FA3Bi2I9: An emerging lead-free perovskite for radiation detection
Doup Kim, Ge Yang*
Department of Nuclear Engineering, North Carolina State University
Ralph B. James
Savannah River National Laboratory
*Ge Yang (phone: 919-515-5267, email: gyang9@ncsu.edu)
Abstract
Semiconductor radiation detectors have been actively used in a wide range of fields including medical imaging, homeland security, environmental survey, and industrial monitoring. A series of research activities are on-going to explore new detector materials for improved performance and reduction of manufacturing costs. In this regard, perovskites have attracted strong interests in recent years. Compared with well-studied lead-based perovskite materials, lead free perovskites hold potential to enable the development of environment-friendly detector materials while providing attractive detector characteristics. Here, we report our efforts to develop an emerging perovskite material, FA3Bi2I9 (FA=CH(NH2)2) single crystals, for radiation detection. Systematic microstructural-, electrical-, optical- properties and detector tests will be presented and discussed. These results will provide fundamental knowledge regarding the potential of FA3Bi2I9 as a new class of radiation detector materials.
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