Optimization and Performance Comparison of CZTS and CZTSe Thin Film Solar Cells

Document Type : Original Article

Authors

1 Department of Nanoelectronics engineering, Faculty of Advance Technologies, Shiraz University, Shiraz, Iran

2 Shiraz university

Abstract

In this paper, CZTS and CZTSe thin-film solar cells with FTO / CdS / CZTS (CZTSe)/ Mo structure are simulated, considering the impact of defects and recombination. The effects of temperature, bandgap energy, thickness and doping concentration of the absorber layers, as well as the effects of the thickness and doping concentration of the buffer layer on the cells performance were investigated and compared with each other. It is shown that the CZTS solar cell has a higher open circuit voltage (Voc = 0.95 V) while the CZTSe solar cell has a higher short circuit current density (Jsc = 31 mA / cm2). At 300 k, the maximum efficiencies of 17.44% and 14.28% were obtained for the optimum CZTS and CZTSe cells, respectively. The efficiency has been improved significantly compared to the previous works. It was also shown that the efficiency of CZTS cell is less temperature dependent. All simulations were done under AM1.5 illumination.

Keywords

Main Subjects

References

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Electronics Industries
Volume 10, Issue 2 - Serial Number 38
September 2019
Pages 71-80

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History

  • Receive Date: 12 February 2019
  • Revise Date: 12 July 2019
  • Accept Date: 20 July 2019
  • First Publish Date: 23 August 2019

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