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The effects of zinc on the characteristics of (Zn,Ca)TiO3:Pr3+ phosphors
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- Authors
- Sung Mook Chung, Seung-Youl Kang, Jae-Heon Shin, Woo-Seok Cheong, Chi-Sun Hwang, Kyoung Ik Cho, Seung Jae Lee, Young Jin Kim
- Issue Date
- 2011-07
- Citation
- Journal of Crystal Growth, v.326, no.1, pp.94-97
- ISSN
- 0022-0248
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- The effects of zinc on the zinc-doped CaTiO3:Pr3 phosphors have been investigated by varying the zinc concentrations from 0 to 100 mol%. The variation of zinc concentration influences the crystallinity and morphology of the phosphors. The crystallinity and PL intensity increase as zinc content increases from 0 to 25 mol%. (Zn,Ca)TiO3:Pr3 at 25 mol% Zn exhibits nearly 3.6 times enhanced PL intensity compared to CaTiO3:Pr3. Moreover, the red emitting phosphor developed in this study can be very effectively excited at the wavelengths of 400 nm. We think that (Zn,Ca)TiO3:Pr3 can be used as a complementary phosphor in the red region for the white LEDs. © 2011 Elsevier B.V. All rights reserved.
- KSP Keywords
- 5 mol%(MgO), PL intensity, Red emitting, Zinc-doped, white LED