N. Jiang, P. Parkinson, Q. Gao, J. Wong-Leung, S. Breuer, H. Tan, C. Jagadish
{"title":"GaAs/AlxGa1−xAs核壳纳米线中少数载流子寿命的改善","authors":"N. Jiang, P. Parkinson, Q. Gao, J. Wong-Leung, S. Breuer, H. Tan, C. Jagadish","doi":"10.1109/COMMAD.2012.6472346","DOIUrl":null,"url":null,"abstract":"GaAs/AlxGa1-xAs core-shell nanowires were grown by metal organic chemical vapour deposition with Au-catalysed GaAs cores. Cross-section transmission electron microscope bright field images show that the tapering at bottom of the nanowires is mainly caused by GaAs cap growth. Time-resolved photo-luminescence measurements of single nanowires were taken at room temperature and a minority carrier lifetime of (1.02±0.43) ns was obtained for single nanowires with AlxGa1-xAs shell grown at 750°C. A close correlation between the shell growth temperature and minority carrier lifetime has also been observed.","PeriodicalId":136573,"journal":{"name":"COMMAD 2012","volume":"19 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Improvement of minority carrier lifetime in GaAs/AlxGa1−xAs core-shell nanowires\",\"authors\":\"N. Jiang, P. Parkinson, Q. Gao, J. Wong-Leung, S. Breuer, H. Tan, C. Jagadish\",\"doi\":\"10.1109/COMMAD.2012.6472346\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"GaAs/AlxGa1-xAs core-shell nanowires were grown by metal organic chemical vapour deposition with Au-catalysed GaAs cores. Cross-section transmission electron microscope bright field images show that the tapering at bottom of the nanowires is mainly caused by GaAs cap growth. Time-resolved photo-luminescence measurements of single nanowires were taken at room temperature and a minority carrier lifetime of (1.02±0.43) ns was obtained for single nanowires with AlxGa1-xAs shell grown at 750°C. A close correlation between the shell growth temperature and minority carrier lifetime has also been observed.\",\"PeriodicalId\":136573,\"journal\":{\"name\":\"COMMAD 2012\",\"volume\":\"19 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"COMMAD 2012\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/COMMAD.2012.6472346\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"COMMAD 2012","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/COMMAD.2012.6472346","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Improvement of minority carrier lifetime in GaAs/AlxGa1−xAs core-shell nanowires
GaAs/AlxGa1-xAs core-shell nanowires were grown by metal organic chemical vapour deposition with Au-catalysed GaAs cores. Cross-section transmission electron microscope bright field images show that the tapering at bottom of the nanowires is mainly caused by GaAs cap growth. Time-resolved photo-luminescence measurements of single nanowires were taken at room temperature and a minority carrier lifetime of (1.02±0.43) ns was obtained for single nanowires with AlxGa1-xAs shell grown at 750°C. A close correlation between the shell growth temperature and minority carrier lifetime has also been observed.
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