Tunable single-phased white-emitting Sr3Y(PO4)(3):Dy3+ phosphors for near-ultraviolet white light-emitting diodes
- Authors
- Seo, Yeon Woo; Park, Sung Heum; Chang, Seo Hyoung; Jeong, Jung Hyun; Kim, Kwang Ho; Bae, Jong-Seong
- Issue Date
- Aug-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Sr3Y(PO4)(3); Dy3+; Luminescence; White LED; Phosphors
- Citation
- CERAMICS INTERNATIONAL, v.43, no.11, pp 8497 - 8501
- Pages
- 5
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 43
- Number
- 11
- Start Page
- 8497
- End Page
- 8501
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/56857
- DOI
- 10.1016/j.ceramint.2017.03.205
- ISSN
- 0272-8842
1873-3956
- Abstract
- Single-component white-emitting sr(3)Y(PO4)(3):Dy3+ phosphors were synthesized by a high-energy deformation process. X-ray diffraction patterns showed the resulting crystallized phase to be of cubic structure, space group I-43d (no. 220). The broad-band excitation spectra between 250 and 500 nm were observed by monitoring the emission wavelength at 576 nm, which matches well with commercial near-UV or blue LED chips. Under a 352 nm excitation, the emission peaks were observed at 483 nm (blue), 576 nm (yellow), and 666 nm (red), corresponding to the F-4(9/2) -> H-6(15/2), F-4(9/2) -> H-6(13/2), and F-4(9/2) -> H-6(11/2) transitions of Dy3+ ions. The optimized doping concentration of Dy3+ ion was 8 mol%. By controlling the Dy3+ ion concentration, tunable colors from white to yellow were obtained in Sr3Y(PO4)(3):Dy3+ phosphors. These results reveal that studied materials may be a promising candidate for white LED applications.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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