Dynamic activity of dislocations in gallium phosphide

Ichiro Yonenaga, Koji Sumino

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Dynamic activities of α, β, and screw dislocations in a GaP crystal containing sulphur as the main impurity at a concentration of 7×1017 cm-3 are investigated as a function of stress and temperature by means of the etch pit technique. Generation of all types of dislocations from a surface scratch is found to be suppressed at temperatures higher than 500°C and is interpreted in terms of dislocation locking due to impurities and/or impurity-defect complexes as has been observed in GaAs and InP. α dislocations move faster than β and screw dislocations and their velocities are expressed with the same type of empirical equation as a function of the stress and the temperature as those in other semiconductors. Roughly speaking, dislocations in GaP move at velocities lower than those in GaAs by about two orders of magnitude.

Original languageEnglish
Pages (from-to)1681-1685
Number of pages5
JournalJournal of Applied Physics
Issue number4
Publication statusPublished - 1993

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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