YTaO_4:Gd,Eu体系光致发光中的能量传递

doi:10.3866/PKU.WHXB19990905

CORC > 北京大学 > 化学与分子工程学院

	YTaO_4:Gd,Eu体系光致发光中的能量传递; Energy transfer in the luminescence process of YTaO4 : Gd, Eu
	李博 ; 顾镇南 ; 林建华 ; 苏勉曾
刊名	物理化学学报
	1999
关键词	发光钽酸盐稀土 luminescence tantalate rare earth
DOI	10.3866/PKU.WHXB19990905
英文摘要	用高温固相反应法合成了钆、铕离子双掺杂的正钽酸盐化合物YTaO4 :Gd ,Eu ,研究了该体系在紫外光激发下的发光性能 .对该体系激发、发射及漫反射光谱的研究表明 ,Gd3+ 离子在发光过程中可以作为能量传递的中介 ,该体系在发光过程中存在钽酸根到Eu3+ 离子 ,或者钽酸根到Gd3+ 离子、再到Eu3+ 离子的能量传递; Yttrium orthotantalate co-doped by Eu3+ and Gd3+ has been synthesized by solid state method. The emission and excitation spectra of YTaO4: Gd, Eu are studied in detail. In the excitation spectra of Eu3+ D-5(0)-->F-7(2) transition emission in YTaO4: Gd, Eu, there appear excitations of Gd3+ and TaO43- group, which indicate energy transfer from Gd3+ and TaO43- group to Eu3+ in the process of luminescence. The excitation spectra of Gd3+ emission(lambda = 312. 5 nm) including strong excitation of charge transfer of TaO43- group show energy transfer from host lattice to Gd3+. So there are two ways of energy transfer in YTaO4: Gd, Eu system. The strong evidences from excitation spectra, emission spectra and diffusive reflection spectra of this system shaw that Gd3+ can play an intermediate role in the process of luminescence. There is energy transfer from TaO43- to Gd3+ and finally to Eu3+ via the charge transfer state and spectral overlap. The energy transfer from TaO43- to Gd3+ is a dominating process in this system.; SCI(E); 中文核心期刊要目总览(PKU); 中国科学引文数据库(CSCD); 8; 09; 794-798; 15
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/312809]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	李博,顾镇南,林建华,等. YTaO_4:Gd,Eu体系光致发光中的能量传递, Energy transfer in the luminescence process of YTaO4 : Gd, Eu[J]. 物理化学学报,1999.
APA	李博,顾镇南,林建华,&苏勉曾.(1999).YTaO_4:Gd,Eu体系光致发光中的能量传递.物理化学学报.
MLA	李博,et al."YTaO_4:Gd,Eu体系光致发光中的能量传递".物理化学学报 (1999).