Mechanism for dimethylformamide-treatment of poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) layer to enhance short circuit current of polymer solar cells

被引：29

作者：

Gong, Cheng ^{[1
,2
,3
]}

Yang, Hong Bin ^{[1
,2
,3
]}

Song, Qun Liang ^{[1
,2
,3
]}

Lu, Zhi Song ^{[1
,2
,3
]}

Li, Chang Ming ^{[1
,2
,3
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 63745, Singapore

[2] Nanyang Technol Univ, Ctr Adv Bionanosyst, Singapore 63745, Singapore

[3] Southwest Univ, Inst Clean Energy & Adv Mat, Chongqing 400715, Peoples R China

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2012年 / 100卷

关键词：

Polymer solar cell; DMF; Organic solvent; PEDOT: PSS; P3HT: PCBM; CONDUCTIVITY; MORPHOLOGY; FILM;

D O I：

10.1016/j.solmat.2011.12.006

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：

Dimethylformamide (DMF), an organic solvent, was used to treat the poly(3, 4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT: PSS) layer in poly(3-hexylthiophene) (P3HT): [6,6]-phenyl C61-butyric acid methyl ester (PCBM) polymer solar cells, resulting in significant enhancement of photocurrent and power conversion efficiency (PCE) improvement by 70%. Analyses of I-V characteristics reveal that the change in the active layer rather than that of the PEDOT: PSS buffer layer is ascribed to performance improvement. AFM images indicate that the roughness of PEDOT: PSS layer has been increased after the treatment. We argue that the protrudent PEDOT: PSS could serve as the centers for an initial crystallization of P3HT chains leading to a better alignment of P3HT: PCBM domains for a greatly enhanced photocurrent. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：115 / 119

页数：5

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