Ultrasensitive Hybrid MoS2-ZnCdSe Quantum Dot Photodetectors with High Gain

doi:10.1021/acsami.9b03971

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	Ultrasensitive Hybrid MoS2-ZnCdSe Quantum Dot Photodetectors with High Gain
	Zhang Shukui; Wang Xudong; Chen Yan; Wu Guangjian; Tang Yicheng; Zhu Liqing; Wan Haoliang; Jiang Wei; Sun Liaoxin; Lin Tie
刊名	ACS APPLIED MATERIALS & INTERFACES
	2019
卷号	11 期号:26 页码:23667-23672
关键词	MoS2 transition-metal dichalcogenides quantum dots hybrid 2D-0D photodetector energy transfer
DOI	10.1021/acsami.9b03971
英文摘要	Recently, two-dimensional (2D) materials, especially transition-metal dichalcogenides (TMDCs), have attracted extensive interest owing to their potential applications in optoelectronics. Here, we demonstrate a hybrid 2D-zero-dimensional (OD) photodetector, which consists of a single-layer or few-layer molybdenum disulfide (MoS2) thin film and a thin layer of core/shell zinc cadmium selenide/zinc sulfide (ZnCdSe/ZnS) colloidal quantum dots (QDs). It is worth mentioning that the photoresponsivity of the hybrid 2D-0D photodetector is 3 orders of magnitude larger than the TMDC photodetector (from 10 to 10(4)A W-1). The detectivity of the hybrid structure detector is up to 10(12) Jones, and the gain is up to 10(5). Due to an effective energy transfer from the photoexcited QD sensitizing layer to MoS2 films, light absorption is enhanced and more excitons are generated. Thus, this hybrid 2D-0D photodetector takes advantage of high charge mobility in the MoS2 layer and efficient photon absorption/exciton generation in the QDs, which suggests their promising applications in the development of TMDC-based optoelectronic devices.
WOS记录号	WOS:000474670100083
内容类型	期刊论文
源URL	[http://202.127.2.71:8080/handle/181331/12381]
专题	上海技术物理研究所_上海技物所
推荐引用方式 GB/T 7714	Zhang Shukui,Wang Xudong,Chen Yan,et al. Ultrasensitive Hybrid MoS2-ZnCdSe Quantum Dot Photodetectors with High Gain[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(26):23667-23672.
APA	Zhang Shukui.,Wang Xudong.,Chen Yan.,Wu Guangjian.,Tang Yicheng.,...&Chu Junhao.(2019).Ultrasensitive Hybrid MoS2-ZnCdSe Quantum Dot Photodetectors with High Gain.ACS APPLIED MATERIALS & INTERFACES,11(26),23667-23672.
MLA	Zhang Shukui,et al."Ultrasensitive Hybrid MoS2-ZnCdSe Quantum Dot Photodetectors with High Gain".ACS APPLIED MATERIALS & INTERFACES 11.26(2019):23667-23672.