Thermally stimulated-current observation of hole traps in undoped semi-insulating GaAs and their photoquenching behavior

Maki Suemitsu, Yoshitomo Sagae, Nobuo Miyamoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Detailed thermally stimulated-current measurements have been conducted on an undoped. semi-insulating GaAs crystal under 1.06 μm illumination at 15 K. By combining with Hall voltage measurements, we confirmed the presence of hole traps that show similar activation energies with the one proposed for the actuator level in the deep acceptor-mediated photoquenching model of EL2 [Suemitsu et al., Phys. Rev. B 52, 1666 (1995)]. The observed quenching of these hole traps suggests that the actuator level be, most likely, a part of the metastable complex.

Original languageEnglish
Pages (from-to)3139-3141
Number of pages3
JournalJournal of Applied Physics
Volume85
Issue number6
DOIs
Publication statusPublished - 1999 Mar 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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