响应度
光子
半导体
光电子学
X射线探测器
材料科学
光电二极管
钙钛矿(结构)
卤化物
吸收(声学)
探测器
光学
光子学
光电探测器
物理
化学
复合材料
无机化学
结晶学
作者
Sergii Yakunin,Mykhailo Sytnyk,Dominik Kriegner,Shreetu Shrestha,Moses Richter,Gebhard J. Matt,Hamed Azimi,Christoph J. Brabec,J. Stangl,Maksym V. Kovalenko,Wolfgang Heiß
出处
期刊:Nature Photonics
[Springer Nature]
日期:2015-05-25
卷期号:9 (7): 444-449
被引量:954
标识
DOI:10.1038/nphoton.2015.82
摘要
The evolution of real-time medical diagnostic tools such as angiography and computer tomography from radiography based on photographic plates was enabled by the development of integrated solid-state X-ray photon detectors made from conventional solid-state semiconductors. Recently, for optoelectronic devices operating in the visible and near-infrared spectral regions, solution-processed organic and inorganic semiconductors have also attracted a great deal of attention. Here, we demonstrate a possibility to use such inexpensive semiconductors for the sensitive detection of X-ray photons by direct photon-to-current conversion. In particular, methylammonium lead iodide perovskite (CH3NH3PbI3) offers a compelling combination of fast photoresponse and a high absorption cross-section for X-rays, owing to the heavy Pb and I atoms. Solution-processed photodiodes as well as photoconductors are presented, exhibiting high values of X-ray sensitivity (up to 25 μC mGyair−1 cm−3) and responsivity (1.9 × 104 carriers/photon), which are commensurate with those obtained by the current solid-state technology. Solid-state X-ray detectors have enabled real-time diagnostics as well as reduced patient dose. Now researchers have shown that potentially inexpensive perovskites can be used for efficient X-ray imaging.
科研通智能强力驱动
Strongly Powered by AbleSci AI