Photovoltaic enhancement of organic solar cells by a bridged donor-acceptor block copolymer approach

被引：100

作者：

Sun, Sam-Shajing ^{[1
]}

Zhang, Cheng

Ledbetter, Abram

Choi, Soobum

Seo, Kang

Bonner, Carl E., Jr.

Drees, Martin

Sariciftci, Niyazi Serdar

机构：

[1] Norfolk State Univ, Mat Res Ctr, Norfolk, VA 23504 USA

[2] Johannes Kepler Univ Linz, Inst Organ Solar Cells, A-4040 Linz, Austria

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 04期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

D O I：

10.1063/1.2437100

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors show that a photovoltaic device composed of a -donor-bridge-acceptor-bridge- type block copolymer thin film exhibits a significant performance improvement over its corresponding donor/acceptor blend (V-oc increased from 0.14 to 1.10 V and J(sc) increased from 0.017 to 0.058 mA/cm(2)) under identical conditions, where donor is an alkyl derivatized poly-p-phenylenevinylene (PPV) conjugated block, acceptor is a sulfone-alkyl derivatized PPV conjugated block, and bridge is a nonconjugated and flexible unit. The authors attribute such improvement to the block copolymer intrinsic nanophase separation and molecular self-assembly that results in the reduction of the exciton and carrier losses. (c) 2007 American Institute of Physics.

引用

页数：3

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