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- Title
Novel Emitting-Color Tunable Phosphors Ba<sub>3</sub> Y<sub>2</sub>( BO<sub>3</sub>)<sub>4</sub>: Ce<sup>3+</sup>, Tb<sup>3+</sup> with Efficient Energy Transfer for Near- UV Light-Emitting Diodes.
- Authors
Han, Bing; Zhang, Jie; Lü, Yinhua; Johnson, D. W.
- Abstract
This work presents the ultraviolet-visible spectroscopic properties of Ba3 Y2( BO3)4: Ce3+, Tb3+ phosphors prepared by a high-temperature solid-state reaction. Under ultraviolet light excitation, tunable emission from the blue to yellowish-green region was obtained by changing the doping concentration of Tb3+ when the content of Ce3+ is fixed. The efficient energy transfer process between Ce3+ and Tb3+ ions was observed and confirmed in terms of corresponding excitation and emission spectra. In addition, the energy transfer mechanism between Ce3+ and Tb3+ was proved to be dipole-dipole interaction in Ba3 Y2( BO3)4: Ce3+, Tb3+ phosphor. By utilizing the principle of energy transfer and appropriate tuning of Ce3+/ Tb3+ contents, Ba3 Y( BO3)4: Ce3+, Tb3+ phosphors can have potential application as an UV-convertible phosphor for near- UV excited white light-emitting diodes.
- Subjects
ULTRAVIOLET radiation; ENERGY transfer; IONS; LIGHT emitting diodes; SOLAR cells
- Publication
Journal of the American Ceramic Society, 2013, Vol 96, Issue 1, p179
- ISSN
0002-7820
- Publication type
Article
- DOI
10.1111/j.1551-2916.2012.05464.x