共 55 条
Understanding Morphology Compatibility for High-Performance Ternary Organic Solar Cells
被引:158
作者:
Mai, Jiangquan
[1
]
Lau, Tsz-Ki
[1
]
Li, Jun
[2
,3
]
Peng, Shih-Hao
[4
]
Hsu, Chain-Shu
[4
]
Jeng, U-Ser
[5
]
Zeng, Jianrong
[6
]
Zhao, Ni
[7
]
Xiao, Xudong
[1
]
Lu, Xinhui
[1
]
机构:
[1] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China
[2] Imperial Coll London, Dept Chem, London SW7 2AZ, England
[3] Imperial Coll London, Ctr Plast Elect, London SW7 2AZ, England
[4] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu, Taiwan
[5] Natl Synchrotron Radiat Res Ctr, 101 Hsin Ann Rd,Hsinchu Sci Pk, Hsinchu, Taiwan
[6] Shanghai Synchrotron Radiat Facil, 239 Zhangheng Rd, Shanghai, Peoples R China
[7] Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R China
关键词:
OPEN-CIRCUIT VOLTAGE;
POWER CONVERSION EFFICIENCY;
BULK-HETEROJUNCTION;
CONJUGATED POLYMER;
HIGH-MOBILITY;
MOLECULAR-ORIENTATION;
PHOTOVOLTAIC CELLS;
CONTROL AGENT;
FULLERENE;
BLEND;
D O I:
10.1021/acs.chemmater.6b02264
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Ternary organic solar cells are emerging as a promising strategy to enhance device power conversion efficiency by broadening the range of light absorption via the incorporation of additional light-absorbing components. However, how to find compatible materials that allow comparable loadings of each component remains a challenge. In this article, we focus on studying the donor polymer compatibilities in ternary systems from a morphological point of view. Four typical donor polymers with different chemical structures and absorption ranges were mutually combined to form six distinct ternary systems with fullerene derivative acceptors. Two compatible ternary systems were identified as showing significant improvements of efficiency from both binary control devices. Ternary morphologies were characterized by grazing incident X-ray scattering and correlated with device performance. We find that polymers that have strong lamellar interactions and relatively similar phase separation behaviors with the fullerene derivative are more likely to be compatible in ternary systems. This result provides guidance for polymer selection for future ternary organic solar cell research while relaxing the limitation of chemical structure similarity and greatly extends the donor candidate pool.
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页码:6186 / 6195
页数:10
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