Lattice Anchoring Stabilizes α-FAPbI3 Perovskite for High-Performance X-Ray Detectors
A lattice-anchoring strategy using low-dimensional perovskite addresses structural instability in α-formamidinium lead iodide (FAPbI 3 ) by matching crystal lattice, mitigating residual stress and tensile strain. Enhanced Pb-I bonding strength and reduced lattice strain improve structural stability and carrier mobility-lifetime product, enabling efficient charge transport. Optimized X-ray detectors achieve high sensitivity (1.83 × 10 5 μC Gy air –1 cm –2 ), low detection limit (27.6 nGy air s –1 ), and stable performance under prolonged irradiation.
研究领域:
材料科学
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凝聚态物理
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半导体器件
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辐射探测
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纳米科技
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