The synthesis and photoluminescence of nanocrystalline Zr{sub 0.80}Zn{sub 0.20}O{sub 1.80+{delta}} powders via glycine nitrate process
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 (China)
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
- Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026 (China)
Nanocrystalline Zr{sub 1-x}Zn {sub x}O{sub 2-x+{delta}} (x = 0, 0.20, 1.00) powders were synthesized by glycine nitrate process route and the Zr{sub 0.80}Zn{sub 0.20}O{sub 1.80+{delta}} powders were calcined in the temperature range between 500 and 800 deg. C. An intense UV emission band centered at 382 nm with excitation at 292 nm has been observed in Zr{sub 0.80}Zn{sub 0.20}O{sub 1.80+{delta}} powders calcined at 600 deg. C, and X-ray diffraction analysis indicates that the powders exhibit a single phase with cubic ZrO{sub 2} structure with the average grain size is about 7 nm. According to the results of photoluminescence and annealing experiments in different atmospheres, it can be proposed that the intense UV emission band is related to the defect states involving oxygen vacancies. Compared with pure ZrO{sub 2}, the incorporation of Zn{sup 2+} ions enhances UV emission intensity. Our experimental results also show that photoluminescence intensity depends on the concentration of defects and the peak position is related to the crystal phase structure. The novel strong UV emission properties of this material may be very interesting for further application.
- OSTI ID:
- 20891671
- Journal Information:
- Materials Research Bulletin, Vol. 41, Issue 4; Other Information: DOI: 10.1016/j.materresbull.2005.09.027; PII: S0025-5408(05)00374-0; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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