View in EDS

A chromaticity-tunable garnet-based phosphor-in-glass color converter applicable in w-LED.

Saved in:
Bibliographic Details
Title: A chromaticity-tunable garnet-based phosphor-in-glass color converter applicable in w-LED.
Authors: Lin, Zebin1, Lin, Hang1,2 lingh@fjirsm.ac.cn, Xu, Ju1,2, Huang, Feng1,2, Chen, Hui1, Wang, Bo1, Wang, Yuansheng1,2 yswang@fjirsm.ac.cn
Source: Journal of the European Ceramic Society. Jun2016, Vol. 36 Issue 7, p1723-1729. 7p.
Subjects: Chromaticity, Light emitting diodes, Garnet, Ceramics design, Optical properties
Abstract: Phosphor-in-glass (PiG) color converter, being regarded as a good encapsulant material for long-lifetime high-powered white light-emitting-diode (LED), has developed rapidly in the recent years. However, it still remains a challenge to achieve fine chromaticity tuning of PiG for high-quality indoor lighting. Herein, a transparent garnet-based PiG was successfully prepared by introducing the Y 3 Mg 2 AlSi 2 O 12 :Ce 3+ orange phosphor and the Y 3 Al 4.6 Ga 0.4 O 12 :Ce 3+ green phosphor into TeO 2 -based glass matrix. The microstructure and luminescent properties of the PiG were investigated in detail. After optimizing the weight ratio of green phosphor to orange phosphor as well as the PiG thickness, facile chromaticity tuning to follow along Planckian locus in the thus-fabricated LED is achieved; correspondingly the correlated color temperature is adjusted from cool white to warm white. Hopefully, the developed garnet-based PiG is applicable in the long-lifetime color-tunable w-LEDs. [ABSTRACT FROM AUTHOR]
Copyright of Journal of the European Ceramic Society is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Phosphor-in-glass (PiG) color converter, being regarded as a good encapsulant material for long-lifetime high-powered white light-emitting-diode (LED), has developed rapidly in the recent years. However, it still remains a challenge to achieve fine chromaticity tuning of PiG for high-quality indoor lighting. Herein, a transparent garnet-based PiG was successfully prepared by introducing the Y 3 Mg 2 AlSi 2 O 12 :Ce 3+ orange phosphor and the Y 3 Al 4.6 Ga 0.4 O 12 :Ce 3+ green phosphor into TeO 2 -based glass matrix. The microstructure and luminescent properties of the PiG were investigated in detail. After optimizing the weight ratio of green phosphor to orange phosphor as well as the PiG thickness, facile chromaticity tuning to follow along Planckian locus in the thus-fabricated LED is achieved; correspondingly the correlated color temperature is adjusted from cool white to warm white. Hopefully, the developed garnet-based PiG is applicable in the long-lifetime color-tunable w-LEDs. [ABSTRACT FROM AUTHOR]
ISSN:09552219
DOI:10.1016/j.jeurceramsoc.2016.01.024