Judd-Ofelt parameters determined experimentally for nanoparticles Gd2O3 : Eu3+

	Judd-Ofelt parameters determined experimentally for nanoparticles Gd2O3 : Eu3+
其他题名	论文其他题名
	Liu C. X.; Zhang J. H.; Lu S. Z.; Liu J. Y.
	2004
发表期刊	Acta Physica Sinica
ISSN	1000-3290
卷号	53 期号:11 页码:3945-3949
摘要	The spectral properties of nanoparticles Gd2O3:Eu3+ have been investigated by using Judd-Ofelt theory at 77K. Intensity parameters Omega(lambda) (lambda = 2, 4) were calculated using the experimental data of D-5(0)-->F-7(2) and D-5(0)-->F-7(4) transitions by taking the magnetic dipole transition D-5(0)-->F-7(1) as reference. The intensity of the transition is almost completely unaffected by the local environment. It is indicated that intensity parameter Omega(lambda) changes with the variation of diameter of narroparticles Gd2O3:Eu3+ (,) dramatically different from that of the bulk material. With decreasing diameter of the nanoparticles Gd2O3:Eu3+ from 135 to 15nm, the quantum efficiency of the emitting level D-5(0) reduces from 23.6% to 4.6 %. The smaller the diameter of nanoparticles Gd2O3:Eu3+, the bigger the ratio of surface to volume and the more the surface defect. It is the enhancing of the non-radiation channels that results in the decrease of the quantum efficiency. The other two non-radiation channels, charge (Eu3+-O2-) transfer state and multiphonon nonradiative re-excitaton, were also studied.
收录类别	SCI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/25783
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liu C. X.,Zhang J. H.,Lu S. Z.,et al. Judd-Ofelt parameters determined experimentally for nanoparticles Gd2O3 : Eu3+[J]. Acta Physica Sinica,2004,53(11):3945-3949.
APA	Liu C. X.,Zhang J. H.,Lu S. Z.,&Liu J. Y..(2004).Judd-Ofelt parameters determined experimentally for nanoparticles Gd2O3 : Eu3+.Acta Physica Sinica,53(11),3945-3949.
MLA	Liu C. X.,et al."Judd-Ofelt parameters determined experimentally for nanoparticles Gd2O3 : Eu3+".Acta Physica Sinica 53.11(2004):3945-3949.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
纳米Gd2O3_Eu3+中Judd-Of（202KB）			开放获取	--	浏览下载