Sol-gel fabrication and photoluminescence properties of SiO2@Gd2O3 : Eu3+ core-shell particles

	Sol-gel fabrication and photoluminescence properties of SiO2@Gd2O3 : Eu3+ core-shell particles
	Li GZ ; Yu M ; Wang ZL ; Lin J ; Wang RS ; Fang J
刊名	journal of nanoscience and nanotechnology
	2006
卷号	6 期号:5 页码:1416-1422
关键词	ER3+ PHOSPHOR FILMS COMBINATORIAL CHEMISTRY COLLOIDAL PARTICLES CHEMICAL-REACTIONS PHOTONIC CRYSTALS SOFT LITHOGRAPHY SPRAY-PYROLYSIS THIN-FILMS SILICA NANOPARTICLES
ISSN号	1533-4880
通讯作者	lin j
中文摘要	a uniform nanolayer of europium-doped gd2o3 was coated on the surface of preformed submicron silica spheres by a pechini sol-gel process. the resulted sio2@gd2o3:eu3+ core-shell structured phosphors were characterized by x-ray diffraction (xrd), fourier transform infrared spectroscopy (ft-ir), field emission scanning electron microscopy (fesem), transmission electron microscopy (tem), photoluminescence (pl) spectra as well as kinetic decays. the xrd results show that the gd2o3:eu3+ layers start to crystallize on the sio2 spheres after annealing at 400 degrees c and the crystallinity increases with raising the annealing temperature. the core-shell phosphors possess perfect spherical shape with narrow size distribution (average size: 640 nm) and non-agglomeration. the thickness of the gd2o3:eu3+ shells on the sio2 cores can be adjusted by changing the deposition cycles (70 nm for three deposition cycles). under short uv excitation, the obtained sio2@gd2o3:eu3+ particles show a strong red emission with d-5(0)-f-7(2) (610 nm) of eu3+ as the most prominent group.the pl intensity of eu3+ increases with increasing the annealing temperature and the number of coating cycles.
收录类别	SCI
语种	英语
WOS记录号	WOS:000238030200031
公开日期	2010-08-17
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/16413]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Li GZ,Yu M,Wang ZL,et al. Sol-gel fabrication and photoluminescence properties of SiO2@Gd2O3 : Eu3+ core-shell particles[J]. journal of nanoscience and nanotechnology,2006,6(5):1416-1422.
APA	Li GZ,Yu M,Wang ZL,Lin J,Wang RS,&Fang J.(2006).Sol-gel fabrication and photoluminescence properties of SiO2@Gd2O3 : Eu3+ core-shell particles.journal of nanoscience and nanotechnology,6(5),1416-1422.
MLA	Li GZ,et al."Sol-gel fabrication and photoluminescence properties of SiO2@Gd2O3 : Eu3+ core-shell particles".journal of nanoscience and nanotechnology 6.5(2006):1416-1422.