Flattened light-scattering substrate in thin film silicon solar cells for improved infrared response

Hitoshi Sai, Yoshiaki Kanamori, Michio Kondo

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)

Abstract

Surface texturing is a technique commonly used to enhance light absorption in thin film silicon solar cells; it should be noted that highly textured substrates often induce structural defects in the active layer, which deteriorates the photovoltaic performance. In this paper, we propose a flattened light-scattering substrate (FLiSS) with a large refractive index contrast in plane as an approach to overcome this trade-off. A FLiSS composed of a two-dimensional ZnO grating and a Ag reflector is applied to μc-Si:H cells, in order to improve the spectral response in the infrared region while maintaining a high VOC and FF.

Original languageEnglish
Article number113502
JournalApplied Physics Letters
Volume98
Issue number11
DOIs
Publication statusPublished - 2011 Mar 14

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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