MoO3/Ag/Al/ZnO intermediate layer for inverted tandem polymer solar cells

doi:10.1088/1674-1056/23/3/038802

Abstract We report an MoO₃/Ag/Al/ZnO intermediate layer connecting two identical bulk heterojunction subcells with a poly(3-hexylthiophene) and [6,6]-phenyl-C61-butyric acid methyl ester (P3HT and PCBM) active layer for inverted tandem polymer solar cells. The highly transparent intermediate layer with an optimized thickness realizes an Ohmic contact between the two subcells for effective charge extraction and recombination. A maximum power conversion efficiency of 3.76% is obtained for the tandem cell under 100 mW/cm² illumination, which is larger than that of a single cell (3.15%). The open-circuit voltage of the tandem cell (1.18 V) approaches double that of the single cell (0.61 V).

Keywords: polymer solar cell inverted structure tandem solar cell intermediate layer

Received: 18 June 2013
Revised: 13 August 2013
Accepted manuscript online:

PACS:	88.40.jr	(Organic photovoltaics)
	88.40.-j	(Solar energy)
	84.60.Jt	(Photoelectric conversion)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2012CB933704), the Doctoral Foundation of the Ministry of Education of China (Grant No. 20100171110025), and the State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, China (Grant No. 2010-RC-3-1).

Corresponding Authors: Zhou Xiang
E-mail: stszx@mail.sysu.edu.cn

Cite this article:

Qing Jian (卿健), Zhong Zhen-Feng (钟镇锋), Liu Yong (刘勇), Li Bao-Jun (李宝军), Zhou Xiang (周翔) MoO₃/Ag/Al/ZnO intermediate layer for inverted tandem polymer solar cells 2014 Chin. Phys. B 23 038802

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MoO3/Ag/Al/ZnO intermediate layer for inverted tandem polymer solar cells

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MoO₃/Ag/Al/ZnO intermediate layer for inverted tandem polymer solar cells