{"title":"Radiation effects in ultraviolet sensitive SiC photodiodes","authors":"S. Metzger, H. Henschel, O. Kohn, W. Lennartz","doi":"10.1109/RADECS.1999.858624","DOIUrl":null,"url":null,"abstract":"We tested SiC photodiodes with Co-60 gammas, 32 MeV protons and 14 MeV neutrons. The UV-photocurrent decreased to about 50% of its initial value at a total gamma dose of 40 kGy (Air). Nearly the same decrease was observed during proton irradiations of 9/spl times/10/sup 12/ cm/sup -2/. But after a neutron fluence of 1.5/spl times/10/sup 13/ cm/sup -2/ the signal was still 85% of that before irradiation. It is shown that the decrease of the photocurrent is caused by darkening of the glass window. Some of the color-centres could be annealed with the intense UV-light of a deuterium lamp. Furthermore hydrogen treatment of the photodiode reduces the radiation effects by about 20%.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RADECS.1999.858624","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
We tested SiC photodiodes with Co-60 gammas, 32 MeV protons and 14 MeV neutrons. The UV-photocurrent decreased to about 50% of its initial value at a total gamma dose of 40 kGy (Air). Nearly the same decrease was observed during proton irradiations of 9/spl times/10/sup 12/ cm/sup -2/. But after a neutron fluence of 1.5/spl times/10/sup 13/ cm/sup -2/ the signal was still 85% of that before irradiation. It is shown that the decrease of the photocurrent is caused by darkening of the glass window. Some of the color-centres could be annealed with the intense UV-light of a deuterium lamp. Furthermore hydrogen treatment of the photodiode reduces the radiation effects by about 20%.
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