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Simulation of highly efficient GeSe-based solar cells with SCAPS-1D.
Zhi-Ping Huang1, You-Xian Chen1, Zi-Heng Huang2
1Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, College of Physics and Energy, Fujian Normal University, Fuzhou, 350117, China.
Heliyon
|August 10, 2023
Summary
Germanium selenide (GeSe) solar cells show promise but need efficiency improvements. This study optimized GeSe thin-film solar cells using SCAPS-1D simulations, achieving a 17.98% power conversion efficiency (PCE).
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Germanium selenide (GeSe) is a promising light-harvesting material due to its optical, electrical, earth-abundant, and low-toxicity properties.
- Current GeSe-based solar cell power conversion efficiencies (PCE) are significantly below the theoretical Shockley-Queisser limit.
Purpose of the Study:
- To systematically design, simulate, and analyze highly efficient GeSe thin-film solar cells.
- To identify key parameters influencing device performance for optimization.
Main Methods:
- Utilized SCAPS-1D (Solar Cell Capacitance Simulator in 1 Dimension) for device simulation and analysis.
- Investigated the impact of GeSe layer thickness and defect density, GeSe/CdS interface defect density, electron transport layer (ETL), electrode work function, and hole transport layer (HTL) on device performance.
Main Results:
- Optimized device parameters including thickness, defect density, carrier concentration, work function, ETL, and HTL.
- Achieved a simulated power conversion efficiency (PCE) of 17.98% with a short-circuit current density (Jsc) of 37.11 mA/cm², fill factor (FF) of 75.53%, and open-circuit voltage (Voc) of 0.61 V.
Conclusions:
- The study provides theoretical guidance for designing high-efficiency GeSe thin-film solar cells.
- Optimization of material properties and device architecture is crucial for enhancing GeSe solar cell performance.
