Self-annealing in neutron-irradiated algangan high electron mobility transistors

Hong Yeol Kim, Fan Ren, S. J. Pearton, Jihyun Kim

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The recovery at room temperature of neutron-irradiated (average neutron energy 9.8 MeV) AlGaNGaN high electron mobility transistors was studied by monitoring the electrical properties for a month. The initial changes in dc characteristics of the devices after neutron irradiation are consistent with the removal of free carriers by creation of deep levels in the bandgap. However, this lattice-displacement damage is unstable at room temperature and a self-annealing effect is observed. At a dose of 5.49× 1011 neutron cm2, the degradation of device drain-source current and transconductance was maximized one week after exposure to the neutron flux and was completely recovered three weeks after the irradiation.

Original languageEnglish
Pages (from-to)H173-H175
JournalElectrochemical and Solid-State Letters
Issue number5
Publication statusPublished - 2009

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Materials Science
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering


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