Numerical simulation to optimize power conversion efficiency of an FTO/GO/Cs₂AgBiBr₆/Cu₂O solar cell.

Area of Science:

• Renewable energy materials science
• Semiconductor device physics
• Environmental science and sustainability

Background:

• Hybrid perovskites offer efficient solar power conversion but raise environmental concerns due to toxic and degradable components.
• Developing stable, lead-free alternatives is crucial for the commercial viability of perovskite solar cells.
• Next-generation solar technology demands environmentally friendly and reliable materials for efficient energy conversion.

Purpose of the Study:

• To simulate and optimize a novel, stable, nondegradable, and lead-free perovskite solar cell design.
• To investigate the performance of a Cs2AgBiBr6 absorber layer with Cu2O and GO transport layers.
• To address environmental concerns associated with traditional perovskite solar cells.

Main Methods:

• Simulation of a solar cell device using SCAPS 1D software.
• Tuning of absorber, electron transport, and hole transport layer thicknesses for performance optimization.
• Analysis of the impact of electron affinity, series resistance, and temperature on device performance metrics.

Main Results:

• A stable, lead-free double perovskite solar cell Cs2AgBiBr6 was simulated with Cu2O and GO layers.
• Optimal performance was achieved with specific layer thicknesses and a Cu2O electron affinity of 4.0 eV.
• Detailed analysis of generation/recombination rates, current density, and quantum efficiency under varying conditions was performed.

Conclusions:

• The simulated lead-free perovskite solar cell demonstrates promising performance and stability.
• This research offers a viable, environmentally conscious alternative to toxic perovskite solar cells.
• Findings encourage the development of sustainable inorganic perovskite solar devices, advancing green energy solutions.