화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO))
권호 23권 1호
발표분야 디스플레이_포스터
제목 Perovskite nanocrystal scintillator for X-ray imaging system
초록 Here, we demonstrated a high-performance, low-cost X-ray detector with high resolution, sensitivity and stability using a CsPbBr3 PNCs. The optical properties were higher than that of the GOS sample due to the high quantum yield of the CsPbBr3 PNCs scintillator. Owing to the more than 5 fold shorter lifetime of CsPbBr3 PNCs scintillator than the GOS sample, the response time of PNCs sample had more than 5 times faster than the GOS sample. The synthesized CsPbBr3 PNCs have mono-dispersed cubic shape with 9 ± 1.5 nm in average size so they could greatly reduce the light scattering, which deteriorates the spatial resolution of X-ray image, thereby exhibiting better spatial resolution for a linear line chart than the GOS. Conclusively, the CsPbBr3 PNCs scintillator based indirect X-ray detectors provide better quality of X-ray images at reduced X-ray exposure than the conventional GOS scintillator based indirect X-ray detectors and a-Se based direct type X-ray detectors.
저자 허진혁, 임상혁
소속 고려대
키워드 Cesium lead tribromide; Perovskite; Nanocrystal; Scintillator
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