Radiation stability and in situ electrical stress healing of photodetection performance on α-In2Se3 based transistors

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this work, α-In2Se3 based transistors with channel widths of 20 μm have been irradiated with60Co γ-rays. The radiation induced photoresponsivity degradation, radiation stability, and time annealing effect on α-In2Se3 based transistor have been investigated. Both the radiation induced domain evolution and the time annealing effect decrease the photoresponsivity of α-In2Se3 based transistor. Phonon modes, domain structure, and surface topography of the α-In2Se3 nanoflakes have been investigated in details for revealing the mechanism of the photoresponsivity degradation. The results show that the surface topography damage of α-In2Se3 may be the main factor affecting the radiation stability in the time annealing. It is very interesting that the in-situ electric stress can heal the photoresponsivity decreased by the time annealing effect, because the captured free carriers can be freed by the voltage sweeping. Considering that the α-In2Se3 based transistors can still be used as photodetectors after an irradiation of 1 Mrad(Si) and a time annealing of one year, αIn2Se3 is promising for photodetector in extreme environmental conditions.

Original languageEnglish
Title of host publication2021 4th International Conference on Radiation Effects of Electronic Devices, ICREED 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665441681
DOIs
StatePublished - 2021
Externally publishedYes
Event4th International Conference on Radiation Effects of Electronic Devices, ICREED 2021 - Xi'an, China
Duration: 26 May 202129 May 2021

Publication series

Name2021 4th International Conference on Radiation Effects of Electronic Devices, ICREED 2021

Conference

Conference4th International Conference on Radiation Effects of Electronic Devices, ICREED 2021
Country/TerritoryChina
CityXi'an
Period26/05/2129/05/21

Keywords

  • Co γ-rays
  • Electrical stress
  • Photoelectricity
  • Radiation stability
  • α-In2Se3

Fingerprint

Dive into the research topics of 'Radiation stability and in situ electrical stress healing of photodetection performance on α-In2Se3 based transistors'. Together they form a unique fingerprint.

Cite this