Surface Trap Dynamics and Gamma‐Ray Detection Enhancement in Passivated FAPbBr3 Perovskite Crystals

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Digital signal processing reveals critical shallow trap dynamics that improve gamma peak-to-Compton ratio in perovskite detectors.

Gamma peak-to-Compton ratio improved to 1.80 from 1.09, demonstrating enhanced signal quality.
Surface passivation reduced deep trap states, increasing charge collection efficiency through shallow traps.
Time-resolved analysis isolated shallow trap reemission occurring 1.1 µs after carrier generation.
Findings support the strategic use of surface dynamics to enhance spectral fidelity in radiation detection.

Wood et al. (2025) studied this question.

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