Quantifying Efficiency Limitations in All-Inorganic Halide Perovskite Solar Cells

Area of Science:

• Materials Science
• Photovoltaics
• Solid-State Chemistry

Background:

• Halide perovskites offer excellent optoelectronic properties but suffer from poor stability, hindering commercialization.
• Cesium (Cs)-based all-inorganic perovskites are explored to enhance thermal stability over organic cations like methylammonium and formamidinium.
• Despite good performance, Cs-based perovskites currently trail hybrid organic-inorganic perovskites in device efficiency.

Purpose of the Study:

• To review the state-of-the-art of all-inorganic perovskites for photovoltaic applications.
• To perform meta-analyses of key performance parameters at both cell and material levels.
• To provide guidelines for improving the performance of all-inorganic perovskite solar cells.

Main Methods:

• Detailed meta-analyses of key performance parameters for all-inorganic perovskites.
• Discussion of material properties including carrier mobilities, external photoluminescence quantum efficiency, and photoluminescence lifetime.
• Comparison of defect tolerance in all-inorganic versus hybrid perovskites.
• Unified approach to analyze performance losses (recombination, resistive, optical) in perovskite solar cells.

Main Results:

• All-inorganic perovskites exhibit promising optoelectronic properties but require further optimization to match hybrid perovskite performance.
• Meta-analysis reveals critical material properties and defect tolerance characteristics.
• Performance loss analysis identifies key areas for improvement in all-inorganic perovskite solar cells.
• Understanding of recombination, resistive, and optical losses is crucial for device enhancement.

Conclusions:

• All-inorganic perovskite solar cells are a promising avenue for stable photovoltaic devices.
• Further research focusing on defect management and loss reduction is essential for enhancing performance.
• This review provides a roadmap for future development of high-performance all-inorganic perovskite solar cells.