Improving Quantum Efficiency and Thermal Stability in Blue-Emitting Ba2-xSrxSiO4:Ce3+ Phosphor via Solid Solution

被引：223

作者：

Ji, Xiaoyu ^{[1
,2
]}

Zhang, Jilin ^{[1
,2
]}

Li, Ying ^{[1
,2
]}

Liao, Shuzhen ^{[3
]}

Zhang, Xinguo ^{[4
]}

Yang, Zhiyu ^{[5
]}

Wang, Zhengliang ^{[5
]}

Qiu, Zhongxian ^{[1
,2
]}

Zhou, Wenli ^{[1
,2
]}

Yu, Liping ^{[1
,2
]}

Lian, Shixun ^{[1
,2
]}

机构：

[1] Hunan Normal Univ, Hunan Prov Coll, Minist Educ China, Key Lab Chem Biol & Tradit Chinese Med Res, Changsha 410081, Hunan, Peoples R China

[2] Hunan Normal Univ, Hunan Prov Coll, Key Lab Sustainable Resources Proc & Adv Mat, Changsha 410081, Hunan, Peoples R China

[3] Hunan Inst Engn, Sch Chem & Chem Engn, Xiangtan 411104, Peoples R China

[4] Southern Med Univ, Sch Pharmaceut Sci, Guangdong Prov Key Lab New Drug Screening, Guangzhou 510515, Guangdong, Peoples R China

[5] Yunnan Minzu Univ, Sch Chem & Environm, Key Lab Comprehens Utilizat Mineral Resource Ethn, Kunming 650500, Yunnan, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2018年 / 30卷 / 15期

基金：

中国国家自然科学基金;

关键词：

WHITE-LIGHT; LUMINESCENCE PROPERTIES; ENERGY-TRANSFER; PHOTOLUMINESCENCE PROPERTIES; NEAR-UV; GAMMA-CA2SIO4CE3+ PHOSPHORS; ORTHOSILICATE PHOSPHORS; PHASE-TRANSFORMATION; CRYSTAL-STRUCTURE; GARNET PHOSPHORS;

D O I：

10.1021/acs.chemmater.8b01652

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ba1.8-xSrxSiO4:0.1Ce(3+),0.1Na(+) (x = 0-1.8) phosphors were prepared by a high-temperature solid-state reaction. The emission peaks of Ba1.8-xSrxSiO4:0.1Ce(3+),0.1Na(+) shift from 391 to 411 nm with increasing Sr2+ content under excitation by a UV light at around 360 nm. Ba0.4Sr1.4SiO4:0.1Ce(3+),0.1Na(+) phosphor exhibits the best performance of luminescence, whose absolute quantum efficiency is 97.2%, and the emission intensity at 150 degrees C remains 90% of that at room temperature. The effect of replacing Ba2+ by Sr2+ on the red shift of the emission band and the increase of quantum efficiency (QE) and thermal stability (TS) was investigated in detail based on the Rietveld refinements, Raman spectra, thermoluminescence, and decay curves, etc. The performance of UV chip-based pc-LEDs indicates that Ba0.4Sr1.4SiO4:0.1Ce(3+),0.1Na(+) can be a promising blue phosphor for white-emitting pc-LEDs.

引用

页码：5137 / 5147

页数：11

共 64 条

[21] White-light generation in Sr2SiO4:Eu2+, Ce3+ under near-UV excitation -: A novel phosphor for solid-state lighting [J].