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Sensitive X-ray detectors made of methylammonium lead tribromide perovskite single crystals

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WOS被引频次:135
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成果类型:
期刊论文
作者:
Wei, Haotong*;Fang, Yanjun;Mulligan, Padhraic;Chuirazzi, William;Fang, Hong-Hua;Wang, Congcong;Ecker, Benjamin R.;Gao, Yongli;Loi, Maria Antonietta;Cao, Lei;Huang, Jinsong
通讯作者:
Wei, Haotong
作者机构:
[Ecker, Benjamin R.; Gao, Yongli; Wang, Congcong] Department of Physics and Astronomy, University of Rochester, Rochester, NY, 14627-0171, United States
[Chuirazzi, William; Cao, Lei; Mulligan, Padhraic] Nuclear Engineering Program, Department of Mechanical and Aerospace Engineering, Ohio State University, Columbus, OH, 43210, United States
[Gao, Yongli] Institute of Super-microstructure and Ultrafast Process in Advanced Materials (ISUPAM), Central South University, Changsha, Hunan, 410083, China
[Huang, Jinsong; Wei, Haotong; Fang, Yanjun] Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NB, 68588, United States
[Fang, Hong-Hua; Loi, Maria Antonietta] Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, AG Groningen, 9747, Netherlands
通讯机构:
[Huang, Jinsong] Univ Nebraska, Dept Mech & Mat Engn, Lincoln, NE 68588 USA.
[Cao, Lei] Ohio State Univ, Dept Mech & Aerosp Engn, Nucl Engn Program, Columbus, OH 43210 USA.
语种:
英文
关键词:
Atomic numbers - Charge recombinations - Detection efficiency - Security checks - Single-crystal devices - X-ray and gamma-ray detections - X-ray detector - X-ray energies
期刊:
NATURE PHOTONICS
ISSN:
1749-4885
年:
2016
卷:
10
期:
5
页码:
333-339
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:物理学;WOS学科类别:Optics;Physics, Applied
入藏号:
WOS:000374980100016;EI:20161302155534
基金类别:
Defense Threat Reduction Agency [HDTRA1-14-1-0030]; European Research Council (ERC starting grant 'Hy-SPOD') [306983]; National Science Foundation [CBET-1437656]
机构署名:
本校为其他机构
院系归属:
物理与电子学院
摘要:
The large mobilities and carrier lifetimes of hybrid perovskite single crystals and the high atomic numbers of Pb, I and Br make them ideal for X-ray and gamma-ray detection. Here, we report a sensitive X-ray detector made of methylammonium lead bromide perovskite single crystals. A record-high mobility-lifetime product of 1.2 ×10 -2 €...cm 2 €...V -1 and an extremely small surface charge recombination velocity of 64 €...cm €...s -1 are realized by reducing the bulk defects and passivating surface traps. Single-crystal devices with a thickness of 2-3 €...mm show 16.4% detection efficiency at near zero bias under irradiation with continuum X-ray energy up to 50 €...keV. The lowest detectable X-ray dose rate is 0.5 €...μGy air €...s -1 with a sensitivity of 80 €...μC €...Gy 1 air €...cm -2, which is four times higher than the sensitivity achieved with α-Se X-ray detectors. This allows the radiation dose applied to a human body to be reduced for many medical and security check applications. ©2016 Macmillan Publishers Limited. All rights reserved.
参考文献:
Androulakis J, 2011, ADV MATER, V23, P4163, DOI 10.1002/adma.201102450
Berger M. J., 2013, XCOM PHOTON CROSS SE
Bi C, 2015, NAT COMMUN, V6, DOI 10.1038/ncomms8747
Bi Y, 2016, J PHYS CHEM LETT, V7, P923, DOI 10.1021/acs.jpclett.6b00269
Brenner DJ, 2001, AM J ROENTGENOL, V176, P289

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