GaN growth by metallorganic vapor phase epitaxy: A comparison of modeling and experimental measurements

S. A. Safvi, J. M. Redwing, M. A. Tischler, T. F. Kuech

Research output: Contribution to journalReview article

81 Scopus citations

Abstract

A model for the growth of gallium nitride in a vertical metallorganic vapor phase epitaxy (MOVPE) reactor is presented and compared to experimental growth rate measurements. For a mixture of nondilute gases, the flow, temperature, and concentration profiles are predicted using recent kinetic data. Growth rates are predicted based on simple reaction mechanisms and compared with those obtained experimentally. These comparative results show that the growth of GaN epi layers proceeds through an intermediate adduct of trimethylgallium and ammonia. Loss of adduct species due to oligmerization leads to the lowering of the growth rate. Quantification of this loss of reacting species is made based on experimentally observed growth rates. An apparent chemistry model is presented based on the salient features of GaN MOVPE. Process conditions are perturbed to obtain trends in growth rate and uniformity in order to demonstrate the utility of such a model in optimizing the GaN MOVPE process.

Original languageEnglish (US)
Pages (from-to)1789-1796
Number of pages8
JournalJournal of the Electrochemical Society
Volume144
Issue number5
DOIs
StatePublished - May 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'GaN growth by metallorganic vapor phase epitaxy: A comparison of modeling and experimental measurements'. Together they form a unique fingerprint.

  • Cite this