TY - JOUR
T1 - Highly Sensitive and Stable X-ray Detector Based on a 0D Structural Cs4PbI6Single Crystal
AU - Xu, Qiang
AU - Li, Chen
AU - Nie, Jing
AU - Guo, Yong
AU - Wang, Xiang
AU - Zhang, Bohao
AU - Ouyang, Xiaoping
N1 - Publisher Copyright:
© 2021 American Chemical Society. All rights reserved.
PY - 2021/1/14
Y1 - 2021/1/14
N2 - Lead halide perovskite single crystals with a high X-ray stopping power and large μτ product have been successfully used for X-ray detection. However, poor air stability and ionic migration lead to the degradation of the devices for long-term operations. Here, we report a solution-processed lead 0D bulk Cs4PbI6 single crystal, which have I atoms in isolated [PbI6]4-. This 0D Cs4PbI6 single crystal has a μτ product of 9.7 × 10-4 cm2 V-1 and an activation energy of 321.28 meV. We have fabricated a photoconductor device with a symmetric Au/Cs4PbI6/Au sandwich structure, which exhibits a high sensitivity of 451.49 μC Gy-1 cm-2 under 30 keV X-ray irradiation at an applied voltage of 30 V. After storing the device in air at room temperature for three months, the device retains nearly the same sensitivity as the original. These results demonstrate that this 0D Cs4PbI6 perovskite single crystal has great potential for practical X-ray detection applications.
AB - Lead halide perovskite single crystals with a high X-ray stopping power and large μτ product have been successfully used for X-ray detection. However, poor air stability and ionic migration lead to the degradation of the devices for long-term operations. Here, we report a solution-processed lead 0D bulk Cs4PbI6 single crystal, which have I atoms in isolated [PbI6]4-. This 0D Cs4PbI6 single crystal has a μτ product of 9.7 × 10-4 cm2 V-1 and an activation energy of 321.28 meV. We have fabricated a photoconductor device with a symmetric Au/Cs4PbI6/Au sandwich structure, which exhibits a high sensitivity of 451.49 μC Gy-1 cm-2 under 30 keV X-ray irradiation at an applied voltage of 30 V. After storing the device in air at room temperature for three months, the device retains nearly the same sensitivity as the original. These results demonstrate that this 0D Cs4PbI6 perovskite single crystal has great potential for practical X-ray detection applications.
UR - https://www.scopus.com/pages/publications/85099029972
U2 - 10.1021/acs.jpclett.0c03411
DO - 10.1021/acs.jpclett.0c03411
M3 - 文章
C2 - 33337893
AN - SCOPUS:85099029972
SN - 1948-7185
VL - 12
SP - 287
EP - 293
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 1
ER -