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Alpha particle detection based on low leakage and high-barrier vertical PtOx/β-Ga2O3 Schottky barrier diode

文献类型：期刊论文

作者Bai, Shiyu1; Hou, Xiaohu1; Meng, Xiangdong2; Ren, Lei2; Li, Chen1; Han, Zhao1; Yu, Shunjie1; Liu, Yan1; Peng, Zhixin1; Han, Yuncheng2
刊名APPLIED PHYSICS LETTERS
出版日期2024-08-05
卷号125
ISSN号0003-6951
DOI10.1063/5.0216689
通讯作者Hou, Xiaohu(hxh2022@ustc.edu.cn) ; Han, Yuncheng(yuncheng.han@inest.cas.cn) ; Long, Shibing(shibinglong@ustc.edu.cn)
英文摘要High-performance radiation detectors are essential in many sectors spanning medical diagnostics, nuclear control, and particle physics. Ultrawide bandgap semiconductor materials have become one of the most promising candidates due to their excellent performance. Here, based on beta-Ga2O3, a Schottky diode-type alpha particle detector was demonstrated. In order to reduce the reverse leakage current of the large-area device, the metal-oxide electrode PtOx was introduced to form high-barrier contacts (1.83 eV) with Ga2O3. The device exhibits a low leakage current density of 63 pA/cm(2) at -100 V and apparent energy spectra of Am-241 generated alpha particles with an energy of 5.486 MeV at various reverse voltages from -40 to -120 V. The charge collection efficiency (CCE) and energy resolution of the device (at -120 V) are 31.7% and 15.3%, respectively. Meanwhile, the mechanism of interaction between alpha particles and beta-Ga2O3 was analyzed, and a 45 degrees oblique incidence was adopted to increase the deposited energy of alpha particles in the depletion region. Furthermore, the differences between actual CCE and theoretical CCE are investigated as guidance for further improving detector performance. This work reveals the great potential and good prospects of Ga2O3 as an economical, efficient, and radiation-resistant ionizing radiation detector.
资助项目University of Science and Technology of China10.13039/501100009076[61925110] ; University of Science and Technology of China10.13039/501100009076[U20A20207] ; University of Science and Technology of China10.13039/501100009076[62004184] ; University of Science and Technology of China10.13039/501100009076[62004186] ; University of Science and Technology of China10.13039/501100009076[62304215] ; University of Science and Technology of China10.13039/501100009076[62234007] ; National Natural Science Foundation of China[2023YFB3610200] ; National Key Research and Development Program of China[YD2100002009] ; National Key Research and Development Program of China[YD2100002010] ; National Key Research and Development Program of China[YD2100002007] ; University of Science and Technology of China (USTC)[2022HSC-CIP024] ; Collaborative Innovation Program of Hefei Science Center, Chinese Academy of Sciences[2023M733367] ; China Postdoctoral Science Foundation ; Center for Micro and Nanoscale Research and Fabrication of USTC
WOS研究方向Physics
语种英语
WOS记录号WOS:001284514400015
出版者AIP Publishing
资助机构University of Science and Technology of China10.13039/501100009076 ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; University of Science and Technology of China (USTC) ; Collaborative Innovation Program of Hefei Science Center, Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; Center for Micro and Nanoscale Research and Fabrication of USTC
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/135979]  
专题中国科学院合肥物质科学研究院
通讯作者Hou, Xiaohu; Han, Yuncheng; Long, Shibing
作者单位1.Univ Sci & Technol China, Sch Microelect, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Bai, Shiyu,Hou, Xiaohu,Meng, Xiangdong,et al. Alpha particle detection based on low leakage and high-barrier vertical PtOx/β-Ga2O3 Schottky barrier diode[J]. APPLIED PHYSICS LETTERS,2024,125.
APA Bai, Shiyu.,Hou, Xiaohu.,Meng, Xiangdong.,Ren, Lei.,Li, Chen.,...&Long, Shibing.(2024).Alpha particle detection based on low leakage and high-barrier vertical PtOx/β-Ga2O3 Schottky barrier diode.APPLIED PHYSICS LETTERS,125.
MLA Bai, Shiyu,et al."Alpha particle detection based on low leakage and high-barrier vertical PtOx/β-Ga2O3 Schottky barrier diode".APPLIED PHYSICS LETTERS 125(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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