Dioctylfluorene-thiophene based conjugated copolymers for bulk heterojunction solar cells and enhanced power conversion efficiency via methanol treatment

被引：2
|
作者：
Chuang, Hung-Yi [1 ]
Hsu, Steve Lien-Chung [1 ]
Chen, Li-Chiun [1 ]
Sun, Yang [1 ]
Lin, Pi-Yun [2 ]
机构：
[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Res Ctr Energy Technol & Strategy, Ctr Micro Nano Sci & Technol, Tainan 70101, Taiwan
[2] Natl Cheng Kung Univ, Instrument Ctr, Tainan 70101, Taiwan
来源：
POLYMER INTERNATIONAL | 2015年 / 64卷 / 12期
关键词：
conjugated polymer; polymer solar cells; synthesis; copolymerization; DONOR-ACCEPTOR COPOLYMERS; PHOTOVOLTAIC PROPERTIES; ALTERNATING COPOLYMERS; SOLVENT TREATMENT; POLYMER; PERFORMANCE; ADDITIVES; DERIVATIVES; DESIGN; BANDGAP;
D O I：
10.1002/pi.4979
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Sensible design and synthesis of conjugating polymers is important to the development of polymer solar cells (PSCs). In this work, we synthesized and characterized two dioctylfluorene-thiophene based conjugated copolymers, PFTDPP and PFTpBT, having different acceptor groups on the backbone. The photovoltaic properties of the copolymers blended with 6,6-phenyl-C-61-butyric acid methyl ester (PC61BM) as an electron acceptor were obtained. The PSC based on a conventional device configuration ITO/PEDOT:PSS/ Polymer:PC61BM/LiF/Al showed power conversion efficiencies (PCEs) of 2.42% and 3.02% for PFTDPP and PFTpBT, respectively. Methanol treatment was introduced to further optimize device performance, and the solvent treatment gave a dramatic increase in PCE. The best PCEs could reach 4.25% and 4.20% after methanol treatment under AM 1.5G illumination with an intensity of 100 mW cm(-2) from a solar simulator. (c) 2015 Society of Chemical Industry
引用
收藏
页码：1779 / 1785
页数：7
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