The study of solvent additive effects in efficient polymer photovoltaics via impedance spectroscopy

被引：79

作者：

Yao, En-Ping ^{[1
,2
]}

Chen, Chun-Chao ^{[1
]}

Gao, Jing ^{[1
]}

Liu, Yongsheng ^{[1
]}

Chen, Qi ^{[1
]}

Cai, Min ^{[1
]}

Hsu, Wei-Chou ^{[2
]}

Hong, Ziruo ^{[1
]}

Li, Gang ^{[1
]}

Yang, Yang ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[2] Natl Cheng Kung Univ, Inst Microelect, 1 Univ Rd, Tainan 70101, Taiwan

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2014年 / 130卷

关键词：

OPV; Impedance spectroscopy; Bulk heterojuction; Interface; HETEROJUNCTION SOLAR-CELLS; NANOSCALE MORPHOLOGY; RECOMBINATION; LIFETIME; FILMS; TRANSPORT; MOBILITY;

D O I：

10.1016/j.solmat.2014.05.049

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

1, 8-Diiodooctane (DIO) has been known for its role of improving the polymer morphology and enhancing performance of polymer bulk heterojunction (BHJ) solar cell. In this work, the impedance spectroscopy was used to investigate the interface of poly(4,8-bis-alkyloxybenzo(1,2-b:4,5-b9dithiophene-2,6-diyl-alt- (alkyl thieno(3,4-b) thiophene-2-carboxylate)-2,6-diy1) (PBDTIT-C):PCOM in BHJ with DIO as additive. Based on our results, we were able to simulate the device into an equivalent circuit model, which allows us to conveniently analyze the organic/organic interfacial contact in the organic photovoltaic (OPV) device. Thus, we demonstrate that the impedance spectroscopy can an effective approach in characterizing the donor/acceptor interfaces, such that a direct correlation can be established between the morphology and the device performance of BHJ devices. (C)2014 Published by Elsevier B.V.

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页码：20 / 26

页数：7

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