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Dy 3+ /Ce 3+ Codoped YAG Transparent Ceramics for Single‐Composition Tunable White‐Light Phosphor
Author(s) -
Zheng Ruilin,
Luo Dewei,
Yuan Ye,
Wang Zhongyue,
Zhang Ying,
Wei Wei,
Kong Ling Bing,
Tang Dingyuan
Publication year - 2015
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13750
Subject(s) - chromaticity , phosphor , yttrium , transparent ceramics , materials science , ceramic , luminescence , analytical chemistry (journal) , color temperature , optoelectronics , optics , chemistry , metallurgy , oxide , chromatography , physics
Superior optical, thermal, and mechanical properties of transparent ceramics are very important in the applications of solid lasers, solid‐state lighting, and transparent armors. Herein, a series of (Dy 0.03 Ce x Y 0.97− x ) 3 Al 5 O 12 transparent ceramics were fabricated using vacuum reactive sintering method. Importantly, these Dy 3+ /Ce 3+ codoped yttrium aluminum garnet ( YAG ) transparent ceramics served as single‐composition tunable white‐light phosphors for UV ‐ LED s is developed for the first time. By combining with commercially available UV ‐ LED s directly, the optimal chromaticity coordinates and correlated color temperature ( CCT ) are ( x = 0.33, y = 0.35) and 5609 K, respectively. Notably, the codoping of Ce 3+ enhances the luminescent intensity of Dy 3+ ions while excited at 327 nm. The emission color of YAG transparent ceramics can be tuned from white to yellow through energy transfer between Dy 3+ and Ce 3+ . These new phosphors, possessing of pure CIE chromaticity and environmentally friendly nature, are promising for applications in white UV ‐ LED s.