2024
DOI: 10.1002/adma.202411332
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Dimethylamine Bismuth Iodide: A Lead‐Free Perovskite Enabling Ultra‐Sensitive UVC Photodetection with Low Operating Voltage and High Detectivity

Avija Ajayakumar,
Andrzej Sławek,
Chinnadurai Muthu
et al.

Abstract: Ultraviolet (UV) photodetectors (PDs) are essential for various applications, but traditional materials face challenges in cost, fabrication, and performance. This study introduces dimethylamine bismuth iodide (DMABI) as a promising lead‐free perovskite for UV PDs, particularly in the UVC region. DMABI demonstrates exceptional device parameters, including an ultralow dark current of 0.12 pA at 0.05 V, a high on/off ratio of 7.1 × 104, and a peak detectivity of 3.18 × 1013 Jones. The unique structure of DMABI, … Show more

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