Light-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS2 mixed-dimensional phototransistors

Mix-dimensional van der Waals heterostructures (vdWHs) have inspired worldwide interests and efforts in the field of advanced electronics and optoelectronics. The fundamental understanding of interfacial charge transfer is of vital importance for guiding the design of functional optoelectronic appli...

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Autores principales:	Ziwei Li, Wen Yang, Ming Huang, Xin Yang, Chenguang Zhu, Chenglin He, Lihui Li, Yajuan Wang, Yunfei Xie, Zhuoran Luo, Delang Liang, Jianhua Huang, Xiaoli Zhu, Xiujuan Zhuang, Dong Li, Anlian Pan
Formato:	article
Lenguaje:	EN
Publicado:	Institue of Optics and Electronics, Chinese Academy of Sciences 2021
Materias:	heterostructure phototransistor mos2 quantum dots Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/11a602a7c6bf499c8f9785166ec8e7fc
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spelling	oai:doaj.org-article:11a602a7c6bf499c8f9785166ec8e7fc2021-11-17T07:53:29ZLight-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS2 mixed-dimensional phototransistors2096-457910.29026/oea.2021.210017https://doaj.org/article/11a602a7c6bf499c8f9785166ec8e7fc2021-09-01T00:00:00Zhttp://www.oejournal.org/article/doi/10.29026/oea.2021.210017https://doaj.org/toc/2096-4579Mix-dimensional van der Waals heterostructures (vdWHs) have inspired worldwide interests and efforts in the field of advanced electronics and optoelectronics. The fundamental understanding of interfacial charge transfer is of vital importance for guiding the design of functional optoelectronic applications. In this work, type-II 0D-2D CdSe/ZnS quantum dots/MoS2 vdWHs are designed to study the light-triggered interfacial charge behaviors and enhanced optoelectronic performances. From spectral measurements in both steady and transient states, the phenomena of suppressed photoluminescence (PL) emissions, shifted Raman signals and changed PL lifetimes provide strong evidences of efficient charge transfer at the 0D-2D interface. A series of spectral evolutions of heterostructures with various QDs overlapping concentrations at different laser powers are analyzed in details, which clarifies the dynamic competition between exciton and trion during an efficient doping of 3.9×1013 cm−2. The enhanced photoresponses (1.57×104 A·W–1) and detectivities (2.86×1011 Jones) in 0D/2D phototransistors further demonstrate that the light-induced charge transfer is still a feasible way to optimize the performance of optoelectronic devices. These results are expected to inspire the basic understanding of interfacial physics at 0D/2D interfaces, and shed the light on promoting the development of mixed-dimensional optoelectronic devices in the near future.Ziwei LiWen YangMing HuangXin YangChenguang ZhuChenglin HeLihui LiYajuan WangYunfei XieZhuoran LuoDelang LiangJianhua HuangXiaoli ZhuXiujuan ZhuangDong LiAnlian PanInstitue of Optics and Electronics, Chinese Academy of Sciencesarticleheterostructurephototransistormos2quantum dotsOptics. LightQC350-467ENOpto-Electronic Advances, Vol 4, Iss 9, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heterostructure phototransistor mos2 quantum dots Optics. Light QC350-467
spellingShingle	heterostructure phototransistor mos2 quantum dots Optics. Light QC350-467 Ziwei Li Wen Yang Ming Huang Xin Yang Chenguang Zhu Chenglin He Lihui Li Yajuan Wang Yunfei Xie Zhuoran Luo Delang Liang Jianhua Huang Xiaoli Zhu Xiujuan Zhuang Dong Li Anlian Pan Light-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS2 mixed-dimensional phototransistors
description	Mix-dimensional van der Waals heterostructures (vdWHs) have inspired worldwide interests and efforts in the field of advanced electronics and optoelectronics. The fundamental understanding of interfacial charge transfer is of vital importance for guiding the design of functional optoelectronic applications. In this work, type-II 0D-2D CdSe/ZnS quantum dots/MoS2 vdWHs are designed to study the light-triggered interfacial charge behaviors and enhanced optoelectronic performances. From spectral measurements in both steady and transient states, the phenomena of suppressed photoluminescence (PL) emissions, shifted Raman signals and changed PL lifetimes provide strong evidences of efficient charge transfer at the 0D-2D interface. A series of spectral evolutions of heterostructures with various QDs overlapping concentrations at different laser powers are analyzed in details, which clarifies the dynamic competition between exciton and trion during an efficient doping of 3.9×1013 cm−2. The enhanced photoresponses (1.57×104 A·W–1) and detectivities (2.86×1011 Jones) in 0D/2D phototransistors further demonstrate that the light-induced charge transfer is still a feasible way to optimize the performance of optoelectronic devices. These results are expected to inspire the basic understanding of interfacial physics at 0D/2D interfaces, and shed the light on promoting the development of mixed-dimensional optoelectronic devices in the near future.
format	article
author	Ziwei Li Wen Yang Ming Huang Xin Yang Chenguang Zhu Chenglin He Lihui Li Yajuan Wang Yunfei Xie Zhuoran Luo Delang Liang Jianhua Huang Xiaoli Zhu Xiujuan Zhuang Dong Li Anlian Pan
author_facet	Ziwei Li Wen Yang Ming Huang Xin Yang Chenguang Zhu Chenglin He Lihui Li Yajuan Wang Yunfei Xie Zhuoran Luo Delang Liang Jianhua Huang Xiaoli Zhu Xiujuan Zhuang Dong Li Anlian Pan
author_sort	Ziwei Li
title	Light-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS2 mixed-dimensional phototransistors
title_short	Light-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS2 mixed-dimensional phototransistors
title_full	Light-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS2 mixed-dimensional phototransistors
title_fullStr	Light-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS2 mixed-dimensional phototransistors
title_full_unstemmed	Light-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS2 mixed-dimensional phototransistors
title_sort	light-triggered interfacial charge transfer and enhanced photodetection in cdse/zns quantum dots/mos2 mixed-dimensional phototransistors
publisher	Institue of Optics and Electronics, Chinese Academy of Sciences
publishDate	2021
url	https://doaj.org/article/11a602a7c6bf499c8f9785166ec8e7fc
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Light-triggered interfacial charge transfer and enhanced photodetection in CdSe/ZnS quantum dots/MoS2 mixed-dimensional phototransistors

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