Excitonic emissions from hexagonal GaN epitaxial layers

S. Chichibu, T. Azuhata, T. Sota, S. Nakamura

Research output: Contribution to journalArticle

166 Citations (Scopus)

Abstract

Excitonic photoluminescence (PL) peaks from hexagonal GaN epilayers were investigated making a connection with the analysis of the photoreflectance spectra. Free exciton emissions associated with transitions from the conduction (Γ7c) band to the A (Γ9v) and B (Γ7uv) valence bands are dominant above 100 K. Values of the full widths at half maximum of them were smaller than the thermal energy kBT up to room temperature, which suggests the dominance of excitons in the PL spectra

Original languageEnglish
Pages (from-to)2784-2786
Number of pages3
JournalJournal of Applied Physics
Volume79
Issue number5
DOIs
Publication statusPublished - 1996 Mar 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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