TY - JOUR
T1 - X-Ray Detector Based on All-Inorganic Lead-Free Cs2AgBiBr6 Perovskite Single Crystal
AU - Zhang, Hainan
AU - Gao, Ziyan
AU - Liang, Renrong
AU - Zheng, Xinran
AU - Geng, Xiangshun
AU - Zhao, Yunfei
AU - Xie, Dan
AU - Hong, Jiawang
AU - Tian, He
AU - Yang, Yi
AU - Wang, Xueyun
AU - Ren, Tian Ling
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - In this paper, single crystals (SCs) of the Cs2AgBiBr6 double perovskite were grown using the method of crystallization from a supersaturated solution. It was shown that the natural crystal growth surface of the perovskite with perfect crystal quality is along the (111) plane by X-ray diffraction (XRD) and high-resolution transmission electron microscope (HRTEM) analyses. The fabricated high-sensitivity X-ray detector based on the Cs2AgBiBr6 SCs with vertical structure achieved detection sensitivity up to 316μ CGyair-1 cm-2 under bias voltage of 18 V. Furthermore, the frequency noise characteristics of the device under different posttreatment processes were systematically analyzed, which indicated that the combination of thermal annealing and isopropanol rinsing can suppress field-driven ion migration and surface conduction channel, thereby increasing the resistivity of the perovskite material and reducing the noise current of the device. Our results revealed that the Cs2AgBiBr6 SCs-based X-ray detector with high sensitivity and low cost has a great potential for application in manufacturing lead-free and stable radiation detection electronics in the future.
AB - In this paper, single crystals (SCs) of the Cs2AgBiBr6 double perovskite were grown using the method of crystallization from a supersaturated solution. It was shown that the natural crystal growth surface of the perovskite with perfect crystal quality is along the (111) plane by X-ray diffraction (XRD) and high-resolution transmission electron microscope (HRTEM) analyses. The fabricated high-sensitivity X-ray detector based on the Cs2AgBiBr6 SCs with vertical structure achieved detection sensitivity up to 316μ CGyair-1 cm-2 under bias voltage of 18 V. Furthermore, the frequency noise characteristics of the device under different posttreatment processes were systematically analyzed, which indicated that the combination of thermal annealing and isopropanol rinsing can suppress field-driven ion migration and surface conduction channel, thereby increasing the resistivity of the perovskite material and reducing the noise current of the device. Our results revealed that the Cs2AgBiBr6 SCs-based X-ray detector with high sensitivity and low cost has a great potential for application in manufacturing lead-free and stable radiation detection electronics in the future.
KW - Cs AgBiBr X-ray detector
KW - lead-free perovskite
KW - noise characteristics
KW - radiation detection electronics
UR - http://www.scopus.com/inward/record.url?scp=85065130370&partnerID=8YFLogxK
U2 - 10.1109/TED.2019.2903537
DO - 10.1109/TED.2019.2903537
M3 - Article
AN - SCOPUS:85065130370
SN - 0018-9383
VL - 66
SP - 2224
EP - 2229
JO - IEEE Transactions on Electron Devices
JF - IEEE Transactions on Electron Devices
IS - 5
M1 - 8675747
ER -