Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7994780 | Journal of Alloys and Compounds | 2018 | 8 Pages |
Abstract
A novel white-emitting ZnO@Eu2O3 core/shell nanomaterials was synthesized by a green chemical method. The temperature and pressure dependence of the photoluminescence (PL) transition associated with the fundamental bandgap of ZnO@Eu2O3 core/shell nanomaterials have been studied. The activation energy of ZnO@Eu2O3 is 0.27 eV, which is higher than the commercial Y2O3: Eu 3+. The near-bandedge emission is found to shift toward higher energy with applied pressure at a rate of 32.7 MeV/GPa with a small second-order term of â0.28 MeV/GPa2. The samples are very stable with white emission under 8 GPa, which are useful for white LEDs.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
M. Gao, J.C. Yao, C. Yan, X.F. Li, T.J. Hu, L. Chen, Y.X. Wang, Y.J. Zhang, H.L. Liu, Y. Liu, L.H. Cao, Y.T. Cao, J.H. Yang,