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High-gain phototransistors based on a CVD MoS2 monolayer

  • Wenjing Zhang
  • , Jing-Kai Huang
  • , Chang-Hsiao Chen
  • , Yung-Huang Chang
  • , Yuh-Jen Cheng
  • , Lain-Jong Li

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

A phototransistor based on a chemical vapor deposited (CVD) MoS<sub>2</sub> monolayer exhibits a high photoresponsivity (2200 A W<sup>-1</sup>) and an excellent photogain (5000). The presence of shallow traps contributes to the persistent photoconductivity. Ambient adsorbates act as p-dopants to MoS <sub>2</sub>, decreasing the carrier mobility, photoresponsivity, and photogain. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish
Pages (from-to)3456-3461
JournalAdvanced Materials
Volume25
Issue number25
DOIs
Publication statusPublished - 5 Jul 2013
Externally publishedYes

Bibliographical note

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Research Keywords

  • ambient air
  • molybdenum disulfides
  • photogain
  • phototransistors

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