Gradient Inverse Temperature Crystallization for High-Quality MAPbBr 3 Perovskite Single Crystals and Supreme-Sensitivity X-ray Detectors

Key Points

• The study aims to explore the formation of intrinsic defects in MAPbBr3 perovskite crystals and their implications for device performance.
• Utilized density functional theory calculations to analyze defect formation.
• Examined growth conditions, focusing on bromine-rich and lead-poor environments.
• Investigated the impact of these conditions on deep-level defect levels.
• Identified bromine-rich and lead-poor conditions as effective in reducing deep-level defects.
• Demonstrated that optimized growth conditions enhance perovskite crystal quality.
• Suggests enhanced performance for X-ray detectors due to minimized defect levels.