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4 October 2023 Annealing effects of lead-free perovskite FA3Bi2I9 single Crystals for Radiation Detection
Ge Yang, Doup Kim, Ralph B. James
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Proceedings Volume PC12696, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXV; PC1269602 (2023) https://doi.org/10.1117/12.2677761
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States
Abstract
Perovskite-based radiation detectors have attracted increasing attention in a broad range of fields, such as homeland security, medical diagnosis, and industrial inspection, due to their excellent physical properties including high attenuation coefficients, attractive charge transport properties, tunable bandgap, and most importantly, cost-effective manufacturing. However, to increase the stopping power to high energy radiation, most of the previously studied perovskite radiation detector materials contain lead (Pb), which is toxic and poses health concerns to both human-beings and the environment. As such, there is a strong need to develop lead-free perovskite materials for radiation detection. Here, we report our efforts to develop lead-free perovskite, FA3Bi2I9, single crystals for X-ray detection and imaging applications. A series of annealing experiments were conducted to improve the properties of FA3Bi2I9 crystals for radiation detection. Systematic microstructural-, electrical-, optical-, and mechanical- characterization results, together with X-ray response testing, will be presented and discussed.
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Ge Yang, Doup Kim, and Ralph B. James "Annealing effects of lead-free perovskite FA3Bi2I9 single Crystals for Radiation Detection", Proc. SPIE PC12696, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXV, PC1269602 (4 October 2023); https://doi.org/10.1117/12.2677761
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KEYWORDS
Perovskite
Crystals
Annealing
Materials properties
Lead
Radiation injury
X-rays
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