Synthesis and luminescent properties of a white light phosphor KBa2Nb5O15:Na+, Dy3+ for light-emitting-devices

被引：22

作者：

Ding, Xin ^{[1
]}

Zhu, Ge ^{[1
]}

Shi, Yurong ^{[1
]}

Wang, Yuhua ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Phys Sci & Technol, Dept Mat Sci, Lanzhou 730000, Gansu, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 09期

基金：

美国国家科学基金会;

关键词：

Optical materials; Luminescence; Optical properties; ENERGY-TRANSFER; LEDS; PHOTOLUMINESCENCE; DIODES;

D O I：

10.1016/j.materresbull.2013.05.080

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The white light emission phosphor KBa2Nb5O15:Dy3+ was synthesized by solid-state method. X-ray diffraction (XRD) study reveals that all the Dy3+ doped phosphors are single phase. Strong excitation peaks of KBa2Nb5O15:Dy3+ were found around 380-400 nm, matched well with the NUV LED chip. Under 388 nm excitation, the phosphor exhibited intense white emission by combining the two emission peaks at 477 nm and 572 nm, attributed to the characteristic F-4(9/2)-H-6(15/2) and F-4(9/2)-H-6(13/2) transition of Dy3+. The optimum doping concentration of Dy3+ is found to be 3%, whose Commission International de l'Eclairage (CIE) chromaticity coordinates and correlated color temperature are (0.395, 0.422) and 3925 K, respectively. The results indicate that the KBa2Nb5O15:Dy3+ phosphor could be considered as a potential candidate for white-LEDs. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：3648 / 3650

页数：3

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