Electrical properties and spectra of deep centers in GaN p-i-n rectifier structures

  • A. Y. Polyakov
  • , N. B. Smirnov
  • , A. V. Govorkov
  • , A. P. Zhang
  • , F. Ren
  • , S. J. Pearton
  • , J. I. Chyi
  • , T. E. Nee
  • , C. C. Chou
  • , C. M. Lee

Research output: Contribution to journalJournal Article peer-review

Abstract

GaN p-i-n rectifiers with 4 μm thick i-layers show typical reverse breakdown voltages of 100-600 V. We have studied the temperature dependence of current-voltage characteristics in these diodes, along with hole diffusion lengths and the deep level defects present. Generally we find that i-layer background doping varies significantly (from <1014 cm-3 to 2-3 × 1016 cm-3), which influences the current conduction mechanism. The hole diffusion lengths were in the range 0.6-0.8 μm, while deep level concentrations were ∼1016 cm-3.

Original languageEnglish
Article number3
Pages (from-to)147-155
Number of pages9
JournalJournal of Electronic Materials
Volume30
Issue number3
DOIs
StatePublished - 03 2001
Externally publishedYes

Keywords

  • C-V measurements
  • DLTS
  • Deep centers
  • GaN
  • I-V measurements
  • P-i-n rectifiers

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