EFFECT OF SUBSTRATE TEMPERATURE ON THE STRUCTURAL AND THE OPTICAL PROPERTIES OFCdTe(100) EPITAXIAL FILMS GROWN ONGaAs(100) SUBSTRATES

D. U. Lee, J. H. Jung, T. W. Kim (), H. S. Lee, H. L. Park and K. H. Lee
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D. U. Lee: Research Institute of Information Display, Division of Electronics and Computer Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
J. H. Jung: Research Institute of Information Display, Division of Electronics and Computer Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
T. W. Kim: Research Institute of Information Display, Division of Electronics and Computer Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea
H. S. Lee: Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea
H. L. Park: Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea
K. H. Lee: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea

Surface Review and Letters (SRL), 2007, vol. 14, issue 04, 755-759

Abstract: CdTethin films were grown onGaAs(100) substrates by using molecular beam epitaxy at various temperatures. The results of the X-ray diffraction (XRD) patterns showed that the orientation of the grownCdTethin films was the (100) orientation. XRD patterns, atomic force microscopy images, high-resolution transmission electron microscopy (HRTEM) images, and photoluminescence spectra showed that the crystallinity ofCdTe(100) epilayers grown onGaAs(100) substrates was improved by increasing the substrate temperature. HRTEM images showed that misfit dislocations existed at theCdTe/GaAsheterointerface. These results can help improve understanding of the substrate temperature effect on the structural and the optical properties ofCdTe(100)/GaAs(100) heterostructures.

Keywords: CdTe/GaAsheterostructure; substrate temperature; structural property; optical property (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07010202

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