{"title":"Photoconductivity enhancement in MoS2 and WSe2 hybrids aided by light-absorbing carbon-based zero-dimensional quantum dots","authors":"K. Jayanand, A. Kaul","doi":"10.1109/SENSORS47087.2021.9639760","DOIUrl":null,"url":null,"abstract":"In this study, we present the study of van der Waal (vdW) hybrid structure of zero-dimensional graphene quantum dots (GQDs) and fullerene (C60) in conjunction with two-dimensional molybdenum disulphide (MoS2) and tungsten diselenide (WSe2) semiconducting transition metal dichalcogenides (TMDs). The vdW hybrid structures were characterized by Raman and photoluminescence (PL) spectroscopy which have revealed n-type doping occurring in MoS2 after decoration of GQDs, and a p-type doping occurring in WSe2 after decoration of C60. After outlining the fabrication of our 0D-2D heterostructure photodetectors, their photo response to incoming radiation was measured using broadband illumination which has revealed a two-fold increase in photo response in MoS2 and a three-fold increase in WSe2 after decoration with GQDs and C60, respectively. Our results presented here provide insights into 2D and 0D-based hybrid structures, thus enabling platform for high-performance photodetectors.","PeriodicalId":6775,"journal":{"name":"2021 IEEE Sensors","volume":"6 1","pages":"1-4"},"PeriodicalIF":0.0000,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE Sensors","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SENSORS47087.2021.9639760","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
In this study, we present the study of van der Waal (vdW) hybrid structure of zero-dimensional graphene quantum dots (GQDs) and fullerene (C60) in conjunction with two-dimensional molybdenum disulphide (MoS2) and tungsten diselenide (WSe2) semiconducting transition metal dichalcogenides (TMDs). The vdW hybrid structures were characterized by Raman and photoluminescence (PL) spectroscopy which have revealed n-type doping occurring in MoS2 after decoration of GQDs, and a p-type doping occurring in WSe2 after decoration of C60. After outlining the fabrication of our 0D-2D heterostructure photodetectors, their photo response to incoming radiation was measured using broadband illumination which has revealed a two-fold increase in photo response in MoS2 and a three-fold increase in WSe2 after decoration with GQDs and C60, respectively. Our results presented here provide insights into 2D and 0D-based hybrid structures, thus enabling platform for high-performance photodetectors.