Optimization of Chalcogenide CdTe, CZTS and CZTSe Solar Cells PerformancesUsing Cd1-x Znx S Buffer Layer

Benabbas S., Er Z., Bouchama I., Rouabah Z., Bouarissa N., Boudour S., ...More

Iranian Journal of Chemistry and Chemical Engineering, vol.41, no.4, pp.1360-1369, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 4
  • Publication Date: 2022
  • Doi Number: 10.30492/ijcce.2022.122850.4025
  • Journal Name: Iranian Journal of Chemistry and Chemical Engineering
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Directory of Open Access Journals
  • Page Numbers: pp.1360-1369
  • Keywords: Absorber Layer, AMPS-1D, Buffer Layer, Cd1-xZnxS, SCAPS
  • Istanbul Technical University Affiliated: Yes


© 2022, Iranian Institute of Research and Development in Chemical Industries. All rights reserved.Cadmium zinc sulfide (Cd1-xZnxS) as a wide-bandgap material with x=0.7 was used in the present work as an alternative buffer material to CdS to improve the efficiency o fZnO/Cd1-xZnxS/CdTe, ZnO/Cd1-xZnxS/CZTS and ZnO/Cd1-xZnxS/CZTSe thin film solar cells. The photovoltaic parameters such as efficiency, open circuit voltage (Voc), short circuit current density (Jsc), and the Fill Factor (FF) have been computed using one-dimensional simulation programs such as Solar Cell Capacitance Simulator (SCAPS v3.3) and Analysis of Microelectronic and Photonic Structures (AMPS-1D). An improvement in conversion efficiency is noticed compared to the structure with the CdS buffer layer. It is found that the efficiencies of Cd1-xZnxS/CZTSe and Cd1-xZnxS/CdTeareincreased from 12.61% to 15.35% and from 17.53% to 18.83%, respectively. The simulations were performed for 1 µmthick absorber layers. It is also found that efficiency rises from 12.53% to 13.23% with Cd1-xZnxS/CZTS structure for CZTS thickness of 2.5 µm. Moreover, the Quantum Efficiency (QE) characteristics display a maximum value of more than 80% in the visible range and the structures presented a slight improvement in the short wavelength. The present study shows that the suggested structures with aCd1-xZnxS buffer layer may improve efficiency and reduce the amount of Cd, which is a toxic element.