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The surface passivation on the optical and surface properties of InP 会议论文
12th China International Nanoscience and Technology Symposium, and the Nano-Products Exposition, CINSTS 2013, October 27, 2013 - October 31, 2013, Chengdu, China
Gao X.; Wei Z. P.; Fang D.; Zhao H. F.; Fang X.; Tian S. S.; Tang J. L.; Du P.; Chu X. Y.; Li J. H.; Fang F.; Wang X. H.
收藏  |  浏览/下载：19/0  |  提交时间：2015/04/27
Luminescence and energy transfer in Ca3Sc2Si 3O12:Ce3+,Mn2+ white LED phosphors 会议论文
P.O. Box 211, Amsterdam, 1000 AE, Netherlands
作者:  Zhang X.
收藏  |  浏览/下载：36/0  |  提交时间：2014/05/15
Luminescence and energy transfer in Ca3Sc2Si 3O12:Ce3+,Mn2+ white LED phosphors (EI CONFERENCE) 会议论文
Liu Y.; Zhang X.; Hao Z.; Luo Y.; Wang X.; Ma L.; Zhang J.
收藏  |  浏览/下载：31/0  |  提交时间：2013/03/25
Energy transfer from CdSe quantum dots to porphyrin via two-photon excitation 会议论文
25650 North Lewis Way, Stevenson Ranch, California, 91381-1439, United States
An L.; Chao K.; Zeng Q.; Han X.; Yuan Z.; Xie F.; Fu X.; An W.
收藏  |  浏览/下载：10/0  |  提交时间：2014/05/15
Influence of high temperature annealing in nitrogen on upconversion luminescence of -NaYF4: Yb3+, Er3+ hexagonal sub-microplates (EI CONFERENCE) 会议论文
2012 International conference on Function Materials and Nanotechnology, FMN 2012, May 19, 2012 - May 20, 2012, Zhengzhou, China
Zhao J.; Jia T.; Kong X.
收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25
The pure -NaYF4: Yb3+  Er3+ hexagonal sub-microplates were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. The size of them is about 600 nm 400 nm (side length thickness). The obtained sample was divided into two parts and one of them was annealed in nitrogen at 300 C for 2 hours. The crystal structure of the -NaYF4: Yb3+  Er3+ hexagonal sub-microplates before and after annealing treatment is hexagonal phase. Under the excitation of 980 nm diode laser  the upconversion luminescence intensity the sample after annealing is much stronger than that of the sample without annealing treatment. High temperature annealing process improved the crystallization of the sample  resulting in the decrease of the nonradiative relaxation and the enhancement of the upconversion luminescence. (2012) Trans Tech Publications  Switzerland.  
Influence of Sensitizer Concentration on the Upconversion Luminescence of NaYF4: Yb3+, Er3+ Nanoparticles 会议论文
2012
Zhao J. W.; Shi D. M.; Zhao Y. G.; Kong X. G.
收藏  |  浏览/下载：9/0  |  提交时间：2013/03/28
Influence of sensitizer concentration on the upconversion luminescence of NaYF4: Yb3+, Er3+ nanoparticles (EI CONFERENCE) 会议论文
2012 2nd International Conference on Machinery, Materials Science and Engineering Applications, MMSE 2012, June 16, 2012 - June 17, 2012, Wuhan, China
Zhao J.; Shi D.; Zhao Y.; Kong X.
收藏  |  浏览/下载：14/0  |  提交时间：2013/03/25
A series of NaYF4: Yb3+  Er3+ nanoparticles with different doping concentration were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. Upconversion luminescence can be observed in all of the samples at room temperature. Fixed the Er3+ concentration with 1 mol% unchanged  the effect of the Yb3+ concentration on the upconversion luminescence of NaYF4: Yb3+  Er3+ samples were studied when the doped Yb3+ concentrations were 0 mol%  1 mol%  2 mol%  5 mol%  10 mol% and 20 mol%  respectively. As increasing the Yb 3+ concentration  the total intensity of the upconversion luminescence of the samples is increasing while the ratio of red to green emission increases firstly and then decreases. The maximum ratio value is 22.1 when the Yb3+ concentration is 10 mol%. It is found that the cross relaxation and cooperative sensitization effect are the reasons for the phenomenon above. (2012) Trans Tech Publications.  
Synthesis and luminescence properties of Eu3+-doped silicate nanomaterial (EI CONFERENCE) 会议论文
17th International Conference on Dynamical Processes in Excited States of Solids, DPC'10, June 20, 2010 - June 25, 2010, Argonne, IL, United states
Lu S.; Zhang J.; Zhang J.
收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25
In this paper  we introduce a sol-gel process for preparing Y 2Si2O7: Eu3+ nanocrystals. The rare earth compounds were dispersed in the SiO2 colloids and the monodisperse nano-scale composite materials were prepared. The reactant mass fraction and heat treatment temperatures could affect the structures and emission spectrum properties of as-synthesized samples. The samples emit the strong red light upon excitation under the ultraviolet. The main peaks originate from 5D0-7F2 electric dipole transition of Eu3+. With regard to the samples treated at different temperatures  the emission spectra obtained under 266 nm excitation show different shapes of spectra lines and relative intensities  indicating that the Eu3+ ions have been located in different local environments. 2011 Published by Elsevier B.V.  
Synthesis and Luminescence Properties of Eu(3+)-doped Silicate Nanomaterial 会议论文
2011
Lu S. Z.; Zhang J. H.; Zhang J. S.
收藏  |  浏览/下载：5/0  |  提交时间：2013/03/28
Design of visible, infrared dual-channel optical system for space target detection (EI CONFERENCE) 会议论文
2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China
Zhang X. Y.
收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25

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