Investigation of optimum conditions for high-efficiency organic thin-film solar cells based on polymer blends

被引：42

作者：

Yamanari, Toshihiro ^{[1
]}

Taima, Tetsuya ^{[1
]}

Hara, Kohjiro ^{[1
]}

Saito, Kazuhiro ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Ctr Photovolta, Tsukuba, Ibaraki 3058568, Japan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2006年 / 182卷 / 03期

关键词：

organic thin-film solar cells; polythiophene; fullerene; bulk heterojunction; photocurrent response;

D O I：

10.1016/j.jphotochem.2006.03.031

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：

Organic thin-film solar cells based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C-61-buteric acid methyl ester (PCBM) blend system attracts most attention. We studied the effects of P3HT:PCBM blend composition and thermal annealing treatment on the device performance. P3HT:PCBM weight ratio mainly influenced short circuit current (J(SC)) and power conversion efficiency (PCE). For the cells with P3HT:PCBM ratio of 1:0.66 showed the maximum PCE of 1.4%. Thermal annealing improved the photovoltaic characteristics and we achieved PCE of 2.0% with the annealed device. Furthermore, we observed transient photocurrent responses of devices to solar simulated light (air mass 1.5 G, 100 mW/cm(2)) irradiation. Annealing treatment resulted in suppression of the decay of photocurrent, suggesting that carrier transport network was improved by thermal annealing. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：269 / 272

页数：4

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