Decoupled textures for broadband absorption enhancement beyond Lambertian light trapping limit in thin-film silicon-based solar cells

Vismara, R.; Linssen, D.N.P.; Wang, Ken X.; Fan, Shanhui; Isabella, O.; Zeman, M.

doi:10.1109/PVSC.2018.8547858

Decoupled textures for broadband absorption enhancement beyond Lambertian light trapping limit in thin-film silicon-based solar cells

Conference paper (2018)

Authors

R. Vismara Photovoltaic Materials and Devices -

D.N.P. Linssen Student

Ken X. Wang Stanford University, Huazhong University of Science and Technology

Shanhui Fan Stanford University

O. Isabella Photovoltaic Materials and Devices -

M. Zeman Electrical Sustainable Energy

Department

Electrical Sustainable Energy

DOI: https://doi.org/10.1109/PVSC.2018.8547858

Thin-film silicon Light trapping Periodic gratings Barium silicide Lambertian scattering Nano-crystalline silicon

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Published Date

2018

Language

English

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Department

Electrical Sustainable Energy

Abstract

We present a modelling study of thin silicon based solar cells endowed with periodic and decoupled front/back textures. After careful optimization, the proposed device models exhibit absorption beyond the Lambertian light trapping limit for a wide range of light angles of incidence. The advanced light management scheme is applied to (nano)crystalline silicon solar cells, where the benefits of texturing the absorber rather than the supporting layers is clear and to barium (di)silicide solar cells, which could achieve an implied photocurrent densityof41.1 mA/cm2 for a thickness of only 2 \mum.

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