High-Performance 2D MoS 2 Phototransistor for Photo Logic Gate and Image Sensor

Young Tack Lee, Ji Hoon Kang, Kisung Kwak, Jongtae Ahn, Hyun Tae Choi, Byeong Kwon Ju, Seyed Hossein Shokouh, Seongil Im, Min Chul Park, Do Kyung Hwang

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Two-dimensional (2D) MoS 2 is a representative n-type transition-metal dichalcogenide (TMD) semiconductor that has great potential for future nanoscale electronic and optoelectronic applications. Here, we report a high-performance MoS 2 phototransistor that exhibits a photoresponse in the 400-700 nm range with the maximum responsivity of over 1 × 10 4 A/W. As a more sophisticated optoelectronic application than a simple unit device, it is implemented in a photoinverter (NOT logic gate) connected to an external resistor, which clearly shows photoinduced static and dynamic characteristics. Furthermore, we demonstrate a prototype visible imager using the MoS 2 photoinverter as imaging pixels as an excellent example of advanced developments in an optoelectronic system based on the 2D semiconductors.

Original languageEnglish
Pages (from-to)4745-4750
Number of pages6
JournalACS Photonics
Volume5
Issue number12
DOIs
Publication statusPublished - 2018 Dec 19

Bibliographical note

Funding Information:
D.K.H. acknowledges the financial support from the Korea Institute of Science and Technology (KIST) Institution Program (Grant Nos. 2E28180 and 2E28200) and the National Research Foundation of Korea (NRF) (Grant No. 2017R1A2B2005640). S.I. acknowledges the financial support from NRF (SRC program: Grant No. 2017R1A5A1014862 vdWMRC center). This research was supported by Basic Science Research Program through the NRF funded by the Ministry of Education (2010-0020163) (Y.T.L.). M.C.P. acknowledges the financial support from the Ministry of Culture, Sports and Tourism (MCST) and the Korea Creative Content Agency (KOCCA) in the Culture Technology (CT) Research & Development Program 2018 (R2017060005, Development of AR Platform based on Hologram).

Funding Information:
D.K.H. acknowledges the financial support from the Korea Institute of Science and Technology (KIST) Institution Program (Grant Nos. 2E28180 and 2E28200) and the National Research Foundation of Korea (NRF) (Grant No. 2017R1A2B2005640). S.I. acknowledges the financial support from NRF (SRC program: Grant No. 2017R1A5A1014862, vdWMRC center). This research was supported by Basic Science Research Program through the NRF funded by the Ministry of Education (2010-0020163) (Y.T.L.). M.C.P. acknowledges the financial support from the Ministry of Culture, Sports and Tourism (MCST) and the Korea Creative Content Agency (KOCCA) in the Culture Technology (CT) Research & Development Program 2018 (R2017060005, Development of AR Platform based on Hologram).

Publisher Copyright:
Copyright © 2018 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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