使用氧化钆、氧化铕和偏钒酸铵为原料,以DTAB为表面活性剂,在不同的反应溶液pH值条件下,采用水热合成法得到了从微米尺度到纳米尺度的一系列钒酸钆荧光粉.通过X射线衍射(XRD),场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)和荧光光谱(PL)等测试手段对不同形貌的样品的物相及微观形貌和发光性能进行表征.结果表明,在强酸环境下,晶体颗粒较大,为微米级,随着pH值的提升,晶体颗粒尺寸变小,进入纳米级,在pH为7,10时,分别得到50nm以下的纳米晶片,且分散性良好.另外pH =7时观察到更为微小的小晶粒团,相比之下碱性环境下纳米晶片的结晶度较高.发光性能测试表明,样品发光性能随晶粒尺寸和结晶度变化显著.纳米尺度结晶良好的产品发光性能优异.
参考文献
| [1] | Zheng, YH;You, HP;Jia, G;Liu, K;Song, YH;Yang, M;Zhang, HJ .Facile Hydrothermal Synthesis and Luminescent Properties of Large-Scale GdVO4:Eu3+ Nanowires[J].Crystal growth & design,2009(12):5101-5107. |
| [2] | Bing Yan;Jian-Feng Gu .Hydrothermal synthesis and luminescent properties of GdVO_4 : Eu~(3+) nanophosphors[J].Journal of Experimental Nanoscience,2009(4):301-311. |
| [3] | Zhang L;Chen D R;Jiao X L .Monoclinic structured BiVO4 nanosheets:hydrothermal preparation,formation mechanism,and coloristic and photocatalytic properties[J].Journal of Physical Chemistry B,2006,110(06):2668. |
| [4] | Mahapatra S;Ramanan A .Hydrothermal synthesis and structural study of lanthanide orthovanadates,LnVO4 (Ln =Sm,Gd,Dy and Ho)[J].Journal of Alloys and Compounds,2005,395(1-2):149. |
| [5] | Gu M;Liu Q;Mao SP;Mao D;Chang CK .Preparation and photoluminescence of single-crystalline GdVO4 : EU3+ nanorods by hydrothermal conversion of Gd(OH)(3) nanorods[J].Crystal growth & design,2008(4):1422-1425. |
| [6] | 刘荣辉,黄小卫,何华强,庄卫东,胡运生,刘元红.稀土发光材料技术和市场现状及展望[J].中国稀土学报,2012(03):265-272. |
| [7] | Pires A M;Davolos M R;Stucchi E B .Eu3+ as a spectroscopic probe in phosphors based on spherical fine particle gadolinium compounds[J].International Journal of Inorganic Materials,2001,3:785. |
| [8] | Liu B;Shi C S;Zhang Q L;Chen Y H .Temperature dependence of GdVO4:Eu3+ luminescence[J].Journal of Alloys and Compounds,2002,333(1-2):215. |
| [9] | Mahalley BN.;Gupta PK.;Pode RB. .Synthesis of GdVO4 : Bi,Eu red phosphor by combustion process[J].Physica Status Solidi, A. Applied Research,2000(1):293-302. |
| [10] | Yi S S;Bae J S;Shim K S;Moon B K Seo H J Jeong J H Kim J H .Photoluminescence behaviors of Eudoped GdVO4 thin film phosphors grown by pulsed laser ablation[J].Journal of Alloys and Compounds,2006,408-412:890. |
| [11] | Liu GX;Hong GY;Wang JX;Dong XT .Deposition of GdVO4 : Eu3+ nanoparticles on silica nanospheres by a simple sol-gel method[J].Nanotechnology,2006(13):3134-3138. |
| [12] | Mahalley BN.;Pode RB.;Alexander G.;Dhoble SJ. .Photoluminescence in GdVO4 : Bi3+, Eu3+ red phosphor[J].Applied physics, A. Materials science & processing,2000(1):39-45. |
| [13] | Su X Q;Yan B;Huang H H .In situ co-precipitation synthesis and luminescence of GdVO4:Eu3+ and YxGd1-xVO4:Eu3+ microcrystalline phosphors derived from the assembly of hybrid precursors[J].Journal of Alloys and Compounds,2005,399(1-2):251. |
| [14] | M. Anitha;P. Ramakrishnan;A. Chatterjee;G. Alexander;H. Singh .Spectral properties and emission efficiencies of GdVO_4 phosphors[J].Applied physics, A. Materials science & processing,2002(2):153-162. |
| [15] | Li G Z;Wang Z L;Yu M;Quan Z W Lin J .Fabrication and optical properties of core-shell structured spherical SiO2@GdVO4:Eu3+ phosphors via sol-gel process[J].Journal of Solid State Chemistry,2006,179(08):2698. |
| [16] | Li, X.;Yu, M.;Hou, Z.;Li, G.;Ma, P.;Wang, W.;Cheng, Z.;Lin, J. .One-dimensional GdVO_4:Ln~(3+) (Ln=Eu, Dy, Sm) nanofibers: Electrospinning preparation and luminescence properties[J].Journal of Solid State Chemistry,2011(1):141-148. |
| [17] | Calderón-Villajos R;Zaldo C;Cascales C .Hydrothermal processes for Tm3+-doped GdVO4 nanocrystalline morphologies and their photoluminescence properties[J].Phys Procedia,2010,8:109. |
| [18] | Tang S;Huang M L;Wang J L;Yu F D Shang G L Wu J H .Hydrothermal synthesis and luminescence properties of GdVO4:Ln3 + (Ln =Eu,Sm,Dy) phosphors[J].Journal of Alloys and Compounds,2012,513:474. |
| [19] | He, F.;Yang, P.;Niu, N.;Wang, W.;Gai, S.;Wang, D.;Lin, J. .Hydrothermal synthesis and luminescent properties of YVO_4:Ln~(3+) (Ln = Eu, Dy, and Sm) microspheres[J].Journal of Colloid and Interface Science,2010(1):71-78. |
| [20] | Juan Wang;Mirabbos Hojamberdiev;Yunhua Xu .Effects of different organic additives on the formation of YVO_4:Eu~(3+) microspheres under hydrothermal conditions[J].Solid state sciences,2011(7):1401-1406. |
| [21] | Choi, S;Moon, YM;Jung, HK .Luminescent properties of PEG-added nanocrystalline YVO4:Eu3+ phosphor prepared by a hydrothermal method[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2010(4):549-553. |
| [22] | Liu C;Zhao S S;Ji X J;Wang B Ma D X .A novel reflux-hydrothermal synthesis of thermally stable lamellar crystalline zirconia via SDS template[J].Materials Chemistry and Physics,2012,133(2-3):579. |
| [23] | Yan Y L;Mirabbos H;Xu Y H;Wang J Luan Z X.Hydrothermally-induced morphological transformation of GdVO4:Eu3+[J].Materials Chemistry and Physics,2013(139):298. |
| [24] | 毕会芳,李霞.形貌可控的LaPO4：Eu3+荧光粉的制备与发光性能研究[J].中国稀土学报,2011(06):699-703. |
| [25] | 周立亚,黄君丽,易灵红,龚孟濂,石建新.白光LED用荧光材料Ba3 Gd（ BO3 ）3：Eu3+的发光性能研究[J].中国稀土学报,2009(01):31-35. |
| [26] | 张吉林,洪广言.稀土纳米发光材料研究进展[J].发光学报,2005(03):285-293. |
| [27] | 光善仪,张超,徐洪耀,王海燕,林乃波.稀土Y2-xSiO5：Eux3+纳米发光材料结构对发光性能影响及发光机理研究[J].无机化学学报,2007(06):999-1004. |
| [28] | Osawa S.;Iyoda T.;Enoki Y.;Komuro S.;Morikawa T.;Katsumata T. .Effects of composition on the optical properties of doped and nondoped GdVO4[J].Journal of Crystal Growth,1999(Pt.1):444-448. |
| [29] | 李盼来,王志军,郭庆林,杨志平.白光LED用KCaPO4：Eu3+红色荧光粉制备及其发光特性[J].中国稀土学报,2010(06):755-759. |
| [30] | 肖林久,孙彦彬,邱关明,陈永杰,代少俊.纳米稀土发光材料的研究进展[J].稀土,2002(04):46-49. |
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