期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 344, 期 1-2, 页码 280-284出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-8388(02)00369-9
关键词
ZnO : Eu(III); luminescence; experimental intensity parameter
ZnO:Eu3+ (0.1 and 3 at%) with average particle size of 500 nm were prepared by the Pechini method. Photoluminescence spectroscopy evidences that there is no energy transfer between ZnO and Eu3+ ion. The emission spectrum at 77 K shows that Eu3+ ions occupy at least three different sites in ZnO:Eu 3 at% sample. The experimental intensity parameter Omega(2) indicates that Eu3+ ions in the sample doped with 3 at% occupy sites where 4-configurational levels can better mix with opposite-parity states than those in the sample doped with 0.1 at%. (C) 2002 Elsevier Science B.V. All rights reserved.
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