{"title":"SiGe虚拟衬底上自组装Ge量子点的应变分布、电子能带结构和光学增益","authors":"S. Bose, W. Fan, C. Jian, D. Zhang, C. Tan","doi":"10.1109/ISTDM.2014.6874705","DOIUrl":null,"url":null,"abstract":"In this paper, we study one such possible structure - self assembled Ge QDs embedded on Si0.5Ge0.5 virtual substrate with the same capping layer. A wetting layer is considered to simulate the actual scenario. Then we conduct a theoretical study on the strain and electronic band structure of this model. We employ the valence force field (VFF) method using Keating potential to estimate the strain followed by 8 band k·p method to calculate the electronic band structure taking the Γ valley into consideration. Finally we study the optical gain of the system for varying carrier concentrations.","PeriodicalId":371483,"journal":{"name":"2014 7th International Silicon-Germanium Technology and Device Meeting (ISTDM)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Strain profile, electronic band structure and optical gain of self-assembled Ge quantum dots on SiGe virtual substrate\",\"authors\":\"S. Bose, W. Fan, C. Jian, D. Zhang, C. Tan\",\"doi\":\"10.1109/ISTDM.2014.6874705\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, we study one such possible structure - self assembled Ge QDs embedded on Si0.5Ge0.5 virtual substrate with the same capping layer. A wetting layer is considered to simulate the actual scenario. Then we conduct a theoretical study on the strain and electronic band structure of this model. We employ the valence force field (VFF) method using Keating potential to estimate the strain followed by 8 band k·p method to calculate the electronic band structure taking the Γ valley into consideration. Finally we study the optical gain of the system for varying carrier concentrations.\",\"PeriodicalId\":371483,\"journal\":{\"name\":\"2014 7th International Silicon-Germanium Technology and Device Meeting (ISTDM)\",\"volume\":\"15 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-06-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2014 7th International Silicon-Germanium Technology and Device Meeting (ISTDM)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISTDM.2014.6874705\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 7th International Silicon-Germanium Technology and Device Meeting (ISTDM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISTDM.2014.6874705","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Strain profile, electronic band structure and optical gain of self-assembled Ge quantum dots on SiGe virtual substrate
In this paper, we study one such possible structure - self assembled Ge QDs embedded on Si0.5Ge0.5 virtual substrate with the same capping layer. A wetting layer is considered to simulate the actual scenario. Then we conduct a theoretical study on the strain and electronic band structure of this model. We employ the valence force field (VFF) method using Keating potential to estimate the strain followed by 8 band k·p method to calculate the electronic band structure taking the Γ valley into consideration. Finally we study the optical gain of the system for varying carrier concentrations.