학술논문
X-Ray Luminescence of ZnO Tetrapods Grown in the Presence of Copper and Gold Admixtures in Initial Charge.
Document Type
Article
Author
Source
Subject
*X-rays
*X-ray spectra
*COPPER powder
*LUMINESCENCE
*TETRAPODS
*COPPER
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Language
ISSN
0030-400X
Abstract
We investigated the morphology and luminescent properties of ZnO tetrapod powders with copper and gold admixtures, obtained by carbothermal pyrolysis. A broad band in the region of 450–650 nm dominates in the X-ray luminescence spectrum of the samples. There is also a weak edge luminescence band with a maximum at 391 nm. Kinetic measurements showed the presence of both fast (~1 ns) and slow (~850 ns) luminescence components, and the fast component, as a rule, did not exceed 1% of the integrated intensity. The used doping method does not result in the incorporation of copper and gold admixtures into the ZnO lattice. The presence of copper at a concentration of up to 9% does not affect the morphology or luminescence properties of ZnO tetrapods, while gold has such an effect even at a concentration close to 1%. [ABSTRACT FROM AUTHOR]