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Growth and Characterization of Ternary and Quaternary Compounds of Iny (AlxGa1−x)1-yAs on (100) InP

  • W. F. Tseng (a1), J. Comas (a1), B. Steiner (a1), G. Metze (a2), A. Cornfeld (a2), P. B. Klein (a2), D. K. Gaskill (a3), W. Xia (a4) and S. S. Lau (a4)...

Abstract

The acquisition of RHEED oscillation information on (100) GaAs substrates is described for use in the growth of “lattice-matched] Iny (AlxGa1−x)1-Y As layers on (100) InP substrates with 0.52 < y < 0.53 and 0.00 < x < 1.00. The observed frequency of the RHEED oscillations on GaAs is the same as on InP, however, the measured lattice parameters of the grown layers are less than that of InP. The x-ray diffraction images show that the misfit dislocations perpendicular to the primary flats of 2” round (100) InP wafers are denser than the parallel ones. Photoluminescence (at 10K) and photoreflectance (at 300K) measurements on a composite layer structure of x=0, 0.2, 0.4, 0.6, 0.8 and 1 clearly show six distinct peaks with narrow FWHMs of less than 20 meV. The measured bandgaps increase linearly with the Al content.

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Growth and Characterization of Ternary and Quaternary Compounds of Iny (AlxGa1−x)1-yAs on (100) InP

  • W. F. Tseng (a1), J. Comas (a1), B. Steiner (a1), G. Metze (a2), A. Cornfeld (a2), P. B. Klein (a2), D. K. Gaskill (a3), W. Xia (a4) and S. S. Lau (a4)...

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