A low band gap, solution processable oligothiophene with a dialkylated diketopyrrolopyrrole chromophore for use in bulk heterojunction solar cells

被引：275

作者：

Tamayo, Arnold Bernarte

Dang, Xuan-Dang

Walker, Bright

Seo, Junghwa

Kent, Tyler

Nguyen, Thuc-Quyen ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 10期

关键词：

current density; electron mobility; energy gap; hole mobility; infrared spectra; photoconductivity; polymer blends; polymer films; solar cells; ultraviolet spectra; visible spectra; ORGANIC PHOTOVOLTAICS; CORE; DERIVATIVES; MORPHOLOGY; DESIGN;

D O I：

10.1063/1.3086897

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bulk heterojunction solar cells are fabricated from blends of oligothiophene with a dialkylated diketopyrrolopyrrole chromophore:[6,6]-phenyl C-71 butyric acid methyl ester. Absorption and photocurrent of the films extend to 800 nm. A power conversion efficiency (PCE) of 3.0% is obtained under simulated 100 mW/cm(2) AM1.5 illumination with a 9.2 mA/cm(2) short-circuit current density and an open-circuit voltage of 0.75 V. The hole and electron mobilities in the 50:50 blend are fairly balanced, 1.0x10(-4) and 4.8x10(-4) cm(2)/V s, respectively. This is the highest PCE reported to date for solar cells using solution processable small molecules.

引用

页数：3

共 16 条

[1]

[Anonymous], 2003, ANGEW CHEM-GER EDIT, DOI DOI 10.1002/ANGE.200351647

[2] Electron and hole transport in poly(p-phenylene vinylene) devices [J].