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Vol. 27 No. 4 (2015): Vol 27 Issue 4

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Light-Emission Properties and Internal Energy Transfer Phenomenon of Calcium Zirconate Phosphor Doped with Mn2+

https://doi.org/10.14233/ajchem.2015.17477
Bai-Bin Wang
Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, No. 415, Jiangong Road, Sanmin Dist., Kaohsiung City 807, Taiwan
Wein-Duo Yang
Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, No. 415, Jiangong Road, Sanmin Dist., Kaohsiung City 807, Taiwan

Corresponding Author(s) : Wein-Duo Yang

ywd@kuas.edu.tw

Asian Journal of Chemistry, Vol. 27 No. 4 (2015): Vol 27 Issue 4

Abstract

This study employed a cellulose-citric acid method to synthesize CaZrO3:Mn2+ phosphor to examine the light-emission properties, as well as the distance and mechanism of energy transfer between Mn2+ ions. The crystal structure was analyzed using X-ray powder diffraction. The appearance and element composition of the particles were observed using a field emission scanning electron microscopy with energy-dispersive X-ray spectroscopy and the excitation and emission spectra of the phosphors were recorded using a fluorescence spectrophotometer. The results indicate that the addition of Mn2+ did not influence the crystal structure of CaZrO3:Mn2+ phosphor and light emission can be attributed to the replacement between Mn2+ ions and Zr4+ ions, forming the emission center. The maximum distance for energy transfer between Mn2+ ions was estimated to be 62.72 Å. Finally, the results verify Dexter's theory that the mechanism of energy transfer between Mn2+ ions is an electric quadrupole interaction.

Keywords

Distance for energy transfer Mechanism of energy transfer Electric quadrupole interaction
Wang, B.-B., & Yang, W.-D. (2015). Light-Emission Properties and Internal Energy Transfer Phenomenon of Calcium Zirconate Phosphor Doped with Mn2+. Asian Journal of Chemistry, 27(4), 1265–1268. https://doi.org/10.14233/ajchem.2015.17477
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