{"title":"Self-Powered Fast Response X-Ray Detector Based on Vertical p-NiO/Ga2O3 Heterojunction Diode","authors":"Silong Zhang;Yuxin Deng;Liang Chen;Leidang Zhou;Xing Lu;Fangbao Wang;Xue Du;Yang Li;Shiyi He;Xiaoping Ouyang","doi":"10.1109/LPT.2023.3348869","DOIUrl":null,"url":null,"abstract":"Ga2O3, as an ultra-wide band gap material with physical properties such as large atomic number, low intrinsic carrier density, and high irradiation tolerance, has shown great potential in X-ray detection. This letter reports a self-powered X-ray detector based on vertical p-NiO/Ga2O3 heterojunction diodes (HJDs). Benefiting from the high quality and high built-in potential of the p-n heterojunction, the HJD detector exhibited a pronounced photovoltaic response to X-rays at 0 V with a sensitivity of 212 nC\n<inline-formula> <tex-math>$\\cdot $ </tex-math></inline-formula>\nGy\n<inline-formula> <tex-math>$^{-1}\\cdot $ </tex-math></inline-formula>\ncm−2 and a fast response time of less than 0.02 s in transient X-ray response measurements, which was much faster than that of the reported Ga2O3 Schottky barrier diode (SBD) detector. The power-voltage (P-V) test indicated that the device conformed to typical photovoltaic characteristics with a maximum output power of 2.95 nW. Moreover, the HJD detector showed a good linear property to various X-ray dose rates from 0.0383 Gy\n<inline-formula> <tex-math>$\\cdot \\text{s}^{-1}$ </tex-math></inline-formula>\n to 1.149 Gy\n<inline-formula> <tex-math>$\\cdot \\text{s}^{-1}$ </tex-math></inline-formula>\n.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10379179/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Ga2O3, as an ultra-wide band gap material with physical properties such as large atomic number, low intrinsic carrier density, and high irradiation tolerance, has shown great potential in X-ray detection. This letter reports a self-powered X-ray detector based on vertical p-NiO/Ga2O3 heterojunction diodes (HJDs). Benefiting from the high quality and high built-in potential of the p-n heterojunction, the HJD detector exhibited a pronounced photovoltaic response to X-rays at 0 V with a sensitivity of 212 nC
$\cdot $
Gy
$^{-1}\cdot $
cm−2 and a fast response time of less than 0.02 s in transient X-ray response measurements, which was much faster than that of the reported Ga2O3 Schottky barrier diode (SBD) detector. The power-voltage (P-V) test indicated that the device conformed to typical photovoltaic characteristics with a maximum output power of 2.95 nW. Moreover, the HJD detector showed a good linear property to various X-ray dose rates from 0.0383 Gy
$\cdot \text{s}^{-1}$
to 1.149 Gy
$\cdot \text{s}^{-1}$
.
期刊介绍:
IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.