An effective bilayer cathode buffer for highly efficient small molecule organic solar cells

被引：38

作者：

Lin, Hao-Wu ^{[1
]}

Kang, Hao-Wei ^{[1
]}

Huang, Zheng-Yu ^{[1
]}

Chen, Chang-Wen ^{[1
]}

Chen, Yi-Hong ^{[1
]}

Lin, Li-Yen ^{[2
]}

Lin, Francis ^{[2
]}

Wong, Ken-Tsung ^{[2
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

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

来源：

ORGANIC ELECTRONICS | 2012年 / 13卷 / 10期

关键词：

Organic photovoltaics; Cathode buffer; Electron transporting layer; Small molecule solar cells; POLYMER PHOTOVOLTAIC CELLS; OPEN-CIRCUIT VOLTAGE; FILL FACTOR; PERFORMANCE; TRANSITION;

D O I：

10.1016/j.orgel.2012.05.049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Novel organic/ultrathin low work function metal bilayer cathode buffers for small molecule organic solar cells are proposed. Ultrathin low work function metal layers possess a high built-in electric field for effective carrier extraction and a high cathode reflectivity for maximum absorption in the photoactive layers. This leads to a significant increase of short circuit current density and fill factor of cells. By integrating this bilayer cathode buffer with DTDCTB:C-60 small molecular heterojunction, the device exhibits a high power conversion efficiency of up to 5.28%, which is an improvement of 22% compared to a device with a traditional single organic layer buffer. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：1925 / 1929

页数：5

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