Achieving 38.27 % Efficiency in CIGS Solar Cells Using V2O5 Back-Surface Field and Dual Window Layers: A Simulation Approach
| Authors | Leila Naceri, Mousaab Belarbi |
| Affiliations |
Laboratory of Micro and Nanophysics – LaMiN, Department of FPST-École Nationale Polytechnique d’Oran-Maurice Audin, BP 1523, Oran 31000, Algeria |
| Е-mail | moussaab.belarbi@enp-oran.dz |
| Issue | Volume 17, Year 2025, Number 6 |
| Dates | Received 07 September 2025; revised manuscript received 14 December 2025; published online 19 December 2025 |
| Citation | Leila Naceri, Mousaab Belarbi, J. Nano- Electron. Phys. 17 No 6, 06032 (2025) |
| DOI | https://doi.org/10.21272/jnep.17(6).06032 |
| PACS Number(s) | 07.05.Tp, 88.40.jm |
| Keywords | CIGS solar cell, Back-surface field, Dual window layers, SCAPS-1D (23) , Efficiency optimization. |
| Annotation |
This study explores the performance enhancement of Copper Indium Gallium Selenide (CIGS) solar cells using a novel AZO/SnO2/ZnS/CIGS/V2O5/Ag heterostructure. Simulations with SCAPS-1D (Solar Cell Capacitance Simulator in One Dimension) software, compared three configurations: without a back-surface field (BSF) layer, with a BaSi2 BSF layer, and with a V2O5 BSF layer. Incorporating the V2O5 BSF layer improved efficiency to 30.63 %. Optimization of key parameters, including absorber thickness (1 m), defect density (1012 cm – 3), acceptor density (1019 cm – 3), electron affinity (4.2 eV), series resistance (0 Ω), and operating temperature (310 K), elevated performance, achieving an open-circuit voltage (Voc) of 1.02 V, short-circuit current density (Jsc) of 43.01 mA/cm2, fill factor (FF) of 86.68 %, and an efficiency () of 38.27 %. These improvements are attributed to the synergy between the dual window layers and the V2O5 BSF layer, which together reduced recombination losses and enhanced charge collection. The findings provide valuable insights into the design and development of cost-effective, high-performance, and sustainable CIGS solar cells, positioning this approach as a promising solution for advancing renewable energy technologies. |
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List of References |
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