Design, Synthesis, and Photovoltaic Characterization of a Small Molecular Acceptor with an Ultra-Narrow Band Gap

被引:764
作者
Yao, Huifeng [1 ,2 ]
Cui, Yong [1 ,2 ]
Yu, Runnan [1 ,2 ]
Gao, Bowei [1 ,2 ]
Zhang, Hao [1 ,2 ]
Hou, Jianhui [1 ,2 ]
机构
[1] Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
关键词
fluorination; intramolecular charge transfer; non-fullerene acceptors; organic solar cells; ultra-narrow band gap; POLYMER SOLAR-CELLS; POWER CONVERSION EFFICIENCY; CIRCUIT CURRENT-DENSITY; HIGH-PERFORMANCE; FILL FACTOR; CONJUGATED POLYMERS; ENERGY-LOSSES; SIDE-CHAIN; ABSORPTION; ALKYLTHIO;
D O I
10.1002/anie.201610944
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The design of narrow band gap (NBG) donors or acceptors and their application in organic solar cells (OSCs) are of great importance in the conversion of solar photons to electrons. Limited by the inevitable energy loss from the optical band gap of the photovoltaic material to the open-circuit voltage of the OSC device, the improvement of the power conversion efficiency (PCE) of NBG-based OSCs faces great challenges. A novel acceptor-donor-acceptor structured non-fullerene acceptor is reported with an ultra-narrow band gap of 1.24 eV, which was achieved by an enhanced intramolecular charge transfer (ICT) effect. In the OSC device, despite a low energy loss of 0.509 eV, an impressive short-circuit current density of 25.3 mA cm(-2) is still recorded, which is the highest value for all OSC devices. The high 10.9% PCE of the NBG-based OSC demonstrates that the design and application of ultra-narrow materials have the potential to further improve the PCE of OSC devices.
引用
收藏
页码:3045 / 3049
页数:5
相关论文
共 44 条
[1]  
[Anonymous], 2011, ANGEW CHEM, V123, P9871
[2]   Molecular Design and Ordering Effects in π-Functional Materials for Transistor and Solar Cell Applications [J].
Beaujuge, Pierre M. ;
Frechet, Jean M. J. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (50) :20009-20029
[3]   Non-Fullerene Polymer Solar Cells Based on Alkylthio and Fluorine Substituted 2D-Conjugated Polymers Reach 9.5% Efficiency [J].
Bin, Haijun ;
Zhang, Zhi-Guo ;
Gao, Liang ;
Chen, Shanshan ;
Zhong, Lian ;
Xue, Lingwei ;
Yang, Changduk ;
Li, Yongfang .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (13) :4657-4664
[4]   Development of Novel Conjugated Donor Polymers for High-Efficiency Bulk-Heterojunction Photovoltaic Devices [J].
Chen, Junwu ;
Cao, Yong .
ACCOUNTS OF CHEMICAL RESEARCH, 2009, 42 (11) :1709-1718
[5]   Small-Bandgap Polymer Solar Cells with Unprecedented Short-Circuit Current Density and High Fill Factor [J].
Choi, Hyosung ;
Ko, Seo-Jin ;
Kim, Taehyo ;
Morin, Pierre-Olivier ;
Walker, Bright ;
Lee, Byoung Hoon ;
Leclerc, Mario ;
Kim, Jin Young ;
Heeger, Alan J. .
ADVANCED MATERIALS, 2015, 27 (21) :3318-3324
[6]  
Dai S., 2017, J AM CHEM SOC, V139, P1336, DOI [10.1021/jacs.6b12755, DOI 10.1021/JACS.6B12755]
[7]   Low-Bandgap Near-IR Conjugated Polymers/Molecules for Organic Electronics [J].
Dou, Letian ;
Liu, Yongsheng ;
Hong, Ziruo ;
Li, Gang ;
Yang, Yang .
CHEMICAL REVIEWS, 2015, 115 (23) :12633-12665
[8]  
Dou LT, 2012, NAT PHOTONICS, V6, P180, DOI [10.1038/NPHOTON.2011.356, 10.1038/nphoton.2011.356]
[9]   Recent development of push-pull conjugated polymers for bulk-heterojunction photovoltaics: rational design and fine tailoring of molecular structures [J].
Duan, Chunhui ;
Huang, Fei ;
Cao, Yong .
JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (21) :10416-10434
[10]  
Gasparini N, 2016, NAT ENERGY, V1, DOI [10.1038/NENERGY.2016.118, 10.1038/nenergy.2016.118]