Journal
MATERIALS LETTERS
Volume 59, Issue 24-25, Pages 2990-2993Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2005.05.001
Keywords
GeO2/ZnGeO3; chain-like structures; characterization; spheroidization; photoluminescence
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Bulk-quantity of uniform chain-like GeO2/ZnGeO3 structures has been achieved by a thermal evaporation of a Ge and Zn mixture, X-ray diffraction (XRD) analysis indicates the product is mainly composed of GeO2 mixed with a small proportion of ZnGeO3. Scanning electron microscopy (SEM) characterizations show that the structures consist of particle chains with an almost uniform distance. between each particle. The chain-like structures consist of two parts: the ellipsoidal part and the linear part. Energy-dispersive spectroscopy (EDS) reveals that different parts of the structure have different compositions. Spheroidization of Zn/Ge droplets seems to be the main growth mechanism of these structures. Room-temperature photoluminescence (PL) measurement shows that the synthesized structures have a strong emission band at a wavelength of 488.5 nm. (C) 2005 Elsevier B.V All rights reserved.
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