Modulation of Donor-Acceptor Interface through Thermal Treatment for Efficient Bilayer Organic Solar Cells

被引：43

作者：

Kekuda, Dhananjaya ^{[1
]}

Huang, Jen-Hsien ^{[2
]}

Ho, Kuo-Chuan ^{[2
]}

Chu, Chih-Wei ^{[1
,3
]}

机构：

[1] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan

[2] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

[3] Natl Chiao Tung Univ, Dept Photon, Hsinchu 30013, Taiwan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 06期

关键词：

PHOTOVOLTAIC CELLS; POLYMER; POLYFLUORENE; PERFORMANCE; FILMS;

D O I：

10.1021/jp910023d

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：

In this article, we demonstrate the effect of donor-acceptor (D-A) interface on the performance of bilayer organic solar cells. Solution processing was used to develop liquid crystal poly(9,9'-dioctylfluorene-co-bithiophene) (F8T2) polymer films and variable morphology of the films was achieved by varying the annealing temperature. The morphology of the annealed active layers signature a well-aligned nanodomain feature with an interdegitated structure at 200 degrees C. The devices with bilayer configuration, ITO/PEDOT:PSS/F8T2/C-70/Al, have yielded a power conversion efficiency (PCE) of 3.4(+/- 0.2)% under 1 sun incident radiation. We attribute the high PCE to the increased D-A junction interface and balanced charge transport between electron/hole transport layers.

引用

页码：2764 / 2768

页数：5

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