https://doi.org/10.1140/epjp/s13360-025-06060-2
Regular Article
Determination of photovoltaic parameters of cobalt phosphosulfide (CoSP) based heterostructure: a new candidate in thin-film solar cells
1
Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Computer Science & Engineering, Wuhan Institute of Technology, 430205, Wuhan, People’s Republic of China
2
Department of Physics, University of Agriculture, 38040, Faisalabad, Pakistan
3
Department of Physics, Government College Women University Faisalabad, Faisalabad, Pakistan
4
Department of Physics, Superior University Faisalabad, Faisalabad, Pakistan
5
Department of Physics, Government College University Faisalabad, Faisalabad, Pakistan
Received:
7
April
2024
Accepted:
23
January
2025
Published online:
18
March
2025
This paper represents a theoretical analysis for simulating a pyrite-type CoSP-based (a new type of) solar cells by a n-CdS/p-CoSP heterostructure. The aim of this study is to investigate the feasibility of the CoSP as an absorber material in the field of thin-film solar cells. Subsequently, a relation between material parameters and characteristics of the cell has been established. The bandgap values (1.15 to 1.65 eV) of CoSP are extremely suitable for fabrication of solar cell as anticipated by Shockley–Queisser theory. Though, the cell performance reduces due to increase of the buffer layer thickness. The maximum absorber layer thickness was about 2 μm, beyond this value the efficiency not significantly increase. The optical absorption reduces due to the increase of absorber bandgap, which leads to decrease in open circuit voltage and photocurrent density. The cooperation between these two phenomena results maximum conversion efficiency of 
28% at bandgap value of 1.15 eV. All the simulation results provide an indication for the feasibility of CoSP as a new photovoltaic candidate. Therefore, experimental data have been called for the validity of our predictions.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
