伽玛射线辐照下ga2o3基x射线探测器性能的退化。

IF 3 3区 工程技术 Q2 CHEMISTRY, ANALYTICAL
Micromachines Pub Date : 2025-03-14 DOI:10.3390/mi16030339
Xiao Ouyang, Silong Zhang, Tao Bai, Zhuo Chen, Yuxin Deng, Leidang Zhou, Xiaojing Song, Hao Chen, Yuru Lai, Xing Lu, Liang Chen, Liangliang Miao, Xiaoping Ouyang
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引用次数: 0

摘要

研究了p-NiO/β-Ga2O3异质结二极管(hdd) x射线探测器在-200 V总剂量13.5 kGy(Si) γ射线辐照前后的x射线响应性能。HJD x射线探测器的响应性能受反向偏置下HJD的陷阱辅助导电过程的影响,表现为净(响应)电流增大、非线性和响应时间长。辐照后,由于β-Ga2O3的净载流子浓度增加,导致电场增大,PFE主导了HJDs的泄漏电流。这种导电过程削弱了HJD x射线探测器在灵敏度、输出线性度和响应速度方面的性能。该研究对ga2o3基辐射探测器的辐射损伤和性能退化机制有重要的指导意义,对提高辐射探测器的可靠性和稳定性具有指导意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance Degradation of Ga2O3-Based X-Ray Detector Under Gamma-Ray Irradiation.

X-ray response performances of a p-NiO/β-Ga2O3 hetero-junction diode (HJD) X-ray detector were studied before and after γ-ray irradiation at -200 V, with a total dose of 13.5 kGy(Si). The response performances of the HJD X-ray detector were influenced by the trap-assistant conductive process of the HJD under reverse bias, which exhibited an increasing net (response) current, nonlinearity, and a long response time. After irradiation, the Poole-Frenkel emission (PFE) dominated the leakage current of HJDs due to the higher electric field caused by the increased net carrier concentration of β-Ga2O3. This conductive process weakened the performance of the HJD X-ray detector in terms of sensitivity, output linearity, and response speed. This study provided valuable insights into the radiation damage and performance degradation mechanisms of Ga2O3-based radiation detectors and offered guidance on improving the reliability and stability of these radiation detectors.

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来源期刊
Micromachines
Micromachines NANOSCIENCE & NANOTECHNOLOGY-INSTRUMENTS & INSTRUMENTATION
CiteScore
5.20
自引率
14.70%
发文量
1862
审稿时长
16.31 days
期刊介绍: Micromachines (ISSN 2072-666X) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to micro-scaled machines and micromachinery. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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