Effect of Lu3+/Gd3+ Doping on Luminescence Properties of KBaYSi2O7:Eu2+ Blue Phosphor

被引：0

作者：

Chen L. ^{[1
,2
]}

Zhao W. ^{[1
]}

Liang Y. ^{[3
]}

Du F. ^{[3
]}

Ye X. ^{[3
]}

Lin J. ^{[1
]}

Jing G. ^{[2
]}

机构：

[1] Xuyu Optoelectronics(Shenzhen) Co., Ltd., Shenzhen

[2] Research Insititute of Tsinghua University in Shenzhen, Shenzhen

[3] Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou

来源：

Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2022年 / 40卷 / 05期

关键词：

Blue phosphor; Near ultraviolet excitation; Rare earths; White LED;

D O I：

10.11785/S1000-4343.20220502

中图分类号：

学科分类号：

摘要：

In the 21st century, white light LED as a green lighting source has been widely applied. The current mainstream way of realizing white light output by LEDs has a serious lack of emission spectra in the blue-green (cyan) 460~495 nm and deep red region 660~690 nm, and there is also a "rich blue" problem. Therefore, the development of near-ultraviolet (365 nm)excited blue, cyan, green, and red phosphors has important practical value for white light LED. In this work, KBaYSi2O7:Eu2+ blue phosphor (λem=450 nm)with excellent thermal stability and high luminous efficiency was systematically studied. As Gd3+ or Lu3+ partially replaced Y3+ with 15% and 20%, the luminescence intensity increased by 44.2% and 46.8%, respectively. This is mainly due to the fact that more Eu3+ enters the lattice and is reduced to Eu2+, which increases the concentration of the luminescence center Eu2+. In addition, the thermal stability of the samples was not changed after substitution. The blue phosphor developed in this study has a potential application in the current mainstream white LED lighting excited by near-ultraviolet chip. © 2022, Editorial Office of Journal of the Chinese Society of Rare Earths. All right reserved.

引用

页码：734 / 743

页数：9

共 36 条

[1] Cao L, Zheng Z S, Zhang H, Liang P, Zhu Q Q, Wang L., Phosphor-converted white light emitting diodes for plant lighting, Spectroscopy and Spectral Analysis, 41, 4, (2021)
[2] Ye X Y, Gao W G, Xia L B, Nie H P, Zhuang W D., A modified solution combustion method to superfine Gd2O3:Eu3+ phosphor: preparation, phase transformationn and optical properties, J. Rare Earths, 28, 3, (2010)
[3] Li K, Shang M M, Lian H Z, Lin J., Recent development in phosphors with different emitting colors via energy transfer, J. Mater. Chem. C, 24, 4, (2016)
[4] Zhou Q, Dolgov L, Srvastava A M, Zhou L, Wang Z L, Shi J X, Dramicanin M D, Brik M G, Wu M M., Mn2+ and Mn4+ red phosphors: synthesis, luminescence and applications in WLEDs, J. Mater. Chem. C, 11, 6, (2018)
[5] Liu L L, Zhang J F, Xu F F, Du F, Yang F L, Peng J Q, Ye X Y., Synthesis and photoluminescent properties of Sm3+-activated La3Si6N11 as an orange-red emitting phosphor, J. Rare Earths, 39, 1, (2021)
[6] Wang Z L, Liang H B, Gong M L, Su Q., Novel red phosphor of Bi3+, Sm3+ co-activated NaEu(MoO4)2, Opt. Mater, 29, 7, (2007)
[7] Liu Y H, Ma X L, Xue Y, Liu R H, Chen M Y, Chen G T, Yan C P, Zhang X, Zhou Y N, Gao W., White-light emitting single-phase phosphor La3Si6N11: Dy3+, Tb3+: color tunable emission, thermal stability and energytransfer process, J. Rare Earths, 37, 4, (2019)
[8] Xiao Y., Studies on Luminescence Properties of Ce3+, Tb3+ Activated High Efficiency Blue and Green Phosphors for White LED, (2019)
[9] Hisayoshi D, Takeshi I, Kiminori E, Yasutaka S, Yuzo M, Yu S, Shinobu A, Eiji N, Makoto S, Hiroshi S, Satoru M, Hideo H., A novel phosphor for glareless white light-emitting diodes, Nat. Commun, 3, 1, (2012)
[10] He S., Studies on cyan and near infrared phosphors for full-spectrum pc-LEDs, (2020)

← 1 2 3 4 →