and holes of 0.0095 and 0.0077 eV, correspondingly. The designed materials (SA1–SA5) displayed a high λ max values, that is, 693.54 nm (in gas) and 679.63 nm (in chloroform). This theoretical framework suggests that the required photovoltaic properties may be efficiently obtained by remodeling the new molecules.
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Affiliation(s)
- Talha Hassan
- Department of Chemistry University of Okara Okara Pakistan
| | - Muhammad Adnan
- Graduate School of Energy Science and Technology Chungnam National University Daejeon Republic of Korea
| | - Riaz Hussain
- Department of Chemistry University of Okara Okara Pakistan
| | - Fakhar Hussain
- Department of Chemistry University of Okara Okara Pakistan
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12
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Nagarjuna P, Gupta V, Bagui A, Singh SP. Molecular engineering of new electron acceptor for highly efficient solution processable organic solar cells using state-of-the-art polymer donor PffBT4T-2OD. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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13
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Chen S, Hong L, Dong M, Deng W, Shao L, Bai Y, Zhang K, Liu C, Wu H, Huang F. A Polyfluoroalkyl-Containing Non-fullerene Acceptor Enables Self-Stratification in Organic Solar Cells. Angew Chem Int Ed Engl 2023; 62:e202213869. [PMID: 36333961 DOI: 10.1002/anie.202213869] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Indexed: 11/06/2022]
Abstract
The elaborate control of the vertical phase distribution within an active layer is critical to ensuring the high performance of organic solar cells (OSCs), but is challenging. Herein, a self-stratification active layer is realised by adding a novel polyfluoroalkyl-containing non-fullerene small-molecule acceptor (NFSMA), EH-C8 F17 , as the guest into PM6:BTP-eC9 blend. A favourable vertical morphology was obtained with an upper acceptor-enriched thin layer and a lower undisturbed bulk heterojunction layer. Consequently, a power conversion efficiency of 18.03 % was achieved, higher than the efficiency of 17.40 % for the device without EH-C8 F17 . Additionally, benefiting from the improved charge transport and collection realised by this self-stratification strategy, the OSC with a thickness of 350 nm had an impressive PCE of 16.89 %. The results of the study indicate that polyfluoroalkyl-containing NFSMA-assisted self-stratification within the active layer is effective for realising an ideal morphology for high-performance OSCs.
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Affiliation(s)
- Shihao Chen
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Ling Hong
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Minghao Dong
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Wanyuan Deng
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Lin Shao
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Yuanqing Bai
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Kai Zhang
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Chunchen Liu
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Hongbin Wu
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Fei Huang
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
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14
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Quinoxaline-based Polymers with Asymmetric Aromatic Side Chain Enables 16.27% Efficiency for Organic Solar Cells. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-023-2895-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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15
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Zhang X, Wang J, Li Z, Guo S, Tong Y, Liu B, Yue G, Hao Y. Improved photovoltaic performance of PTB7:PC71BM blend by thermal annealing and solvent vapor annealing. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05034-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Păușescu I, Todea A, Dreavă DM, Boboescu T, Pațcan B, Pațcan L, Albulescu D, Badea V, Peter F, Tőtős R, Ursu D, Szolga L, Medeleanu M. Experimental and Computational Studies on Bio-Inspired Flavylium Salts as Sensitizers for Dye-Sensitized Solar Cells. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6985. [PMID: 36234326 PMCID: PMC9572272 DOI: 10.3390/ma15196985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/24/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Six new bio-inspired flavylium salts were synthesized and investigated by a combined computational and experimental study for dye-sensitized solar cell applications. The compounds were characterized by FT-IR, UV-Vis, NMR spectroscopy, and LC-MS spectrometry techniques. The pH-dependent photochromic properties of the flavylium dyes were investigated through a UV-Vis spectroscopy study and revealed that they follow the same network of chemical reactions as anthocyanins upon pH changes. The structural and electronic properties of the dyes were investigated using density functional theory (DFT) and time-dependent density functional theory (TD-DFT). Geometry optimization calculation revealed that all dyes, regardless of the specie, flavylium cations or quinoidal bases, present a planar geometry. The photovoltaic performances of the dyes, in both flavylium and quinoidal base forms, were evaluated by the HOMO and LUMO energies and by calculating the light-harvesting efficiencies, the free energy change of electron injection, and the free energy change regeneration. The MO analysis showed that all dyes can inject electrons into the conduction band of the TiO2 upon excitation and that the redox couple can regenerate the oxidized dyes. The results obtained for the free energy change of electron injection suggest that the quinoidal bases should inject electrons into the semiconductor more efficiently than the flavylium cations. The values for the free energy change regeneration showed that the redox electrolyte can easily regenerate all dyes. Dipole moment analysis was also performed. DSSCs based on the dyes, in both flavylium and quinoidal base forms, were assembled, and their photovoltaic performances were evaluated by measuring the open-circuit voltage, the short circuit current density, the fill factor, and the energy conversion efficiency. Results obtained by both experimental and computational studies showed that the overall performances of the DSSCs with the quinoidal forms were better than those obtained with the flavylium cations dyes.
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Affiliation(s)
- Iulia Păușescu
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
| | - Anamaria Todea
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
| | - Diana-Maria Dreavă
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
| | - Tania Boboescu
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
| | - Bianca Pațcan
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
| | - Larisa Pațcan
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
| | - Daiana Albulescu
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
- National Institute of Research and Development for Electrochemistry and Condensed Matter, Dr A. Păunescu Podeanu 144, 300569 Timisoara, Romania
| | - Valentin Badea
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
| | - Francisc Peter
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
| | - Róbert Tőtős
- Faculty of Chemistry and Chemical Engineering, Babes Bolyai University, Arany Janos 11, 400028 Cluj-Napoca, Romania
| | - Daniel Ursu
- National Institute of Research and Development for Electrochemistry and Condensed Matter, Dr A. Păunescu Podeanu 144, 300569 Timisoara, Romania
| | - Lorant Szolga
- Optoelectronics Group, Base of Electronics Department, ETTI, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
| | - Mihai Medeleanu
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Carol Telbisz 6, 300001 Timisoara, Romania
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17
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Zhao N, Zhang R, Zou X, Su X, Dang F, Wen G, Zhang W, Zheng K, Chen H, Wu K. Photoinduced Polaron Formation in a Polymerized Electron-Acceptor Semiconductor. J Phys Chem Lett 2022; 13:5143-5150. [PMID: 35658092 DOI: 10.1021/acs.jpclett.2c01015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Polymerized small molecular acceptor (PSMA) based all-polymer solar cells (all-PSC) have achieved power conversion efficiencies (PCE) over 16%, and the PSMA is considered to hold great promise for further improving the performance of all-PSC. Yet, in comparison with that of the polymer donor, the photophysics of a polymerized acceptor remains poorly understood. Herein, the excited state dynamics in a polymerized acceptor PZT810 was comprehensively investigated under various pump intensities and photon energies. The excess excitation energy was found to play a key role in excitons dissociation into free polarons for neat PSMA films, while free polarons cannot be generated from the polaron pairs in neat acceptor films. This work reveals an in-depth understanding of relaxation dynamics for PSMAs and that the underlying photophysical origin of PSMA can be mediated by excitation energies and intensities. These results would benefit the realization of the working mechanism for all-PSC and the designing of new PSMAs.
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Affiliation(s)
- Ningjiu Zhao
- Songshan Lake Materials Laboratory, Dongguan, 523808, China
| | - Rui Zhang
- Department of Physics, Chemsitry and Biology (IFM), Linköping University, Linköping, SE-58183, Sweden
| | - Xianshao Zou
- Division of Chemical Physics, Lund University, Lund, 22100, Sweden
| | - Xiaojun Su
- Department of Basic Courses, Guangzhou Maritime University, Guangzhou, 510725, China
| | - Fan Dang
- Songshan Lake Materials Laboratory, Dongguan, 523808, China
| | - Guanzhao Wen
- School of Physics and Materials Science, Guangzhou University, Guangzhou, 510006, China
| | - Wei Zhang
- School of Physics and Materials Science, Guangzhou University, Guangzhou, 510006, China
- Research Center for Advanced Information Materials (CAIM), Huangpu Research and Graduate School of Guangzhou University, Guangzhou, 510006, China
- Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou, 510006, China
| | - Kaibo Zheng
- Division of Chemical Physics, Lund University, Lund, 22100, Sweden
| | - Hailong Chen
- Songshan Lake Materials Laboratory, Dongguan, 523808, China
| | - Kehui Wu
- Songshan Lake Materials Laboratory, Dongguan, 523808, China
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18
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Nowsherwan GA, Samad A, Iqbal MA, Mushtaq T, Hussain A, Malik M, Haider S, Pham PV, Choi JR. Performance Analysis and Optimization of a PBDB-T:ITIC Based Organic Solar Cell Using Graphene Oxide as the Hole Transport Layer. NANOMATERIALS 2022; 12:nano12101767. [PMID: 35630988 PMCID: PMC9147690 DOI: 10.3390/nano12101767] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 02/04/2023]
Abstract
The hole transport layer (HTL) in organic solar cells (OSCs) plays an imperative role in boosting the cell’s performance. PEDOT: PSS is a conventional HTL used in OSCs owing to its high design cost and instability issues. It can be replaced with graphene oxide to increase the cell performance by overcoming instability issues. Graphene oxide (GO) has gained popularity in recent years for its practical use in solar energy due to its remarkable mechanical, electrical, thermal, and optical properties. This work uses SCAPS-1D to examine the results of graphene oxide (GO)-based organic solar cells by giving a comparison between the performance of absorber layers and a GO-based HTL to see which absorber material interacts more strongly with GO. The absorber layer PBDB-T:ITIC paired with GO as HTL outperforms the other absorber layers due to its better optical and electrical characteristics. Numerical simulations are performed within the SCAPS software at various absorber layer thicknesses, defect densities, and doping values to assess the influence on device performance and efficiency. After cell optimization, the best efficiency of an improved OSC is found to be 17.36%, and the outcomes of the simulated OSC are referenced to the results of the experimentally implemented OSC. These results provide a possible future direction for developing GO-based OSCs with higher efficiency.
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Affiliation(s)
- Ghazi Aman Nowsherwan
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan; (G.A.N.); (A.S.); (T.M.); (A.H.); (M.M.)
| | - Abdul Samad
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan; (G.A.N.); (A.S.); (T.M.); (A.H.); (M.M.)
| | - Muhammad Aamir Iqbal
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Correspondence: (M.A.I.); (J.R.C.)
| | - Tauqeer Mushtaq
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan; (G.A.N.); (A.S.); (T.M.); (A.H.); (M.M.)
| | - Ameer Hussain
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan; (G.A.N.); (A.S.); (T.M.); (A.H.); (M.M.)
| | - Maria Malik
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan; (G.A.N.); (A.S.); (T.M.); (A.H.); (M.M.)
| | - Sabah Haider
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan;
| | - Phuong V. Pham
- Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310027, China;
| | - Jeong Ryeol Choi
- Department of Nanoengineering, Kyonggi University, Suwon 16227, Korea
- Correspondence: (M.A.I.); (J.R.C.)
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19
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Hu R, Liu Y, Peng J, Jiang J, Qing M, He X, Huo MM, Zhang W. Charge Photogeneration and Recombination in Fluorine-Substituted Polymer Solar Cells. Front Chem 2022; 10:846898. [PMID: 35281555 PMCID: PMC8907822 DOI: 10.3389/fchem.2022.846898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
In this contribution, we studied the effect of fluorine substitution on photogenerated charge generation, transport, and recombination in polymer solar cells. Two conjugated polymer materials, PBDTTT-E (fluorine free) and PTB7 (one fluorine substitution), were compared thoroughly. Meanwhile, various characterization techniques, including atomic force microscopy, steady-state spectroscopy, transient absorption spectroscopy, spectroelectrochemistry, and electrical measurements, were employed to analyse the correlation between molecular structure and device performance. The results showed that the influence of fluorine substitution on both the exciton binding energy of the polymer and the carrier recombination dynamics in the ultrafast timescale on the polymer was weak. However, we found that the fluorine substitution could enhance the exciton lifetime in neat polymer film, and it also could increase the mobility of photogenerated charge. Moreover, it was found that the SOMO energy level distribution of the donor in a PTB7:PC71BM solar cell could facilitate hole transport from the donor/acceptor interface to the inner of the donor phase, showing a better advantage than the PBDTTT-E:PC71BM solar cell. Therefore, fluorine substitution played a critical role for high-efficiency polymer solar cells.
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Affiliation(s)
- Rong Hu
- School of Materials Science and Engineering, Chongqing University of Arts and Sciences, Chongqing, China
| | - Yurong Liu
- School of Materials Science and Engineering, Chongqing University of Arts and Sciences, Chongqing, China
| | - Jun Peng
- School of Physics and Materials Science, Guangzhou University, Guangzhou, China
| | - Jianjun Jiang
- School of Physics and Materials Science, Guangzhou University, Guangzhou, China
| | - Mengyao Qing
- School of Physics and Materials Science, Guangzhou University, Guangzhou, China
| | - Xiaochuan He
- Songshan Lake Materials Laboratory, Dongguan, China
| | - Ming-Ming Huo
- Qingdao Branch, Naval Aeronautical University, Qingdao, China
| | - Wei Zhang
- School of Physics and Materials Science, Guangzhou University, Guangzhou, China
- Research Center for Advanced Information Materials (CAIM), Huangpu Research and Graduate School of Guangzhou University, Guangzhou, China
- Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou, China
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20
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Effect of the Terminal Acceptor Unit on the Performance of Non-Fullerene Indacenodithiophene Acceptors in Organic Solar Cells. Molecules 2022; 27:molecules27041229. [PMID: 35209019 PMCID: PMC8877381 DOI: 10.3390/molecules27041229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/08/2022] [Accepted: 02/09/2022] [Indexed: 11/17/2022] Open
Abstract
Four acceptor–donor–acceptor (A–D–A)-type molecules bearing indacenodithiophene as donating central core and various end-capping acceptor units have been designed and synthesised as n-type materials suitable for organic solar cells (OSCs). The studied optical and electrochemical properties supported by theoretical calculations revealed that the nature and the strength of the terminal groups exert a decisive influence on the polymer bulk-heterojunction OSC performance.
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21
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Kim HJ, Jung IS, Jung S, Kim D, Minami D, Byun S, Choi T, Shin J, Yun S, Heo CJ, Park KB, Park SY, Lim SJ, Lee HS, Choi B. Harnessing Intramolecular Chalcogen-Chalcogen Bonding in Merocyanines for Utilization in High-Efficiency Photon-to-Current Conversion Optoelectronics. ACS APPLIED MATERIALS & INTERFACES 2022; 14:4360-4370. [PMID: 34890196 DOI: 10.1021/acsami.1c16950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A novel series of donor (D)-π-acceptor (A) merocyanine molecules harnessed with intramolecular chalcogen bonding (ChaB) is designed, synthesized, and characterized. ChaB comprises periodic chalcogen atoms, S, Se, and Te, and a neighboring oxygen atom of a carbonyl moiety. Compared to the D-π-A merocyanine dye with nontraditional intramolecular hydrogen bonding, the novel molecules with an intramolecular ChaB exhibit remarkably smaller absorption spectral widths and higher absorption coefficients attributed to their cyanine-like characteristics approaching the resonance parameter (c2) ∼0.5; furthermore, they exhibit better thermal stabilities and electrical charge-carrier transport properties in films. These novel D-π-A merocyanines harnessed with intramolecular ChaB networks are successfully utilized in high-performance color-selective organic photon-to-current conversion optoelectronic devices with excellent thermal stabilities. This study reports that the unique intramolecular ChaB plays an essential role in locking the molecular conformation of merocyanine molecules and enhancing the optical, thermal, and optoelectronic properties of high-performance and high-efficiency organic photon-to-current conversion devices.
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Affiliation(s)
- Hyeong-Ju Kim
- Organic Material Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - In-Sun Jung
- Analytical Engineering Group, Autonomous Material Development Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Seyoung Jung
- Laboratory of Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University, ENG 445, Seoul 08826, South Korea
| | - Dongmin Kim
- Analytical Engineering Group, Autonomous Material Development Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Daiki Minami
- CSE Team, Data & Information Technology (DIT) Center, Samsung Electronics Co., Limited, 1 Samsungjeonja-ro, Hwasung-si, Gyeonggi-do 18448, South Korea
| | - Sunjung Byun
- Analytical Engineering Group, Autonomous Material Development Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Taejin Choi
- Organic Material Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Jisoo Shin
- Organic Material Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Sungyoung Yun
- Organic Material Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Chul-Joon Heo
- Organic Material Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Kyung-Bae Park
- Organic Material Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Soo Young Park
- Laboratory of Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University, ENG 445, Seoul 08826, South Korea
| | - Seon-Jeong Lim
- Organic Material Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Hyo Sug Lee
- Analytical Engineering Group, Autonomous Material Development Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
| | - Byoungki Choi
- Organic Material Laboratory, Materials Research Center, Samsung Advanced Institute of Technology (SAIT), Samsung Electronics Co., Limited, 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, South Korea
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22
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Wenderott JK, Dong BX, Green PF. Morphological design strategies to tailor out-of-plane charge transport in conjugated polymer systems for device applications. Phys Chem Chem Phys 2021; 23:27076-27102. [PMID: 34571525 DOI: 10.1039/d1cp02476k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The transport of charge carriers throughout an active conjugated polymer (CP) host, characterized by a heterogeneous morphology of locally varying degrees of order and disorder, profoundly influences the performance of CP-based electronic devices, including diodes, photovoltaics, sensors, and supercapacitors. Out-of-plane charge carrier mobilities (μout-of-plane) across the bulk of the active material host and in-plane mobilities (μin-plane) parallel to a substrate are highly sensitive to local morphological features along their migration pathways. In general, the magnitudes of μout-of-plane and μin-plane are very different, in part because these carriers experience different morphological environments along their migration pathways. Suppressing the impact of variations in the morphological order/disorder on carrier migration remains an important challenge. While much is known about μin-plane and its optimization for devices, the current challenges are associated with μout-of-plane and its optimization for device performance. Therefore, this review is devoted to strategies for improving μout-of-plane in neat CP films and the implications for more complex systems, such as D:A blends which are relevant to OPV devices. The specific strategies discussed for improving μout-of-plane include solvent/field processing methods, chemical modification, thickness confinement, chemical additives, and different post-annealing strategies, including annealing with supercritical fluids. This review leverages the most recent fundamental understanding of mechanisms of charge transport and connections to morphology, identifying robust design strategies for targeted improvements of μout-of-plane.
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Affiliation(s)
- J K Wenderott
- Department of Materials Science and Engineering, Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ban Xuan Dong
- Department of Materials Science and Engineering, Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Peter F Green
- Department of Materials Science and Engineering, Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, USA.,National Renewable Energy Laboratory, 15013 Denver W Pkwy, Golden, CO 80401, USA.
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23
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Haghighat Bayan MA, Afshar Taromi F, Lanzi M, Pierini F. Enhanced efficiency in hollow core electrospun nanofiber-based organic solar cells. Sci Rep 2021; 11:21144. [PMID: 34707121 PMCID: PMC8551186 DOI: 10.1038/s41598-021-00580-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/14/2021] [Indexed: 11/09/2022] Open
Abstract
Over the last decade, nanotechnology and nanomaterials have attracted enormous interest due to the rising number of their applications in solar cells. A fascinating strategy to increase the efficiency of organic solar cells is the use of tailor-designed buffer layers to improve the charge transport process. High-efficiency bulk heterojunction (BHJ) solar cells have been obtained by introducing hollow core polyaniline (PANI) nanofibers as a buffer layer. An improved power conversion efficiency in polymer solar cells (PSCs) was demonstrated through the incorporation of electrospun hollow core PANI nanofibers positioned between the active layer and the electrode. PANI hollow nanofibers improved buffer layer structural properties, enhanced optical absorption, and induced a more balanced charge transfer process. Solar cell photovoltaic parameters also showed higher open-circuit voltage (+ 40.3%) and higher power conversion efficiency (+ 48.5%) than conventional architecture BHJ solar cells. Furthermore, the photovoltaic cell developed achieved the highest reported efficiency value ever reached for an electrospun fiber-based solar cell (PCE = 6.85%). Our results indicated that PANI hollow core nanostructures may be considered an effective material for high-performance PSCs and potentially applicable to other fields, such as fuel cells and sensors.
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Affiliation(s)
- Mohammad Ali Haghighat Bayan
- Department of Biosystems and Soft Matter, Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106, Warsaw, Poland
- Department of Polymer Engineering, Amirkabir University of Technology, 15875-4414, Tehran, Iran
| | - Faramarz Afshar Taromi
- Department of Polymer Engineering, Amirkabir University of Technology, 15875-4414, Tehran, Iran
| | - Massimiliano Lanzi
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum - University of Bologna, 40136, Bologna, Italy
| | - Filippo Pierini
- Department of Biosystems and Soft Matter, Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106, Warsaw, Poland.
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24
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Gao H, Yu R, Ma Z, Gong Y, Zhao B, Lv Q, Tan Z. Recent advances of organometallic complexes in emerging photovoltaics. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210592] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Huaizhi Gao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
| | - Runnan Yu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
| | - Zongwen Ma
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
| | - Yongshuai Gong
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
| | - Biao Zhao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
| | - Qianglong Lv
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
| | - Zhan'ao Tan
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Materials Science and Engineering, State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical Technology Beijing China
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25
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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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26
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Schwaiger DM, Lohstroh W, Müller-Buschbaum P. The Influence of the Blend Ratio, Solvent Additive, and Post-production Treatment on the Polymer Dynamics in PTB7:PCBM Blend Films. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dominik M. Schwaiger
- Physik-Department, Technische Universität München, Lehrstuhl für Funktionelle Materialien James-Franck-Straße 1, 85748 Garching, Germany
| | - Wiebke Lohstroh
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstraße 1, 85748 Garching, Germany
| | - Peter Müller-Buschbaum
- Physik-Department, Technische Universität München, Lehrstuhl für Funktionelle Materialien James-Franck-Straße 1, 85748 Garching, Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstraße 1, 85748 Garching, Germany
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27
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Effect of extending fluorinated thiophene π-bridges of BDT- and TT-based polymers for nonfullerene organic solar cells. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123898] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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28
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Investigation of polyaniline doped with camphorsulfonic acid in chloroform solution as a hole transporting layer in PTB7: PCBM and perovskite-based solar cells. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138264] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Nakano M, Takahara A, Genda K, Shahiduzzaman M, Karakawa M, Taima T, Takahashi K. Selective Extraction of Nonfullerene Acceptors from Bulk-Heterojunction Layer in Organic Solar Cells for Detailed Analysis of Microstructure. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2107. [PMID: 33919451 PMCID: PMC8122272 DOI: 10.3390/ma14092107] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 01/31/2023]
Abstract
Detailed analyses of the microstructures of bulk-heterojunction (BHJ) layers are important for the development of high-performance photovoltaic organic solar cells (OSCs). However, analytical methods for BHJ layer microstructures are limited because BHJ films are composed of a complex mixture of donor and acceptor materials. In our previous study on the microstructure of a BHJ film composed of donor polymers and fullerene-based acceptors, we analyzed donor polymer-only films after selectively extracting fullerene-based acceptors from the film by atomic force microscopy (AFM). Not only was AFM suitable for a clear analysis of the morphology of the donor polymers in the BHJ film, but it also allowed us to approximate the acceptor morphology by analyzing the pores in the extracted films. Herein we report a method for the selective extraction of nonfullerene acceptors (NFAs) from a BHJ layer in OSCs and provide a detailed analysis of the remaining BHJ films based upon AFM. We found that butyl glycidyl ether is an effective solvent to extract NFAs from BHJ films without damaging the donor polymer films. By using the selective extraction method, the morphologies of NFA-free BHJ films fabricated under various conditions were studied in detail. The results may be useful for the optimization of BHJ film structures composed of NFAs and donor polymers.
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Affiliation(s)
- Masahiro Nakano
- Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa 920-1192, Japan; (A.T.); (K.G.); (M.K.); (T.T.)
| | - Akira Takahara
- Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa 920-1192, Japan; (A.T.); (K.G.); (M.K.); (T.T.)
| | - Kenji Genda
- Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa 920-1192, Japan; (A.T.); (K.G.); (M.K.); (T.T.)
| | - Md. Shahiduzzaman
- Nanomaterials Research Institute (NanoMaRi), Kanazawa University, Ishikawa 920-1192, Japan;
| | - Makoto Karakawa
- Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa 920-1192, Japan; (A.T.); (K.G.); (M.K.); (T.T.)
- Nanomaterials Research Institute (NanoMaRi), Kanazawa University, Ishikawa 920-1192, Japan;
- Institute for Frontier Science Initiative (InFiniti), Kanazawa University, Ishikawa 920-1192, Japan
| | - Tetsuya Taima
- Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa 920-1192, Japan; (A.T.); (K.G.); (M.K.); (T.T.)
- Nanomaterials Research Institute (NanoMaRi), Kanazawa University, Ishikawa 920-1192, Japan;
- Institute for Frontier Science Initiative (InFiniti), Kanazawa University, Ishikawa 920-1192, Japan
| | - Kohshin Takahashi
- Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa 920-1192, Japan; (A.T.); (K.G.); (M.K.); (T.T.)
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30
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Jiao Z, Jiang T, Zhou Z, Qin C, Long J, Liu Y, Jiang Y. Identification of a bridge-specific intramolecular exciton dissociation pathway in donor-π-acceptor alternating conjugated polymers. NANOSCALE RESEARCH LETTERS 2021; 16:51. [PMID: 33745078 PMCID: PMC7981365 DOI: 10.1186/s11671-021-03507-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
Intramolecular exciton dissociation is critical for high efficient mobile charge carrier generations in organic solar cells. Yet despite much attention, the effects of π bridges on exciton dissociation dynamics in donor-π-acceptor (D-π-A) alternating conjugated polymers remain still unclear. Here, using a combination of femtosecond time-resolved transient absorption (TA) spectroscopy and steady-state spectroscopy, we track ultrafast intramolecular exciton relaxation dynamics in three D-π-A alternating conjugated polymers which were synthesized by Qin's group and named HSD-A, HSD-B, HSD-C. It is found that the addition of thiophene unit as π bridges will lead to the red shift of steady-state absorption spectrum. Importantly, we reveal the existence of a new intramolecular exciton dissociation pathway mediated by a bridge-specific charge transfer (CT') state with the TA fingerprint peak at 1200 nm in π-bridged HSD-B and HSD-C. This CT' state results in higher electron capture rates for HSD-B and HSD-C as compared to HSD-A. Depending on the proportion of CT' state and nongeminate recombination are important step for the understanding of high power conversion efficiencies in HSD-B than in HSD-C. We propose that this bridge-specific exciton dissociation pathway plays an important role in ultrafast intramolecular exciton dissociation of organic photovoltaic material D-π-A alternating conjugated polymers.
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Affiliation(s)
- Zhaoyong Jiao
- Henan Key Laboratory of Infrared Materials and Spectrum Measures and Applications, School of Physics, Henan Normal University, Xinxiang, 453007, People's Republic of China
| | - Tingting Jiang
- Henan Key Laboratory of Infrared Materials and Spectrum Measures and Applications, School of Physics, Henan Normal University, Xinxiang, 453007, People's Republic of China
| | - Zhongpo Zhou
- Henan Key Laboratory of Infrared Materials and Spectrum Measures and Applications, School of Physics, Henan Normal University, Xinxiang, 453007, People's Republic of China
| | - Chaochao Qin
- Henan Key Laboratory of Infrared Materials and Spectrum Measures and Applications, School of Physics, Henan Normal University, Xinxiang, 453007, People's Republic of China.
| | - Jinyou Long
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, People's Republic of China.
| | - Yufang Liu
- Henan Key Laboratory of Infrared Materials and Spectrum Measures and Applications, School of Physics, Henan Normal University, Xinxiang, 453007, People's Republic of China
| | - Yuhai Jiang
- Henan Key Laboratory of Infrared Materials and Spectrum Measures and Applications, School of Physics, Henan Normal University, Xinxiang, 453007, People's Republic of China.
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, People's Republic of China.
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31
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Liu H, Zhu Z, Li H, Fan W, Ning K, Su C, Ren J, Wang L. Copolymers based on trialkylsilylethynyl-phenyl substituted benzodithiophene building blocks for efficient organic solar cells. NEW J CHEM 2021. [DOI: 10.1039/d1nj03555j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Trialkylsilylethynyl-phenyl was explored as a side chain to construct a benzodithiophene-containing polymer that demonstrated a PCE of 7.81% in organic solar cells.
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Affiliation(s)
- Haifen Liu
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
| | - Zixuan Zhu
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
| | - Huafeng Li
- Lucky Film Co., Ltd, Baoding 071054, China
| | - Weili Fan
- College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Kaihua Ning
- College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Chao Su
- College of Physics Science and Technology, Hebei University, Baoding 071002, China
| | - Jingpeng Ren
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
| | - Lixin Wang
- College of Physics Science and Technology, Hebei University, Baoding 071002, China
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32
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Zhang X, Yao C, Zhao J, Ali MU, Li A, Shen CKF, Yan C, He Y, Miao J, Meng H. Molecular tailoring of trifluoromethyl-substituted conjugated polymers for efficient organic solar cells. Polym Chem 2021. [DOI: 10.1039/d1py00177a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports a series of novel trifluoromethylated polymers as efficient donor materials for high-performance OSCs.
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Affiliation(s)
- Xueqiao Zhang
- School of Advanced Materials
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
| | - Chao Yao
- School of Advanced Materials
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
| | - Jiajun Zhao
- School of Advanced Materials
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
| | - Muhammad Umair Ali
- Tsinghua-Berkeley Shenzhen Institute (TBSI)
- Tsinghua University
- Shenzhen 518055
- China
| | - Aiyuan Li
- School of Advanced Materials
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
| | | | - Chaoyi Yan
- School of Advanced Materials
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
| | - Yaowu He
- School of Advanced Materials
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
| | - Jingsheng Miao
- School of Advanced Materials
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
| | - Hong Meng
- School of Advanced Materials
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
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33
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Yang T, He Y, Cheng Y, Gao X, Wu Y, Yuan W, Tao Y. Cyclometalated Ir(III) complexes as potential electron acceptors for organic solar cells. Dalton Trans 2021; 50:9871-9880. [PMID: 34195721 DOI: 10.1039/d1dt01136g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclometalated iridium(iii) complexes have been investigated as promising electron donor (D) materials in organic solar cells (OSCs) due to their unique octahedral configuration for optimized morphology and their significantly long lifetimes potentially for enhanced exciton dissociation. However, the application as electron acceptor (A) materials has never been reported. In order to fill this blank, herein, two cyclometalated heteroleptic Ir complexes, TRIr and 2TRIr, based on electron donating-accepting type organic ligands with different π-conjugation lengths are reported as electron acceptor materials in comparison with their corresponding main organic ligands. The two Ir complexes exhibit suitable HOMO/LUMO energy levels of -5.55/-3.47 eV and -5.44/-3.48 eV, which are ∼0.1 eV higher in the HOMO and ∼0.15 eV deeper in the LUMO than the TR and 2TR ligands, respectively. 2TRIr with extended ligand π-conjugation displays a poor triplet feature, while TRIr demonstrates obvious metal-to-ligand charge transfer (MLCT) transition absorption, with a triplet component photoluminescence (PL) lifetime of 85 ns in neat films. When blended with PBDB-T in bulk heterojunction (BHJ) OSCs, the power conversion efficiencies (PCEs) are 2-3 times higher than their relevant ligands, with values of 1.20% and 1.62% for TRIr and 2TRIr, and 0.58% and 0.47% for the TR and 2TR ligand-based devices, respectively. TRIr and 2TRIr based active layer blends exhibit poorer hole and electron mobilities, whereas compared with their relatively linear planar ligands, both of the two octahedral Ir complexes exhibit an optimized surface morphology for less bimolecular recombination and more efficient exciton dissociation, thus contributing to improved photovoltaic performance.
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Affiliation(s)
- Tianjian Yang
- Key Lab for Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
| | - Yinming He
- Key Lab for Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
| | - Yang Cheng
- Key Lab for Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
| | - Xuyu Gao
- Key Lab for Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
| | - Yijing Wu
- Key Lab for Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
| | - Wenbo Yuan
- Key Lab for Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
| | - Youtian Tao
- Key Lab for Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, People's Republic of China.
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34
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Rubio Arias JJ, Mota IC, Vieira Marques MDF. Synthesis of thiophene‐benzodithiophene wide bandgap polymer and
GIWAXS
evaluation of thermal annealing with potential for application in ternary polymer solar cells. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.5187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jose Jonathan Rubio Arias
- Universidade Federal do Rio de Janeiro, Instituto de Macromoléculas Eloisa Mano Rio de Janeiro Brazil
| | - Isabela Custódio Mota
- Universidade Federal do Rio de Janeiro, Instituto de Macromoléculas Eloisa Mano Rio de Janeiro Brazil
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35
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Elacqua E, Koehler SJ, Hu J. Electronically Governed ROMP: Expanding Sequence Control for Donor–Acceptor Conjugated Polymers. Synlett 2020. [DOI: 10.1055/s-0040-1707180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Controlling the primary sequence of synthetic polymers remains a grand challenge in chemistry. A variety of methods that exert control over monomer sequence have been realized wherein differential reactivity, pre-organization, and stimuli-response have been key factors in programming sequence. Whereas much has been established in nonconjugated systems, π-extended frameworks remain systems wherein subtle structural changes influence bulk properties. The recent introduction of electronically biased ring-opening metathesis polymerization (ROMP) extends the repertoire of feasible approaches to prescribe donor–acceptor sequences in conjugated polymers, by enabling a system to achieve both low dispersity and controlled polymer sequences. Herein, we discuss recent advances in obtaining well-defined (i.e., low dispersity) polymers featuring donor–acceptor sequence control, and present our design of an electronically ambiguous (4-methoxy-1-(2-ethylhexyloxy) and benzothiadiazole-(donor–acceptor-)based [2.2]paracyclophanediene monomer that undergoes electronically dictated ROMP. The resultant donor–acceptor polymers were well-defined (Đ = 1.2, Mn > 20 k) and exhibited lower energy excitation and emission in comparison to ‘sequence-ill-defined’ polymers. Electronically driven ROMP expands on prior synthetic methods to attain sequence control, while providing a promising platform for further interrogation of polymer sequence and resultant properties.1 Introduction to Sequence Control2 Sequence Control in Polymers3 Multistep-Synthesis-Driven Sequence Control4 Catalyst-Dictated Sequence Control5 Electronically Governed Sequence Control6 Conclusions
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36
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Keshtov ML, Kuklin SA, Dou C, Koukaras EN, Singhal R, Malhotra P, Sharma GD. Enhancement of photovoltaic efficiency through fine adjustment of indacene‐based non‐fullerene acceptor by minimal chlorination for polymer solar cells. NANO SELECT 2020. [DOI: 10.1002/nano.202000027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Mukhamed L. Keshtov
- Institute of Organoelement Compounds of the Russian Academy of Sciences Moscow 119991 Russian Federation
| | - Sergei A. Kuklin
- Institute of Organoelement Compounds of the Russian Academy of Sciences Moscow 119991 Russian Federation
| | - Chuandong Dou
- Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
| | - Emmanuel N. Koukaras
- Laboratory of Quantum and Computational Chemistry Department of Chemistry Aristotle University of Thessaloniki Thessaloniki GR‐54124 Greece
| | - Rahul Singhal
- Department of Physics Malviya National Institute of Technology Jaipur Rajasthan 302017 India
| | - Prateek Malhotra
- Department of Physics The LNM Institute for Information Technology Jaipur Rajasthan 302017 India
| | - Ganesh D. Sharma
- Department of Physics The LNM Institute for Information Technology Jaipur Rajasthan 302017 India
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37
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Yue Q, Liu W, Zhu X. n-Type Molecular Photovoltaic Materials: Design Strategies and Device Applications. J Am Chem Soc 2020; 142:11613-11628. [PMID: 32460485 DOI: 10.1021/jacs.0c04084] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The use of photovoltaic technologies has been regarded as a promising approach for converting solar energy to electricity and mitigating the energy crisis, and among these, organic photovoltaics (OPVs) have attracted broad interest because of their solution processability, flexibility, light weight, and potential for large-area processing. The development of OPV materials, especially electron acceptors, has been one of the focuses in recent years. Compared with fullerene derivates, n-type non-fullerene molecules have some unique merits, such as synthetic simplicity, high tunability of the absorption and energy levels, and small energy loss. In the last 5 years, organic solar cells based on n-type non-fullerene molecules have achieved a significant breakthrough in the power conversion efficiency from approximately 4% to over 17%, which is superior to those of fullerene-based solar cells; meanwhile, n-type non-fullerene molecules have created brand new opportunities for the application of OPVs in some special situations. This Perspective analyzes the key design strategies of high-performance n-type molecular photovoltaic materials and highlights instructive examples of their various applications, including in ternary and tandem solar cells, high-efficiency semitransparent solar cells for power-generating building facades and windows, and indoor photovoltaics for driving low-power-consumption devices. Moreover, to accelerate the pace toward commercialization of OPVs, the existing challenges and future directions are also reviewed from the perspectives of efficiency, stability, and large-area fabrication.
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Affiliation(s)
- Qihui Yue
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wuyue Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xiaozhang Zhu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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38
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Du J, Hu K, Meng L, Angunawela I, Zhang J, Qin S, Liebman‐Pelaez A, Zhu C, Zhang Z, Ade H, Li Y. High‐Performance All‐Polymer Solar Cells: Synthesis of Polymer Acceptor by a Random Ternary Copolymerization Strategy. Angew Chem Int Ed Engl 2020; 59:15181-15185. [DOI: 10.1002/anie.202005357] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Jiaqi Du
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
| | - Ke Hu
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
| | - Lei Meng
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Indunil Angunawela
- Department of Physics and Organic and Carbon Electronics Lab (ORaCEL) North Carolina State University Raleigh NC 27695 USA
| | - Jinyuan Zhang
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Shucheng Qin
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
| | - Alex Liebman‐Pelaez
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Chenhui Zhu
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Zhanjun Zhang
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
| | - Harald Ade
- Department of Physics and Organic and Carbon Electronics Lab (ORaCEL) North Carolina State University Raleigh NC 27695 USA
| | - Yongfang Li
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
- Laboratory of Advanced Optoelectronic Materials College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China
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Du J, Hu K, Meng L, Angunawela I, Zhang J, Qin S, Liebman‐Pelaez A, Zhu C, Zhang Z, Ade H, Li Y. High‐Performance All‐Polymer Solar Cells: Synthesis of Polymer Acceptor by a Random Ternary Copolymerization Strategy. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005357] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiaqi Du
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
| | - Ke Hu
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
| | - Lei Meng
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Indunil Angunawela
- Department of Physics and Organic and Carbon Electronics Lab (ORaCEL) North Carolina State University Raleigh NC 27695 USA
| | - Jinyuan Zhang
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Shucheng Qin
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
| | - Alex Liebman‐Pelaez
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Chenhui Zhu
- Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Zhanjun Zhang
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
| | - Harald Ade
- Department of Physics and Organic and Carbon Electronics Lab (ORaCEL) North Carolina State University Raleigh NC 27695 USA
| | - Yongfang Li
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Science University of Chinese Academy of Sciences Beijing 100049 China
- Laboratory of Advanced Optoelectronic Materials College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China
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40
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Effects of Intra- and Interchain Interactions on Exciton Dynamics of PTB7 Revealed by Model Oligomers. Molecules 2020; 25:molecules25102441. [PMID: 32456192 PMCID: PMC7287679 DOI: 10.3390/molecules25102441] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/16/2020] [Accepted: 05/22/2020] [Indexed: 11/28/2022] Open
Abstract
Recent studies have shown that molecular aggregation structures in precursor solutions of organic photovoltaic (OPV) polymers have substantial influence on polymer film morphology, exciton and charge carrier transport dynamics, and hence, the resultant device performance. To distinguish photophysical impacts due to increasing π-conjugation from chain lengthening and π–π stacking from single/multi chain aggregation in solution and film, we used oligomers of a well-studied charge transfer polymer PTB7 with different lengths as models to reveal intrinsic photophysical properties of a conjugated segment in the absence of inter-segment aggregation. In comparison with previously studied photophysical properties in polymeric PTB7, we found that oligomer dynamics are dominated by a process of planarization of the conjugated backbone into a quinoidal structure that resembles the self-folded polymer and that, when its emission is isolated, this quinoidal excited state resembling the planar polymer chain exhibits substantial charge transfer character via solvent-dependent emission shifts. Furthermore, the oligomers distinctly lack the long-lived charge separated species characteristic of PTB7, suggesting that the progression from charge transfer character in isolated chains to exciton splitting in neat polymer solution is modulated by the interchain interactions enabled by self-folding.
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Je HI, Shin EY, Lee KJ, Ahn H, Park S, Im SH, Kim YH, Son HJ, Kwon SK. Understanding the Performance of Organic Photovoltaics under Indoor and Outdoor Conditions: Effects of Chlorination of Donor Polymers. ACS APPLIED MATERIALS & INTERFACES 2020; 12:23181-23189. [PMID: 32323523 DOI: 10.1021/acsami.0c02712] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Understanding the effects of the chemical structures of donor polymers on the photovoltaic properties of their corresponding organic photovoltaic (OPV) devices under various light-intensity conditions is important for improving the performance of these devices. We synthesized a series of copolymers based on poly[(2,6-(4,8-bis(5-(2-thioethylhexyl)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-TS) and studied the effects of chlorine substitution of its thiophene-substituted benzodithiophene (BDT-Th) unit on its photovoltaic properties. Chlorination of the polymer resulted in a bulk heterojunction (BHJ) morphology optimized for efficient charge transport with suppressed leakage current and an increased open-circuit voltage of the OPV device; this optimization led to a remarkable enhancement of the OPV device's power conversion efficiency (PCE) not only under the condition of 1 sun illumination but also under a low light intensity mimicking indoor light; the PCE increased from 8.7% for PBDB-TS to ∼13% for the chlorinated polymers, PBDB-TS-3Cl, and PBDB-TS-4Cl under the 1 sun illumination condition and from 5.3% for PBDB-TS to 21.7% for PBDB-TS-4Cl under 500 lx fluorescence illuminance. Interestingly, although the OPV PCEs under 1 sun illumination were independent of the position of chlorine substitution onto the polymer, PBDB-TS-4Cl exhibited better performance under simulated indoor light than its derivative PBDB-TS-3Cl. Our results demonstrate that efficient light absorption and charge-carrier generation play key roles in achieving high OPV efficiency under low-light-intensity conditions.
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Affiliation(s)
- Hwan-Il Je
- Department of Materials Engineering and Convergence Technology and ERI, Gyeongsang National University, Jinju 660-701, Republic of Korea
| | - Eul-Yong Shin
- Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Keun Jun Lee
- Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- Department of Chemical and Biological Engineering, Korea University, Seoul 02792, Republic of Korea
| | - Hyungju Ahn
- Pohang Accelerator Laboratory, Kyungbuk, Pohang 37673, Republic of Korea
| | - Sungmin Park
- Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Sang Hyuk Im
- Department of Chemical and Biological Engineering, Korea University, Seoul 02792, Republic of Korea
| | - Yun-Hi Kim
- Department of Chemistry, Gyeongsang National University and RIGET, 900, Gajwa-dong, Jinju 660-701, Republic of Korea
| | - Hae Jung Son
- Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- KU-KIST Graduate School of Energy and Environment, Korea University, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Soon-Ki Kwon
- Department of Materials Engineering and Convergence Technology and ERI, Gyeongsang National University, Jinju 660-701, Republic of Korea
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42
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Zhang Y, Shao Y, Wei Z, Zhang L, Hu Y, Chen L, Chen S, Yuan Z, Chen Y. "Double-Acceptor-Type" Random Conjugated Terpolymer Donors for Additive-Free Non-Fullerene Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:20741-20749. [PMID: 32286044 DOI: 10.1021/acsami.0c02862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Random conjugated terpolymers (RCTs) not only promote great comprehension and realization for the state-of-the-art highly effective non-fullerene organic solar cells (OSCs) but also offer a simple and practical synthetic strategy. However, the photovoltaic properties of RCTs yet lagged behind that of the donor-acceptor (D-A) alternating copolymer, especially in additive-free devices. Hence, we developed two feasible "double-acceptor-type" random conjugated terpolymers, PBDB-TAZ20 and PBDB-TAZ40. The additive-free OSCs based on PBDB-TAZ20:ITIC and PBDB-TAZ40:ITIC exhibit decent efficiencies of 12.34 and 11.27%, respectively, which both surpass the PBDB-T:ITIC-based device. For RCTs, the reasonably weakened crystallinity and the reduced phase separation degree are demonstrated to help in improving charge transport, reducing bimolecular recombination, and thus enhancing the photovoltaic performance of additive-free OSCs. The results imply that adding a third moiety into the D-A polymer donors provides a simple but efficient synthetic approach for high-performance OSCs.
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Affiliation(s)
- Youdi Zhang
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Yiming Shao
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Zhouyin Wei
- MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems, School of Energy & Power Engineering, Chongqing University, Chongqing 400044, China
| | - Lifu Zhang
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Yu Hu
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Lie Chen
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Shanshan Chen
- MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems, School of Energy & Power Engineering, Chongqing University, Chongqing 400044, China
| | - Zhongyi Yuan
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Yiwang Chen
- College of Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
- Institute of Advanced Scientific Research (iASR), Jiangxi Normal University, 99 Ziyang Avenue, Nanchang 330022, China
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43
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Tran DK, Kolhe NB, Hwang YJ, Kuzuhara D, Koganezawa T, Jenekhe SA. Effects of a Fluorinated Donor Polymer on the Morphology, Photophysics, and Performance of All-Polymer Solar Cells Based on Naphthalene Diimide-Arylene Copolymer Acceptors. ACS APPLIED MATERIALS & INTERFACES 2020; 12:16490-16502. [PMID: 32180406 DOI: 10.1021/acsami.0c01382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Naphthalene diimide (NDI)-biselenophene copolymer (PNDIBS), NDI-selenophene copolymer (PNDIS), and the fluorinated donor polymer PM6 were used to investigate how a fluorinated polymer component affects the morphology and performance of all-polymer solar cells (all-PSCs). Although the PM6:PNDIBS blend system exhibits a high open-circuit voltage (Voc = 0.925 V) and a desired low optical bandgap energy loss (Eloss = 0.475 eV), the overall power conversion efficiency (PCE) was 3.1%. In contrast, PM6:PNDIS blends combine a high Voc (0.967 V) with a high fill factor (FF = 0.70) to produce efficient all-PSCs with 9.1% PCE. Furthermore, the high-performance PM6:PNDIS all-PSCs could be fabricated by various solution processing approaches and at active layer thickness as high as 300 nm without compromising photovoltaic efficiency. The divergent photovoltaic properties of PNDIS and PNDIBS when paired respectively with PM6 are shown to originate from the starkly different blend morphologies and blend photophysics. Efficient PM6:PNDIS blend films were found to exhibit a vertical phase stratification along with lateral phase separation, while the molecular packing had a predominant face-on orientation. Bulk lateral phase separation with both face-on and edge-on molecular orientations featured in the poor-performing PM6:PNDIBS blend films. Enhanced charge photogeneration and suppressed geminate and bimolecular recombinations with 99% charge collection probability found in PM6:PNDIS blends strongly differ from the poor charge collection probability (66%) and high electron-hole pair recombination seen in PM6:PNDIBS. Our findings demonstrate that beyond the generally expected enhancement of Voc, a fluorinated polymer component in all-PSCs can also exert a positive or negative influence on photovoltaic performance via the blend morphology and blend photophysics.
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Affiliation(s)
- Duyen K Tran
- Department of Chemical Engineering and Department of Chemistry, University of Washington, Seattle, Washington 98195-1750, United States
| | - Nagesh B Kolhe
- Department of Chemical Engineering and Department of Chemistry, University of Washington, Seattle, Washington 98195-1750, United States
| | - Ye-Jin Hwang
- Department of Chemistry and Chemical Engineering, Inha University, 100 Inha-ro, Michuhol-gu, Incheon 22212, Republic of Korea
| | - Daiki Kuzuhara
- Faculty of Science and Engineering, Iwate University, 4-3-5 Ueda, Morioka, Morioka, Iwata 020-8551, Japan
| | - Tomoyuki Koganezawa
- Industry Application Division, Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - Samson A Jenekhe
- Department of Chemical Engineering and Department of Chemistry, University of Washington, Seattle, Washington 98195-1750, United States
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Chen J, Huang X, Cao Z, Liu S, Liang K, Liu J, Jiao X, Zhao J, Li Q, Cai YP. Pronounced Dependence of All-Polymer Solar Cells Photovoltaic Performance on the Alkyl Substituent Patterns in Large Bandgap Polymer Donors. Chemphyschem 2020; 21:908-915. [PMID: 32150322 DOI: 10.1002/cphc.202000176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Indexed: 11/07/2022]
Abstract
For all-polymer solar cells which are composed of polymer donors and polymer acceptors, the effect of alkyl side chains on photovoltaic performance is a matter of some debate, and this effect remains difficult to forecast. In this concise contribution, we demonstrate that three alkyls namely branched alkyl 2-butyloctyl (2BO), long linear alkyl n-dodecyl (C12), and double-short linear alkyl n-hexyls (DC6) incorporated into the side chains of large bandgap polymer donor PBDT-TTz can induce considerable, of significance, and different electronic, optical, and morphological parameters. Systematic studies shed light on the critical role of the double-short linear alkyl n-hexyls (DC6) in (i) producing large ionization potential value, (ii) increasing propensity of the polymer to order along the π-stacking direction, (iii) generating polymer crystallites with more preferential "face-on" orientation, consequently, (iv) improvement of carriers transportation, (v) suppression of charge recombination, (vi) reduction of energy loss in all-polymer devices. In parallel, we unearth that the PBDT-TTz with double-short linear alkyl n-hexyls (DC6) represents the highest efficiency of 8.3 %, whereas, the other two PBDT-TTz analogues (2BO, C12) yield efficiencies of less than 3 % in optimized all-polymer solar cells. Though branched or long linear alkyl side chains (2BO, C12) have been applied to provide the solution processability of conjugated polymers, motifs bearing multiple short linear alkyl substituents (DC6) are proved critical to the development of high performing polymers.
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Affiliation(s)
- Jiale Chen
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University (SCNU), Guangzhou, 510006, P. R. China
| | - Xuelong Huang
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, P. R. China
| | - Zhixiong Cao
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University (SCNU), Guangzhou, 510006, P. R. China
| | - Shengjian Liu
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University (SCNU), Guangzhou, 510006, P. R. China
| | - Kexin Liang
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University (SCNU), Guangzhou, 510006, P. R. China
| | - Jinhai Liu
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University (SCNU), Guangzhou, 510006, P. R. China
| | - Xuechen Jiao
- Department of Materials Science and Engineering, Monash University, Australian Synchrotron, Clayton, VIC, Australia
| | - Jiaji Zhao
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University (SCNU), Guangzhou, 510006, P. R. China
| | - Qingduan Li
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University (SCNU), Guangzhou, 510006, P. R. China
| | - Yue-Peng Cai
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, Guangdong Provincial Engineering Technology Research Center for Materials for Energy Conversion and Storage, South China Normal University (SCNU), Guangzhou, 510006, P. R. China
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45
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Han T, Liu Q, Guo Y, Jin G, Ding S, Yao M, Jiang C, Wang H, Huang X, Chang F. Phase Control Behavior of Lateral Polymer Photodetectors Using Strong Aggregation Bulk Heterojunction Film. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.201900474] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tao Han
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and ApplicationFujian University of Technology Fuzhou 350118 P. R. China
- Hunan Provincial Key Laboratory of Xiangnan Rare‐Precious Metals Compounds Research and Application Chenzhou 423000 P. R. China
| | - Qiao Liu
- School of Chemistry and EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Yanxi Guo
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Gui Jin
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Shufang Ding
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Min Yao
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Chunzhi Jiang
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Huanyou Wang
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
- Hunan Provincial Key Laboratory of Xiangnan Rare‐Precious Metals Compounds Research and Application Chenzhou 423000 P. R. China
| | - Xiaoyi Huang
- School of Electronic Information and Electrical EngineeringXiangnan University Chenzhou 423000 P. R. China
| | - Fa Chang
- Fujian Provincial Key Laboratory of Advanced Materials Processing and ApplicationFujian University of Technology Fuzhou 350118 P. R. China
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46
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Sun L, Zeng W, Xie C, Hu L, Dong X, Qin F, Wang W, Liu T, Jiang X, Jiang Y, Zhou Y. Flexible All-Solution-Processed Organic Solar Cells with High-Performance Nonfullerene Active Layers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907840. [PMID: 32091160 DOI: 10.1002/adma.201907840] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/14/2020] [Indexed: 06/10/2023]
Abstract
All-solution-processed organic solar cells (from the bottom substrate to the top electrode) are highly desirable for low-cost and ubiquitous applications. However, it is still challenging to fabricate efficient all-solution-processed organic solar cells with a high-performance nonfullerene (NF) active layer. Issues of charge extraction and wetting are persistent at the interface between the nonfullerene active layer and the printable top electrode (PEDOT:PSS). In this work, efficient all-solution-processed NF organic solar cells (from the bottom substrate to the top electrode) are reported via the adoption of a layer of hydrogen molybdenum bronze (HX MoO3 ) between the active layer and the PEDOT:PSS. The dual functions of HX MoO3 include: 1) its deep Fermi level of -5.44 eV can effectively extract holes from the active layer; and 2) the wetting issues of the PEDOT:PSS on the hydrophobic surface of the NF active layer can be solved. Importantly, fine control of the HX MoO3 composition during the synthesis is critical in obtaining processing orthogonality between HX MoO3 and the PEDOT:PSS. Flexible all-solution-processed NF organic solar cells with power conversion efficiencies of 11.9% and 10.3% are obtained for solar cells with an area of 0.04 and 1 cm2 , respectively.
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Affiliation(s)
- Lulu Sun
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Wenwu Zeng
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Cong Xie
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Lin Hu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xinyun Dong
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Fei Qin
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Wen Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Tiefeng Liu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xueshi Jiang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Youyu Jiang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yinhua Zhou
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
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47
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Reactive & Efficient: Organic Azides as Cross-Linkers in Material Sciences. Molecules 2020; 25:molecules25041009. [PMID: 32102403 PMCID: PMC7070646 DOI: 10.3390/molecules25041009] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 01/31/2020] [Accepted: 02/10/2020] [Indexed: 11/17/2022] Open
Abstract
The exceptional reactivity of the azide group makes organic azides a highly versatile family of compounds in chemistry and the material sciences. One of the most prominent reactions employing organic azides is the regioselective copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition with alkynes yielding 1,2,3-triazoles. Other named reactions include the Staudinger reduction, the aza-Wittig reaction, and the Curtius rearrangement. The popularity of organic azides in material sciences is mostly based on their propensity to release nitrogen by thermal activation or photolysis. On the one hand, this scission reaction is accompanied with a considerable output of energy, making them interesting as highly energetic materials. On the other hand, it produces highly reactive nitrenes that show extraordinary efficiency in polymer crosslinking, a process used to alter the physical properties of polymers and to boost efficiencies of polymer-based devices such as membrane fuel cells, organic solar cells (OSCs), light-emitting diodes (LEDs), and organic field-effect transistors (OFETs). Thermosets are also suitable application areas. In most cases, organic azides with multiple azide functions are employed which can either be small molecules or oligo- and polymers. This review focuses on nitrene-based applications of multivalent organic azides in the material and life sciences.
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48
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Yang C, Sun Y, Li Q, Liu K, Xue X, Huang Y, Ren K, Li L, Chen Y, Wang Z, Qu S, Wang Z. Nonfullerene Ternary Organic Solar Cell with Effective Charge Transfer between Two Acceptors. J Phys Chem Lett 2020; 11:927-934. [PMID: 31957447 DOI: 10.1021/acs.jpclett.9b03502] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High power conversion efficiency can be realized by using a ternary bulk heterojunction with complementary absorption spectra in organic solar cells. However, as the development of nonfullerene acceptors with a broad absorption spectrum makes the absorption efficiency of the photovoltaic devices close to optimal, such a strategy needs modifying. In particular, charge transfer between the two acceptors is necessary to be considered. Herein, we purposely design a ternary system based on PTB7-Th:COi8DFIC:ITIC-4F. Though the presence of ITIC-4F in PTB7-Th:COi8DFIC could not broaden the absorption spectrum obviously, the formed cascade-energy-level alignment is beneficial for promoting and balancing exciton separation and charge transport between the donor and two acceptors and even between the acceptors. Insights into the charge transport route in the completed system are provided via using the techniques including photoluminescence spectroscopy and pump-probe photoconductivity spectroscopy. This work provides a new idea for designing highly efficient ternary organic solar cells.
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Affiliation(s)
- Cheng Yang
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yang Sun
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Qicong Li
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Kong Liu
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Xiaodi Xue
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yanbin Huang
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Kuankuan Ren
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Long Li
- Qian Xuesen Laboratory of Space Technology , China Academy of Space Technology , No. 104 Youyi Road , Beijing 100094 , China
| | - Yonghai Chen
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Zhijie Wang
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Shengchun Qu
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Zhanguo Wang
- Key Laboratory of Semiconductor Materials Science , Institute of Semiconductors, Chinese Academy of Sciences & Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices , Beijing 100083 , China
- Center of Materials Science and Optoelectronics Engineering , University of Chinese Academy of Sciences , Beijing 100049 , China
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Song CE, Ham H, Noh J, Lee SK, Kang IN. Efficiency enhancement of a fluorinated wide-bandgap polymer for ternary nonfullerene organic solar cells. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122131] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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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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