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Growth and Characterization of Znsete Epilayers and Superlattices

Published online by Cambridge University Press:  28 February 2011

M. C. Phillips ,
Y. Rajakarunanayake ,
J. O. Mccaldin ,
R. H. Miles ,
D. H. Chow ,
D. A. Collins  and
T. C. Mcgill
M. C. Phillips
Affiliation:
T. J. Watson, Sr., Laboratory of Applied Physics, Caltech, Pasadena, CA 91125
Y. Rajakarunanayake
Affiliation:
T. J. Watson, Sr., Laboratory of Applied Physics, Caltech, Pasadena, CA 91125
J. O. Mccaldin
Affiliation:
T. J. Watson, Sr., Laboratory of Applied Physics, Caltech, Pasadena, CA 91125
R. H. Miles
Affiliation:
Hughes Research Laboratories, Malibu, CA 90265
D. H. Chow
Affiliation:
T. J. Watson, Sr., Laboratory of Applied Physics, Caltech, Pasadena, CA 91125
D. A. Collins
Affiliation:
T. J. Watson, Sr., Laboratory of Applied Physics, Caltech, Pasadena, CA 91125
T. C. Mcgill
Affiliation:
T. J. Watson, Sr., Laboratory of Applied Physics, Caltech, Pasadena, CA 91125
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Abstract

Little has been published about Te-rich ZnSexTel−x grown at low temperatures, in spite of some successes in the fabrication of wide band gap light emitting devices from ZnSeTe alloys grown at higher temperatures. We present x-ray diffraction and photoluminescence (PL) spectra for ZnSeTe epilayers and ZnSeTe/ZnTe superlattices grown by molecular beam epitaxy (MBE). These we compare with measurements on ZnTe, ZnSe and CdZnTe epilayers and on CdZnTe/ZnTe superlattices grown under similar conditions and also with data published for ZnSeTe alloys grown at high temperatures. Equilibrium phase diagrams for the ZnSeTe alloy system suggest a large miscibility gap at MBE growth temperatures; this may account for some unusual features in the (PL) spectra and for large line widths in the x-ray data. In spite of these possible miscibility problems, we find that ZnSeTe alloys luminesce brightly.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 198: Symposium V – Epitaxial Heterostructures , 1990 , 439
Copyright
Copyright © Materials Research Society 1990

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References

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