Enhancement of photovoltaic performance by two-step dissolution processed photoactive blend in polymer solar cells

被引：6
作者：
Hu, Rong [1 ]
Cheng, Jiang [1 ]
Ni, Haitao [1 ]
Zhu, Jiang [1 ]
Liu, Hongdong [1 ]
Zhang, Wei [2 ]
Liu, Yurong [1 ]
Li, Lu [1 ]
Guo, Chaozhong [1 ]
Zheng, Kaibo [2 ,3 ]
机构：
[1] Chongqing Univ Arts & Sci, Res Inst New Mat Technol, Chongqing 402160, Peoples R China
[2] Lund Univ, Div Phys Chem, S-22100 Lund, Sweden
[3] Qatar Univ, Coll Engn, Gas Proc Ctr, POB 2713, Doha, Qatar
来源：
SCIENCE CHINA-MATERIALS | 2016年 / 59卷 / 10期
基金：
中国国家自然科学基金;
关键词：
polymer solar cells; photoactive layer; two-step dissolution; power conversion efficiency; SELF-ORGANIZATION; MORPHOLOGY; EFFICIENCY; POLY(3-HEXYLTHIOPHENE);
D O I：
10.1007/s40843-016-5128-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
based on poly(3-hexylthiophene):[6,6]-phenyl-C-61-butyric acid methyl ester (P3HT:PC61BM) and polythieno[3,4-b]-thiophene-co-benzodithiophene:[6,6]-phenyl-C-71-butyric acid methyl ester (PTB7:PC71BM) photovoltaic systems, by a two-step dissolution treatment of photoactive blends. Optical and morphological characterization revealed that the composition of the ordered polymer and donor/acceptor phase structure in the photoactive layer can be optimized using a two-step dissolution treatment. In addition, time-resolved photoluminescence indicated that exciton dissociation efficiency could be increased using this method. Current density-voltage (J-V) measurements showed that power conversion efficiencies (PCE) of the two-step dissolution treated devices were higher than those of one-step treated devices by 24% and 8% for P3HT:PC61BM and PTB7:PC71BM systems, respectively. Therefore, this two-step dissolution treatment further optimizes the performance of polymer solar cells.
引用
收藏
页码：842 / 850
页数：9
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