Eu_3_或Tb_3_掺杂Y_2O_3纳米材料紫外激发光谱_图文

1、 112 发 光 学 报 第 29 卷 4 Bhargava R N , Gallagher D , Hong X, et a l . Op tical p roperties of manganese2doped nanocrystals of ZnS J . Phys . R ev . L ett . , 1994, 72 ( 3 : 416 2 419. 5 Bhargava R N. Doped nanocrystalline materials2Physics and app lications J . J. L um in. , 1996, 70 ( 1 2 6 : 85 2 94

2、. 6 Q i Yan, M eng J ianxin. Preparation and lum inescence of Eu 3+ 2doped LaPO4 nansparticles by gel2network p recip itation 3+ method J . Ch in. J. L um in. (发光学报 , 2006, 27 ( 3 : 397 2 401 ( in Chinese . 7 J ia M L , Zhang J H , Lu S Z, et a l . UV excitation p roperties of Eu J . Chem. Phys . L

3、ett . , 2004, 384 ( 1 2 3 : 193 2 196. 8 Yang L inmei, Song Hongwei . Synthesis and lum inescence p roperties of nanow ires and nanoslices of Gd2 O3 Yb J . Ch in. J. L um in. (发光学报 , 2006, 27 ( 6 : 987 2 990 ( in Chinese 1 9 Song H W , Chen B J, Peng H S, et a l . L ight2induced change of charge tra

4、nsfer band in nanocrystalline Y2 O3 Eu A ppl . Phys . L ett . , 2002, 81 ( 1 : 1776 2 1778. 3+ 3+ at the S6 site in bulk and nanocrystalline cubic Y2 O3 / Er 3+ J . 10 W ang J W , Song H W , Sun B J, et a l . L ight2induced lum inescent enhancement and structural change in cubic nanocrys2 talline Y2

5、 O3 Tb J . Chem. Phys . L ett . , 2003, 379 ( 5 2 6 : 507 2 511. 11 Fang Y, Xu W , Song R , et a l . Systematic synthesis and characterization of single2crystal lanthanide orthophosphate nanowires J . J. Am. Chem. S oc . , 2003, 125 ( 51 : 16025 2 16043. 12 Bai X, Song H W , Yu L X, et a l . Lum ine

6、scent p roperties of pure cubic phase Y2 O3 / Eu by a hydrothermal method J . J. Phys . Chem. B , 2005, 109 ( 32 : 15236 2 15242. 13 B redol M , Gutzov S, Justel Th. H ighly efficient energy transfer from Ge 2related defects to Tb glasses J . J. N on 2 C ryst . S olids, 2003, 321 ( 3 : 225 2 230. 14

7、 J ia W Y, W ang Y Y, Felix Fernandez, et a l . Photolum inescence of Ce 3+ 3+ 3+ nanotubes/ nanowires p repared ions in sol2gel2derived , Tb 3+ Y2 O3 nanoclusters embedded in SiO2 sol2 gel glasses J . M a teria ls S cience and Eng ineering C , 2001, 16 ( 1 2 2 : 55 2 58. 15 L i X, L iu H, W ang J Y

8、, Cui H M , et a l . Solvothermal synthesis and lum inescent p ropertiesof YAG Tb nano 2sized phos2 phors J . J. Phys . Chem. S olids, 2005, 66 ( 1 : 201 2 205. 16 Chatterjee S, V irendra Shanker, Harish Chander . Ther molum inescence of Tb doped Gd2 O2 S phosphor J . M a ter . Chem. Phys . , 2003,

9、80 ( 3 : 719 2 724. 17 Pieterson L van, Reid M F, Burdick G W , et a l . 4f 2 4f 5d transitions of the heavy lanthanides: Experim ent and theory n n2 1 J . Phys . R ev . B , 2002, 65 ( 4 : 045114 2 12 13. 18 You F T, Huang S H. 4f n- 1 5d configuration of rare earth Ions in solids J . J. Ch in. R a

10、re Ea rth S ociety (中国稀土学 报 , 2002, 20 ( 6 : 515 2 520 ( in Chinese . 19 L Van Pieterson, Reid M F, M eijerink A. Reappearance of fine structure as a p robe of lifetim e broadening mechanism s in the 4f 4f 5d excitation spectra of Tb 067405 2 12 41 n n2 1 3+ , Er , and Tm 3+ 3+ in CaF2 and L iYF4 J

11、. Phys . R ev . L ett . , 2002, 88 ( 6 : Study on UV Exc ita tion Spectra of Eu M ENG Q ing2yu 1, 2 3+ or Tb 1, 2 3+ doped Y 2 O 3 Nanoma ter ia ls 1 1, 4 , CHEN B ao 2jiu 1, 3 , ZHAO Xiao 2xia , WANG Xiao 2jun , XU W u ( 1. Key L aboratory of Excited S ta te P rocesses, Changchun Institu te of O pt

12、ics, F ine M echan ics and Physics, Chinese A cadem y of S ciences, Changchun 130033, Ch ina; 2. Gradua te School of the Ch inese A cadem y of S ciences, B eijing 100049, Ch ina; 3. D epartm ent of Physics, D a lian M a ritim e U n iversity, D a lian 116026, Ch ina; 4. U niversity of S cience and Te

13、chnology of China, Hefei 230026, Ch ina 3+ Abstract: Y2 O3 L n nanocrystals w ith different L n ( L n = Eu or Tb dop ing concentrations and average sizes were p repared by chem ical self2combustion. And the bulk materials of corresponding dop ing concentrations were obtained by annealing at high tem

14、perature. The em ission spectra, excitation spectra and X 2ray diffraction © 1994-2009 China Academic Journal Electronic Publishing House. All rights reserved. 第 1期 孟庆裕 , 等 : Eu3 + 或 Tb3 + 掺杂 Y2 O3 纳米材料紫外激发光谱 113 spectra of Y2 O3 L n nanocrystals and bulk materials were measured. The research i

15、ndicated that under the effect of quantum confinem ent effect and surface effect, the Y2 O3 Eu charge transfer band red 2shifted clearly while the particle size decreased. Furthermore, the charge transfer band of the s mall size particles ( 8 nm clearly broadened towards the long wavelength, this wa

16、s attributed to the increase of the amount of Eu 3+ ions existing in low crystallization degree environm ent close to the surface. The study also indicated that the shape 3+ of excitation peaks ( bands corresponding to the 4f5d transition absorp tion of Tb in the excitation spectra of Y2 O3 Tb nanoc

17、rystals changed a lot w ith the variety of the particle size. This is because that the Tb 3+ ions ex2 ist in two very different local environm ents: the low crystallization degree environm ent close to the surface and the high crystallization degree environment inner the particles . The absorp tion

18、peaks of 4f5d transition were diffe 2rent in the t wo environments . The Tb 3+ ions ratio in the t wo environments changs w ith the variety of the particle size. So the intensity of corresponding excitation peaks ( bands changed and the shapes of the excita2 tion spectra changed. By comparing the ex

19、citation spectra of different dop ing concentrations, it can be found that w ith the increase of Tb 3+ ( or Eu3 + concentrations, the relative strength of the Y2 O3 exciton transition ab2 sorp tion excitation peak to the 4f5d transition ( or charge transfer band excitation peak decreased. The excita

20、2 tion efficiency of Y2 O3 exciton absorp tion band is very low when the dop ing concentrations of the lum inescent centers were higher . B ut the excitation efficiency of Y2 O3 exciton absorp tion band increased when the dop ing concentrations were quite low. Key words: Y2 O3 L n ( L n = Eu or Tb n

21、anomaterials; UV excitation; surface; exciton absorp tion. Received date: 2007 2 08 2 25 中国光学与应用光学 征订启示 中国光学与应用光学 原名 中国光学与应用光学文摘 , 是由中国科学院主管 , 中国科学院长春 光学精密机械与物理研究所主办的学术技术类期刊 ,双月刊 , A4 开本 ,国内外公开发行 。 中国光学与应用光学 以反映国内外光学与应用光学领域的最新动态 、 高新成果和前沿技术 , 提 供主流技术研究 、 战略策划 、 综合评述 ,跟踪光学领域的最新科技水平和发展动向 ,为国内外相关学科领 域的科研人员提供学术交流和学术积累的平台 ,促进光学和应用光学学科