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Nonstoichiometry and defects in III–V compounds

Authors
Journal
Materials Science in Semiconductor Processing
1369-8001
Publisher
Elsevier
Publication Date
Volume
6
Identifiers
DOI: 10.1016/j.mssp.2003.07.026
Disciplines
  • Chemistry

Abstract

Abstract The deviation from stoichiometry or nonstoichiometry characterises a homogeneity range of chemical compounds. It is determined as the difference in the nonmetal- to metal atoms ratio between a real A n B m+ δ ( δ><0) and stoichiometric A n B m composition. Nonstoichiometry creates defects which have an effect on all properties of a crystal. The classification of defect is given. The enthalpies and entropies of quasi-chemical reactions describing the defects composition of III–V compounds are presented and give the possibility to estimate the concentration of the major defects for the solubility limits of III–V compounds.

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