Oxide perovskite Ba2AgIO6 wafers for X-ray detection

• 作者: Longbo YANG Jincong PANG Zhifang TAN Qi XIAO Tong JIN Jiajun LUO Guangda NIU Jiang TANG
• 来源期刊: 光电子学前沿
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: RESEARCH
• 页码范围: 473-481
• 页数: 9页
• 语种: 英文

摘要

X-ray detection is of great significance in biomedical,nondestructive,and scientific research.Lead halide perovskites have recently emerged as one of the most promising materials for direct X-ray detection.However,the lead toxicity remains a worrisome concern for further commercial application.Great efforts have been made to search for lead-free perovskites with similar optoelectronic properties.Here,we present a lead-free oxide double perovskite material Ba2AgIO6 for X-ray detection.The lead-free,all-inorganic nature,as well as the high density of Ba2AgIO6,promises excellent prospects in X-ray applications.By employing the hydrothermal method,we successfully synthesized highly crystalline Ba2AgIO6 powder with pure phase.Furthermore,we prepared Ba2AgIO6 wafers through isostatic pressure and built X-ray detectors with Au/Ba2AgIO6 wafer/Au photo-conductive structure.The as-prepared X-ray detectors showed a sensitivity of 18.9 μC/(Gyair·cm2)at 5 V/mm,similar to commercial α-Se detectors showcasing their advantages for X-ray detection.