Comparative study of distinct halide composites for highly efficient perovskite solar cells using a SCAPS-1D...

Area of Science:

• Materials Science
• Renewable Energy
• Solid-State Physics

Background:

• Perovskite solar cells (PSCs) are a promising photovoltaic technology.
• Halide-based methylammonium perovskites are key active absorber layers (PALs) in PSCs.
• Optimizing PAL properties is crucial for enhancing PSC performance.

Purpose of the Study:

• To investigate the influence of halide-based methylammonium perovskites as PALs in PSCs.
• To optimize PSC performance by analyzing the impact of PAL thickness, temperature, and defect density.
• To identify the optimal perovskite composition and parameters for maximum power conversion efficiency (PCE).

Main Methods:

• Utilized SCAPS-1D simulation software for device modeling and analysis.
• Performed simulations to analyze the effects of PAL thickness, temperature, and defect density on PSC output parameters.
• Conducted impedance analysis, quantum efficiency (QE), and current-voltage (J-V) characteristic comparisons.

Main Results:

• Increased PAL thickness enhanced short-circuit current (JSC) for MAPbI3 and MAPbI2Br, while MAPbBr3 remained steady. MAPbI2Br achieved the highest efficiency (22.05%) at 1.2 μm thickness.
• Rising temperatures decreased JSC, open-circuit voltage (VOC), fill factor (FF), and PCE. The highest efficiency of 22.05% was achieved at 300 K for MAPbI2Br-based PSCs.
• Optimal conditions for MAPbI2Br-based PSCs were identified as 1.2 μm thickness and a defect density of 1 × 10^13 cm^-3, yielding approximately 22.05% PCE. MAPbI2Br demonstrated superior VOC and JSC compared to other compositions.

Conclusions:

• MAPbI2Br is a highly efficient perovskite material for PSCs, offering a superior combination of VOC and JSC.
• Optimized PAL thickness and defect density are critical for maximizing PSC performance.
• This research contributes to the development of more efficient perovskite solar cells through the strategic use of distinct halide-based perovskite materials.