White LED featuring remote phosphor with poly(vinylidene fluoride-co-hexafluoropropylene)

被引：5
|
作者：
Huang, Kuan-Chieh [1 ]
Lu, Wen-Jie [1 ]
Liao, Kuan-Yung [1 ]
Tsai, Tai-Cheng [1 ]
Lai, Teng-Hsien [1 ]
Sheu, Gwo-Jiun [1 ]
Li, Yun-Li [1 ]
机构：
[1] Genesis Photon Inc, R&D Ctr, Tainan 74144, Taiwan
来源：
MATERIALS LETTERS | 2014年 / 122卷
关键词：
Composite materials; Polymers; Poly(vinylidene fluoride-co-hexafluoropropylene; Remote phosphor; White light-emitting diode; LIGHT; LAYER;
D O I：
10.1016/j.matlet.2014.02.061
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A flexible remote phosphor (RP) sheet based on thermally stable polymer, poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP), is prepared for a warm white light-emitting diode (WLED) by adopting a simple route. The highly thermal stability of the PVDF-HFP is confirmed by means of thermogravimetric analysis. The luminous efficacy (65.7 +/- 2.9 lm/W) and the chromaticity coordinates (0.4578, 0.4107) of the WLED applying PVDF-HFP-based RP sheet remain steady under continuity of current injection of 350 mA for a long-term duration of 1000 h. A better uniformity in correlated color temperature (CCT) of such WLED is obtained, with reference to the CCT uniformity of a WLED made of sapphire-based RP. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：265 / 268
页数：4
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