Published December 15, 1990 | Version v1
Journal article

Photoquenching phenomenon enhanced by proton irradiation in semi-insulating GaAs

  • 1. College of Engineering and Research Center of Ion Beam Technology, Hosei University, Koganei, Tokyo 184, Japan (Japan)
  • 2. Electrotechnical Laboratory, Tsukuba, Ibaraki 305, (Japan)
  • 3. The Institute of Physical and Chemical Research, Wako, Saitama 315-01, (Japan)

Description

In undoped semi-insulating GaAs, we have found that the quenching phenomena of photoconductance and infrared absorption are enhanced by proton irradiation above 1013 /cm2, accompanied by an increase in near-band-edge infrared absorption. These phenomena disappear with the annihilation of the proton-induced near-band absorption by annealing at 350 degree C. It is suggested that the enhanced photoquenching phenomena arise from the increase in the quenchable component due to the transition from the ionized midgap electron trap (EL2+) to the neutral EL20

Additional details

Publishing Information

Journal Title
Journal of Applied Physics
Journal Volume
68
Journal Issue
12
Series
J. Appl. Phys.
Journal Page Range
6517-6519
ISSN
0021-8979
CODEN
JAPIA