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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201702917
|2 doi
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|a pubmed24n0923.xml
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|a (DE-627)NLM277134048
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|a (NLM)29044833
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|a eng
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|a Tan, Haijie
|e verfasserin
|4 aut
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|a Lateral Graphene-Contacted Vertically Stacked WS2 /MoS2 Hybrid Photodetectors with Large Gain
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 18.07.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a A demonstration is presented of how significant improvements in all-2D photodetectors can be achieved by exploiting the type-II band alignment of vertically stacked WS2 /MoS2 semiconducting heterobilayers and finite density of states of graphene electrodes. The photoresponsivity of WS2 /MoS2 heterobilayer devices is increased by more than an order of magnitude compared to homobilayer devices and two orders of magnitude compared to monolayer devices of WS2 and MoS2 , reaching 103 A W-1 under an illumination power density of 1.7 × 102 mW cm-2 . The massive improvement in performance is due to the strong Coulomb interaction between WS2 and MoS2 layers. The efficient charge transfer at the WS2 /MoS2 heterointerface and long trapping time of photogenerated charges contribute to the observed large photoconductive gain of ≈3 × 104 . Laterally spaced graphene electrodes with vertically stacked 2D van der Waals heterostructures are employed for making high-performing ultrathin photodetectors
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|a Journal Article
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|a MoS2
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|a WS2
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|a charge transfer
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|a heterostructures
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|a photodetectors
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|a Xu, Wenshuo
|e verfasserin
|4 aut
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|a Sheng, Yuewen
|e verfasserin
|4 aut
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|a Lau, Chit Siong
|e verfasserin
|4 aut
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|a Fan, Ye
|e verfasserin
|4 aut
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|a Chen, Qu
|e verfasserin
|4 aut
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|a Tweedie, Martin
|e verfasserin
|4 aut
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|a Wang, Xiaochen
|e verfasserin
|4 aut
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|a Zhou, Yingqiu
|e verfasserin
|4 aut
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| 700 |
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|a Warner, Jamie H
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 29(2017), 46 vom: 21. Dez.
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|g volume:29
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|g number:46
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|u http://dx.doi.org/10.1002/adma.201702917
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