Enhanced external quantum efficiency from Cu2ZnSn(S,Se)4 solar cells prepared from nanoparticle inks

Qu, Yongtao, Zoppi, Guillaume, Peter, Laurence, Beattie, Neil and Jourdain, Sophie (2018) Enhanced external quantum efficiency from Cu2ZnSn(S,Se)4 solar cells prepared from nanoparticle inks. Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes, 57 (8S3). 08RC01. ISSN 0021-4922

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Qu et al - Enhanced external quantum efficiency from Cu2ZnSn(S,Se)4 solar cells prepared from nanoparticle inks AAM.pdf - Accepted Version

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Official URL: http://doi.org/10.7567/JJAP.57.08RC01

Abstract

Cu2ZnSn(S,Se)4 (CZTSSe) thin film photovoltaic absorber layers are fabricated by selenizing Cu2ZnSnS4 (CZTS) nanoparticle thin films in a selenium rich atmosphere. The selenium vapor pressure is controlled to optimize the morphology and quality of the CZTSSe thin film. The largest grains are formed at the highest selenium vapor pressure of 226mbar. Integrating this photovoltaic absorber layer in a conventional thin film solar cell structure yields a champion short circuit current of 37.9mA/cm2 without an antireflection coating. This stems from an improved external quantum efficiency characteristic in the visible and near-infrared part of the solar spectrum. The physical basis of this improvement is qualitatively attributed to a substantial increase in the minority carrier diffusion length.

Item Type: Article
Subjects: H600 Electronic and Electrical Engineering
J500 Materials Technology not otherwise specified
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Paul Burns
Date Deposited: 05 Jun 2018 09:29
Last Modified: 11 Oct 2019 09:07
URI: http://nrl.northumbria.ac.uk/id/eprint/34476

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