Abstract
A comparative study of the 77K PL spectra of n-type GaAs single crystals, grown by the horizontal or Czochralski technique, shows that the former are crystallized from Ga-rich melts (although in equilibrium with 1 atm As-pressure) whereas the latter are pulled from As-rich melts (although the starting loads are mostly As-deficient). Besides the VGa, copper appears as the major compensating acceptor in these crystals. Association of Cu and/or VGa with VAs and/or donor atoms tends to neutralize this compensation. This work shows how the above interaction explains the empirically determined relation ND∝(ND-NA), which is shown to hold for crystals of various sources.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
