Multi-functional stacked light-trapping structure for stabilizing and boosting solar-electricity efficiency of hydrogenated amorphous silicon solar cells

Wen Hsien Huang, Jia Min Shieh, Fu-Ming Pan, Chang Hong Shen, Jung Y. Huang, Tsung Ta Wu, Ming Hsuan Kao, Tzu Hsuan Hsiao, Peichen Yu, Hao-Chung Kuo, Ching Ting Lee

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8 Scopus citations

Abstract

A sandwiched light-trapping electrode structure, which consists of a capping aluminum-doped ZnO (AZO) layer, dispersed plasmonic Au-nanoparticles (Au-NPs), and a micro-structured transparent conductive substrate, is employed to stabilize and boost the conversion-efficiency of hydrogenated amorphous silicon (a-Si:H) solar cells. The conformal AZO ultrathin layer (5 nm) smoothened the Au-NP-dispersed electrode surface, thereby reducing defects across the AZO/a-Si:H interface and resulting in a high resistance to photo-degradation in the ultraviolet-blue photoresponse band. With the plasmonic light-trapping structure, the cell has a high conversion-efficiency of 10.1% and the photo-degradation is as small as 7%.

Original languageEnglish
Article number073107
JournalApplied Physics Letters
Volume103
Issue number7
DOIs
StatePublished - 12 Aug 2013

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