{"title":"Time-resolved photoluminescence spectroscopy of CdTe/CdS/CdSe quantum dot complexes for photon upconversion","authors":"Eric Y. Chen, Diane G. Sellers, M. Doty","doi":"10.1109/PVSC.2016.7749568","DOIUrl":null,"url":null,"abstract":"Solution-processed core/multi-shell semiconductor quantum dots (QDs) could be tailored to facilitate the carrier separation and recombination mechanisms necessary to implement photon upconversion. We have synthesized CdTe cores capped with CdS and then CdSe shells. We present steady-state and time-resolved photoluminescence (PL) spectroscopy measurements of these QDs as a function of varying shell thicknesses. We quantify and report carrier emission energies and lifetimes as a function of shell addition and shell thicknesses. The results provide a framework for understanding how CdS and CdSe shells affect carrier separation and recombination dynamics, and thus inform the design of core/multi-shell QDs for efficient photon upconversion.","PeriodicalId":6524,"journal":{"name":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","volume":"26 1","pages":"0155-0159"},"PeriodicalIF":0.0000,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PVSC.2016.7749568","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
Solution-processed core/multi-shell semiconductor quantum dots (QDs) could be tailored to facilitate the carrier separation and recombination mechanisms necessary to implement photon upconversion. We have synthesized CdTe cores capped with CdS and then CdSe shells. We present steady-state and time-resolved photoluminescence (PL) spectroscopy measurements of these QDs as a function of varying shell thicknesses. We quantify and report carrier emission energies and lifetimes as a function of shell addition and shell thicknesses. The results provide a framework for understanding how CdS and CdSe shells affect carrier separation and recombination dynamics, and thus inform the design of core/multi-shell QDs for efficient photon upconversion.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
