Numerical Simulation of the Performance of the Cu(In,Ga)Se 2 -based Solar Photovoltaic Cell as a Function of the Space Charge Region Width
Year: 2026
Type: article
Abstract: In a global context marked by constantly increasing energy demand, dwindling fossil fuel resources, and growing environmental concerns, the search for alternative, clean, and sustainable energy sources has become essential. Several questions remain regarding the production of abundant, low-cost energy without environmental impact. Therefore, optimizing the performance of thin-film photovoltaic (PV) solar cells has been the subject of numerous studies. Our study falls within this perspective and analyzes the role of the space charge region (SCR) in the performance optimization process. The aim of our study is to obtain improved electrical parameters. To achieve this objective, we opted for numerical simulation with One-dimensional Solar Cell Capacities Simulation software (SCAPS-1D) of the Mo/CIGS/CdS/ZnO structure. The results obtained show a significant decrease in the open circuit voltage (V OC ) and the fill factor (FF) as the SCR width increases. The short-circuit current density (J SC ) values increase with increasing SCR width and reach their maximum at a SCR value of 600 nm. As for the conversion efficiency, the values decrease for 100 nm≤ W SCR ≤200 nm then remain almost constant for 200 nm SCR <600 nm. Beyond 600 nm, the conversion efficiency values gradually decrease. All the results show the need for an average SCR to obtain high performance and good stability (200≤W SCR ≤700 nm). Future research will consider the effects of donor and acceptor density in the performance optimization process.
Institutions: Université Joseph Ki-Zerbo, Nazi Boni University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7213745903