Enhanced solar cell efficiency: copper zinc tin sulfide absorber thickness and defect density analysis

Copper zinc tin sulfide solar cell (CZTS), Cu 2 ZnSnS 4 -based solar cells have shown promising conversion efficiency because of their ease of variation in configurations. In this work, the architecture of a ZnO–Al/i–ZnO/n–CdS/CZTS/Mo solar cell was optimized by using Silvaco Atlas simulation softwa...

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Published inJournal of materials science. Materials in electronics Vol. 34; no. 24; p. 1699
Main Authors Devendra, K. C., Shah, Deb Kumar, Kumar, Subhash, Bhattarai, Nawraj, Adhikari, Dipak Raj, Khattri, Khim B., Akhtar, M. Shaheer, Umar, Ahmad, Ibrahim, Ahmed A., Alhamami, Mohsen A. M., Baskoutas, Sotirios, Yang, O.-Bong
Format Journal Article
LanguageEnglish
Published New York Springer US 01.08.2023
Springer Nature B.V
Subjects
Absorbers
Alternative energy sources
Artificial intelligence
Cadmium telluride
Characterization and Evaluation of Materials
Chemistry and Materials Science
Copper zinc tin sulfide
Defects
Density
Efficiency
Energy consumption
Energy conversion efficiency
Engineering
Materials Science
Optical and Electronic Materials
Photon absorption
Photovoltaic cells
Quantum dots
Renewable resources
Simulation
Solar cells
Solar energy
Temperature effects
Thickness
Zinc
Zinc oxide
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Summary:Copper zinc tin sulfide solar cell (CZTS), Cu 2 ZnSnS 4 -based solar cells have shown promising conversion efficiency because of their ease of variation in configurations. In this work, the architecture of a ZnO–Al/i–ZnO/n–CdS/CZTS/Mo solar cell was optimized by using Silvaco Atlas simulation software. In this simulation study, the thickness and defect density of the CZTS layer has been varied to achieve the highest efficiency of 26.58%, with Isc = 36.64 A and Voc = 0.909 V at a defect density of 1.8 × 10 12  cm −3 . Increase in the layer thickness of CZTS improves the photon absorption and cell efficiency. This study has evidenced the impact of defect density on the absorber layer, including photo-generation rate, recombination rate, and solar cell efficiency. By optimizing the device parameters, it has achieved a fill factor of 79.74% under AM 1.5 illumination, demonstrating the potential for low-cost, highly efficient CZTS solar cells.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-023-11125-y