K. A. Mcintosh, S. Verghese, R. Molnar, L. Mahoney, K. Molvar, M. Connors, R. Aggarwal, I. Melngailis
{"title":"Ultraviolet photon counting with GaN avalanche photodiodes","authors":"K. A. Mcintosh, S. Verghese, R. Molnar, L. Mahoney, K. Molvar, M. Connors, R. Aggarwal, I. Melngailis","doi":"10.1109/DRC.2000.877134","DOIUrl":null,"url":null,"abstract":"Recent demonstrations of GaN APDs with spatially uniform gain regions free of microplasmas reported multiplication gain (M) values of 10-25 (McIntosh et al, 1999; Carrano et al., 2000). We report here on photon counting, or Geiger-mode, measurements of GaN APDs which entail much greater avalanche gain (10/sup 4/<M<10/sup 8/). The photon detection efficiency (PDE) at 325 nm and dark count rate were measured as a function of the applied voltage bias. Measurements have been made using both passive-quench and gated-quench modes of operation. A PDE of 13% is found at a dark count rate of 400 kHz. The best devices exhibit leakage current less than 20 nA at 90% of breakdown voltage.","PeriodicalId":126654,"journal":{"name":"58th DRC. Device Research Conference. Conference Digest (Cat. No.00TH8526)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2000-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"37","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"58th DRC. Device Research Conference. Conference Digest (Cat. No.00TH8526)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/DRC.2000.877134","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 37
Abstract
Recent demonstrations of GaN APDs with spatially uniform gain regions free of microplasmas reported multiplication gain (M) values of 10-25 (McIntosh et al, 1999; Carrano et al., 2000). We report here on photon counting, or Geiger-mode, measurements of GaN APDs which entail much greater avalanche gain (10/sup 4/