Sr2Y8(SiO4)(6)O-2:Bi3+/Eu3+: a single-component white-emitting phosphor via energy transfer for UV w-LEDs

	Sr2Y8(SiO4)(6)O-2:Bi3+/Eu3+: a single-component white-emitting phosphor via energy transfer for UV w-LEDs
	Li,Kai; Fan,Jian; Shang,Mengmeng; Lian,Hongzhou; Lin,Jun
刊名	journal of materials chemistry c
	2015
卷号	3 期号:38 页码:9989-9998
关键词	SOL-GEL PROCESS VACUUM-ULTRAVIOLET EXCITATION ENHANCED RED EMISSION LUMINESCENCE PROPERTIES TUNABLE LUMINESCENCE PHOTOLUMINESCENT PROPERTIES SILICATE GLASS TB3+ PHOSPHOR LIGHT LEDS NEAR-UV
通讯作者	lin,j
英文摘要	a series of bi3+,eu3+-doped sr2y8(sio4)(6)o-2 (syso) phosphors were synthesized by the pechini-type sol-gel route. xrd patterns, rietveld refinement, ft-ir spectra, photoluminescence spectra (pl), fluorescence decay time, and quantum yields (qys) were utilized to characterize the as-prepared samples. intense blue-green emission due to the p-3(1) -> s-1(0) transition of bi3+ ions is produced under uv excitation in bi3+ singly doped syso samples. spectral analysis illustrates that two kinds of bi3+ ions are generated by occupying the two kinds of sites (4f and 6h) available for y in syso, denoted as bi3+(1) and bi3+(2), corresponding to the two main emission bands at around 413 and 493 nm, respectively. a wide spectral overlap between bi3+ emission and eu3+ excitation spectra results in the energy transfer from bi3+ to eu3+. this has been demonstrated via the excitation spectra monitored at bi3+ and eu3+ emission bands, and the pl emission spectra and decay time of bi3+ in syso:bi3+,eu3+ phosphors. the energy transfer mechanism is determined to be dipole-quadrupole interaction. the critical distance of energy transfer from bi3+ to eu3+ ions is calculated to be 12.78 angstrom based on the concentration quenching method, which is in good agreement with that of the spectral overlap route (10.03-13.37 angstrom). moreover, the qys, cie chromaticity and thermal quenching properties have also been investigated. white emission color can be realized with the cie coordinates (0.325, 0.311) and qy 52% for syso:0.08bi(3+),0.48eu(3+). the above results suggest that syso:bi3+,eu3+ can be a potential single-component white-emitting phosphor for uv w-leds.
收录类别	SCI
语种	英语
WOS记录号	WOS:000361835600028
公开日期	2016-05-31
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/65110]
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,Kai,Fan,Jian,Shang,Mengmeng,et al. Sr2Y8(SiO4)(6)O-2:Bi3+/Eu3+: a single-component white-emitting phosphor via energy transfer for UV w-LEDs[J]. journal of materials chemistry c,2015,3(38):9989-9998.
APA	Li,Kai,Fan,Jian,Shang,Mengmeng,Lian,Hongzhou,&Lin,Jun.(2015).Sr2Y8(SiO4)(6)O-2:Bi3+/Eu3+: a single-component white-emitting phosphor via energy transfer for UV w-LEDs.journal of materials chemistry c,3(38),9989-9998.
MLA	Li,Kai,et al."Sr2Y8(SiO4)(6)O-2:Bi3+/Eu3+: a single-component white-emitting phosphor via energy transfer for UV w-LEDs".journal of materials chemistry c 3.38(2015):9989-9998.