학술논문
EFFECT OF SUBSTRATE TEMPERATURE ON THE STRUCTURAL AND THE OPTICAL PROPERTIES OFCdTe(100) EPITAXIAL FILMS GROWN ONGaAs(100) SUBSTRATES
Document Type
redif-article
Author
Source
World Scientific Publishing Co. Pte. Ltd., Surface Review and Letters (SRL). 14(04):755-759
Subject
Language
English
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.