Thin-film encapsulation of indium-tin-oxide-free polymer solar cells by atomic layer deposition with an improvement on stability and efficiency

LI Kan; FAN Huanhuan; LI Haifeng; ZHEN Hongyu

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Thin-film encapsulation of indium-tin-oxide-free polymer solar cells by atomic layer deposition with an improvement on stability and efficiency

LI Kan,FAN Huanhuan,LI Haifeng *,ZHEN Hongyu

State key laboratory of Modern Optical Instrumentation, Zhejiang University

*Correspondence author

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Funding: National Natural Science Foundation of China （No.61007056）, Research Fund for the Doctoral Program of Higher Education of China（No.20100101120048）

Opened online: 6 January 2014

Accepted by: none

Citation: LI Kan,FAN Huanhuan,LI Haifeng.Thin-film encapsulation of indium-tin-oxide-free polymer solar cells by atomic layer deposition with an improvement on stability and efficiency[OL]. [ 6 January 2014] http://en.paper.edu.cn/en_releasepaper/content/4578240

Atomic layer deposition (ALD) technology is induced to encapsulate inverted indium-tin-oxide (ITO)-free polymer solar cells (IFSCs) with a structure of Al/TiOx /P3HT:PC61BM /PH1000. Al2O3 served as encapsulation layer is deposited by ALD on the light incident surface (PH1000 anode). The thickness of Al2O3 layer thus can be optimized through optical simulation to minimize light loss on IFSCs. With Al2O3 of 30 nm and active layer of 85 nm obtained from optical calculation, the ALD encapsulated IFSCs show much better device performance and higher stability than the glass-encapsulated IFSCs with active layer of 80 nm.

Keywords:solar energy; Atomic layer deposition; Optical optimization; Encapsulation; Lifetime

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