{"title":"Surface morphology formation of Ge layers on Si(111) under high-temperature annealing","authors":"K. E. Ponomarev, A. Shklyaev","doi":"10.1109/EDM.2014.6882464","DOIUrl":null,"url":null,"abstract":"Evolution of surface morphology of Ge layers on the Si(111) surface under high-temperature annealing is studied with scanning tunneling and electron microscopies. It is found that the morphology with three-dimensional Ge islands obtained by the Ge deposition at the relatively low temperatures of 450-500 °C transforms into a net of continuous ridges after annealing at 700-950 °C. This indicates that the annealing leads to the separation of Ge and Si phases. Such a transformation reduces simultaneously the Ge/Si interface and free surface areas. The calculations show that this provides the total energy reduction up to about 30%, leading to the formation of stable surface morphology.","PeriodicalId":332225,"journal":{"name":"2014 15th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2014-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 15th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EDM.2014.6882464","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Evolution of surface morphology of Ge layers on the Si(111) surface under high-temperature annealing is studied with scanning tunneling and electron microscopies. It is found that the morphology with three-dimensional Ge islands obtained by the Ge deposition at the relatively low temperatures of 450-500 °C transforms into a net of continuous ridges after annealing at 700-950 °C. This indicates that the annealing leads to the separation of Ge and Si phases. Such a transformation reduces simultaneously the Ge/Si interface and free surface areas. The calculations show that this provides the total energy reduction up to about 30%, leading to the formation of stable surface morphology.