Nanostructured GaN: Microstructure and optical properties

M. Benaissa, M. José-Yacamán, J. Hernández, Bokhimi

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


In the present study, the microstructure and optical properties of a nanostructured composite that consists of nanocrystalline GaN imbedded in a poly)methyl methacrylate) thin film matrix (GaN/PMMA) are reported. X-ray powder diffraction and high-resolution transmission electron microscopy were performed to analyze the microstructure, while the optical properties were measured by optical absorption and photoluminescence. Microstructural analyses showed that GaN nanocrystallites imbedded in the PMMA matrix have a size of about 5.5 nm, and crystallize in the zinc-blende lattice (the lattice constant (Formula presented) nm) with a considerable fraction of structural defects such as nitrogen vacancies and stacking faults. Optical-absorption measurements indicate that the band-gap energy of the GaN/PMMA composite is approximately 3.51 eV.

Original languageEnglish (US)
Pages (from-to)17763-17767
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number24
StatePublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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