Strong up-conversion emissions in ZnO:Er3+, ZnO:Er3+-Yb3+ nanoparticles and their surface modified counterparts

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	Strong up-conversion emissions in ZnO:Er3+, ZnO:Er3+-Yb3+ nanoparticles and their surface modified counterparts
	Li JB
刊名	journal of colloid and interface science
	2011
卷号	358 期号:2 页码:334-337
关键词	Sol-gel ZnO:Er-Yb nanoparticles Up-conversion Core/shell Three-photon processes NANOCRYSTALLINE YTTRIA OPTICAL SPECTROSCOPY GLASSES LUMINESCENCE TEMPERATURE ER3+ YB3+ GREEN FILMS OXIDE
ISSN号	0021-9797
通讯作者	li, jb, zhejiang normal univ, res ctr light emitting diodes led, jinhua 321004, peoples r china. jbli@semi.ac.cn
学科主题	半导体物理
收录类别	SCI
资助信息	chinese academy of sciences ; national science fund for distinguished young scholar [60925016]; national high technology research and development program of china [2009aa034101]; postdoctoral foundation [09t1050000]
语种	英语
公开日期	2011-07-05 ; 2011-07-15
附注	zno:er3+ and zno:er3+-yb3+ nanoparticles (nps) are fabricated by a sol-gel method, afterwards parts of which are separated and surface modified in mo(no3)(3) solution. analyses on phase and structure based on x-ray diffraction (xrd) and high-resolution transmission electron microscopy (hrtem) techniques indicate that er3+ and yb3+ are incorporated into the zno lattice successfully and after mo treatment, a thin layer of moo3 forms on the nps surface, forming core/shell structures. raman scattering spectra reveal the existence of znmoo4 in the shell part. visible up-conversion (uc) is observed in all the samples, with mo treated and untreated zno:er3+ emitting dominant but relatively weak red light, corresponding to f-4(9/2)-i-4(15/2) transition of er3+. in yb3+-codoping systems, the integral uc intensity is enhanced obviously though red emission still dominates the uc spectra before surface modification. in the mo treated system, zno:er3+-yb3+/moo3, green emission is increased while the red is suppressed in comparison to zno:er3+-yb3+, with the intensity of green to red ratio (grr) changing from 0.25 to 8. a novel phenomenon is discovered that the green emissions in our samples involve three-photon processes. (c) 2011 elsevier inc. all rights reserved.
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/20857]
专题	半导体研究所_半导体超晶格国家重点实验室
推荐引用方式 GB/T 7714	Li JB. Strong up-conversion emissions in ZnO:Er3+, ZnO:Er3+-Yb3+ nanoparticles and their surface modified counterparts[J]. journal of colloid and interface science,2011,358(2):334-337.
APA	Li JB.(2011).Strong up-conversion emissions in ZnO:Er3+, ZnO:Er3+-Yb3+ nanoparticles and their surface modified counterparts.journal of colloid and interface science,358(2),334-337.
MLA	Li JB."Strong up-conversion emissions in ZnO:Er3+, ZnO:Er3+-Yb3+ nanoparticles and their surface modified counterparts".journal of colloid and interface science 358.2(2011):334-337.