| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10633017 | Optical Materials | 2011 | 4 Pages |
Abstract
We report an intense full-color emission originating from 5D0,1,2,3 to 7F0,1,2,3,4 transitions of Eu3+ in CaSc2O4 upon 395Â nm excitation. The emission spectra vary with increasing Eu3+ concentration, demonstrating tunable color coordinates from white to red region in the CIE chromaticity diagram. Considering the relaxation from 5DJ to 5DJâ1 through cross energy transfer, the Eu3+ concentration dependent emission spectra are well simulated based on the analysis of steady state rate equations and the measured lifetimes of the 5DJ levels. It is suggested that CaSc2O4:Eu3+ could be a potential single-phased full-color emitting phosphor for near-ultraviolet InGaN chip pumped white light emitting diodes.
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Ceramics and Composites
Authors
Zhendong Hao, Jiahua Zhang, Xia Zhang, Xiaojun Wang,