In:
Journal of the American Ceramic Society, Wiley, Vol. 100, No. 11 ( 2017-11), p. 5186-5192
Kurzfassung:
A low sintering temperature glass based on the SiO 2 –P 2 O 5 –ZnO–B 2 O 3 –R 2 O (R=K and Na) system was studied as a matrix for embedding phosphors to fabricate color tunable white LEDs. The proposed system, which uses no heavy‐metal elements and can be sintered at 500°C, incorporates thermally weak commercial phosphors such as CaAlSiN 3 :Eu 2+ to produce phosphor‐in‐glasses (PiGs). Changing the mixing ratio of glass to phosphors affected the photo‐luminescence spectra and color coordinates of the PiGs when mounted on a blue LED. The color rendering index (CRI) and color correlated temperature (CCT) of the LED s were also varied with the mixing ratio, providing color tunable white LED s. A high CRI , up to 93, as well as highly improved thermal stability were obtained, along with a low sintering temperature compared to other glass systems, suggesting the practical feasibility of the proposed system.
Materialart:
Online-Ressource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2017.100.issue-11
Sprache:
Englisch
Verlag:
Wiley
Publikationsdatum:
2017
ZDB Id:
2008170-4
ZDB Id:
219232-9
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