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- Title
Preparation and luminescent properties of new YAG:Ce<sup>3+</sup> phosphor in glass (PIG) for white LED applications.
- Authors
Cui, Sanchuan; Chen, Guohua; Chen, Yong; Liu, Xiangyu
- Abstract
A yellow-emitting phosphor-in-glass (PIG) material was synthesized by dispersing commercial YAG:Ce3+ phosphor powder in homemade host glass prepared by melting-quenching method. The phase composition, microstructure and photoluminescence properties of PIG were investigated by means of XRD, SEM, fluorescence spectrophotometer and optoelectronic testing system. The results showed that the YAG:Ce3+ phosphor particles were uniformly distributed and well preserved in glass matrix without any decomposition reaction. The bulk PIG can be efficiently exited by 460 nm to emit a broad yellow emission peak (530 nm) attributed to 5d → 4f transition of Ce3+ ion. The optimal luminous property of PIG can be achieved when YAG:Ce3+ phosphor concentration, melting temperature and thickness are 8 wt%, 950 °C and 1.5 mm, respectively. Under driving current of 540 mA, the luminous efficiency of the white LED device packaged by the as-prepared PIG and blue LED chip is 98 lm/W, and its color coordinate, color temperature and color rendering index are (0.300, 0.339), 7125 K and 71, respectively. This finding shows potential applications in white LEDs for the as-prepared PIG material.
- Subjects
PHOSPHORS; LUMINESCENCE; LIGHT emitting diodes; CERAMICS; X-ray diffraction
- Publication
Journal of Materials Science: Materials in Electronics, 2018, Vol 29, Issue 15, p13019
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-018-9423-3