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Published online by Cambridge University Press: 21 February 2011
The growth and characterization of heteroepitaxial ZnSe and both rock salt and zinc blende MnS on (100) GaAs substrates is described. The ZnSe layers were grown using a novel thermal cyclic annealing procedure, and exhibit the narrowest double crystal X-ray diffraction rocking curves (28 arc sec FWHM) and free exciton low temperature photoluminescence peaks (0.93 meV FWHM) ever reported. Growth of thin (~300 Å) layers of metastable zinc blende MnS is achieved for the first time using ZnSe buffer layers and low temperature growth. The material is characterized using low temperature and room temperature photoluminescence, X-ray diffraction, and high resolution transmission electron microscopy.