Controlled synthesis and photoluminescence properties of Bi2SiO5:Eu3+ core-shell nanospheres with an intense 5D0 → 7F4 transition

被引：12

作者：

Chen Dongxun ^{[1
]}

Miao, Shihai ^{[1
]}

Liang, Yanjie ^{[1
,2
]}

Wang, Weili ^{[1
]}

Yan, Shao ^{[1
]}

Bi, Jianqiang ^{[1
]}

Sun, Kangning ^{[1
]}

机构：

[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China

[2] Shandong Univ, Adv Med Res Inst, Jinan 250012, Peoples R China

来源：

OPTICAL MATERIALS EXPRESS | 2021年 / 11卷 / 02期

基金：

中国国家自然科学基金;

关键词：

WHITE-LIGHT; LUMINESCENCE PROPERTIES; OPTICAL THERMOMETRY; FACILE SYNTHESIS; ENERGY-TRANSFER; RED PHOSPHORS; NANOPARTICLES; EU3+; PROGRESS; FIELD;

D O I：

10.1364/OME.414564

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Core-shell Bi2SiO5 nanosystem with uniform morphology and narrow size distribution has been successfully synthesized via a facile template-assisted route. With the introduction of Eu3+, detailed studies are performed to evaluate its promise as Eu3+-based phosphor host. The yielded Bi/SiO5:Eu3+ nanospheres are proven to be pure tetragonal phase via X-ray diffraction and Rietveld refinement. Moreover, the phosphor particles consist of monodisperse spheres with an average diameter of approximately 285 nm by high-resolution electron microscopy. When excited by near-ultraviolet (NUV) light, the abnormally high-intensity emission at 703 nm arising from the D-5(0) -> F-7(4) transition of Eu3+ is observed. The temperature-dependent photoluminescence spectra show that the optimized BbSiO(5):20%Eu3+ have satisfactory thermal stability with 63.7% of emission intensity at 423 K relative to 303 K. The deep-red light-emitting diode (LED) device fabricated by coating NUV chip with the Bi2SiO5:20%Eu3+ phosphors is demonstrated. The newly-developed Bi2SiO5:Eu(3+ )nanophosphors display commendable photoluminescence properties, demonstrating their promise as deep-red phosphor candidates for use in phosphor-converted LEDs. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：355 / 370

页数：16

共 68 条

[1] Enhancement of charge separation in ferroelectric heterogeneous photocatalyst Bi4(SiO4)3/Bi2SiO5 nanostructures [J].