Performance improvement of TiO2/P3HT solar cells using CuPc as a sensitizer

被引：65

作者：

Shen, Liang ^{[1
]}

Zhu, Guohui ^{[1
]}

Guo, Wenbin ^{[1
]}

Tao, Chen ^{[1
]}

Zhang, Xindong ^{[1
]}

Liu, Caixia ^{[1
]}

Chen, Weiyou ^{[1
]}

Ruan, Shengping

Zhong, Zhicheng

机构：

[1] Jilin Univ, State Key Lab Integrated Optoelect, Changchun 130023, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 07期

关键词：

LIGHT;

D O I：

10.1063/1.2884270

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work, a new type of TiO2/polymer solar cells was fabricated. The device structure was indium tin oxide titanium dioxide (TiO2)/ copper phthalocyanine (CuPc)/poly(3-hexylthiophene) (P3HT)/Au. In this architecture, TiO2 was designed to act as electron acceptor, and P3HT was electron donor. CuPc was used as a sensitizer to enhance photon absorption. The results show that by inserting CuPc between P3HT and TiO2 layers, the light absorption, excitons separation, and photocurrent under illumination are dramatically improved. The device has a short current density (J(SC)) of 1.15 mA/cm(2) and power conversion efficiency (eta) of 0.28% without CuPc layer. However, J(SC) and eta turn to be 2.22 mA/cm(2) and 0.66%, respectively, with a 20 nm thickness CuPc layer under air mass 1.5 global (AM1.5G) illumination with the intensity of 100 mW/cm(2). The performance improvement can be attributed to the higher carrier mobility and the stronger photon absorption using CuPc as a sensitizing layer. (c) 2008 American Institute of Physics.

引用

页数：3

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