Structural and optical properties of GaxIn1-xP layers grown by chemical beam epitaxy

Tae Yeon Seong, Jung Ja Yang, Mee Yi Ryu, Jong In Song, Phil W. Wu

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9 Citations (Scopus)

Abstract

Chemical beam epitaxial (CBE) GaxIn1-xP layers (x ≈ 0.5) grown on (001) GaAs substrates at temperatures ranging from 490 to 580°C have been investigated using transmission electron diffraction (TED), transmission electron microscopy, and photoluminescence (PL). TED examination revealed the presence of diffuse scattering 1/2{111}B positions, indicating the occurrence of typical CuPt-type ordering in the GaInP CBE layers. As the growth temperature decreased from 580 to 490°C, maxima in the intensity of the diffuse scattering moved from 1/2{111)B to 1/2{-1+δ,1-δ,0) positions, where δ is a positive value. As the growth temperature increased from 490 to 550°C, the maxima in the diffuse scattering intensity progressively approached positions of 1/2{110), i.e., the value of δ decreased from 0.25 to 0.17. Bandgap reduction (∼45 meV) was observed in the CBE GaInP layers and was attributed to the presence of ordered structures.

Original languageEnglish
Pages (from-to)409-413
Number of pages5
JournalJournal of Electronic Materials
Volume27
Issue number5
DOIs
Publication statusPublished - 1998 May
Externally publishedYes

Keywords

  • Chemical beam epitaxy (CBE)
  • GaInP
  • Ordering
  • Photoluminescence (PL) transmission electron microscopy (TEM)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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