以六次甲基网胺(hexamethylenetetramine,(CH2)6N4,HMT)为沉淀剂,在GdCl3和EuCl3混合溶液中,利用均匀共沉淀法制得了纳米颗粒.结果表明,获得的Gd2O3:Eu纳米颗粒近似为球形,尺寸均匀,平均粒径为100 nm,且每个球形颗粒由平均粒径为20 nm的微晶聚并而成.Gd2O3:Eu荧光粉在波长612 nm的红光发射来自Eu3+的5D0-7F2电偶极跃迁,发光强度随煅烧温度提高而增强,随Eu3+掺杂摩尔分数的提高而增强.Eu3+掺杂摩尔分数超过7%时,发生浓度淬灭,发光强度减弱.
参考文献
| [1] | Chung-Sik Park;Min-Gi Kwak;Seung-Seok Choi;Yo-Seung Song;Sung-Jei Hong;Jeong-In Han;Deuk Yong Lee .Influence of Eu~(3+) doping content on photoluminescence of Gd_2O_3:Eu~(3+) phosphors prepared by liquid-phase reaction method[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2006(2):199-204. |
| [2] | Lin C C;Lin K M;Li Y Y et al.Sol-gcl synthesis and photoluminescent characteristics of Eu3+-doped Gd2O3nanophosphors[J].Journal of Luminescence,2007,126:795-799. |
| [3] | Kang, Y.C.;Park, S.B.;Lenggoro, I.W.;Okuyama, K. .Gd_2O_3:Eu phosphor particles with sphericity, submicron size and non-aggregation characteristics[J].The journal of physics and chemistry of solids,1999(3):379-384. |
| [4] | Louis C.;Bazzi R.;Flores MA.;Zheng W.;Lebbou K.;Tillement O.;Mercier B.;Dujardin C.;Perriat P. .Synthesis and characterization of Gd2O3 : Eu3+ phosphor nanoparticles by a sol-lyophilization technique[J].International Journal of Quantum Chemistry,2003(2):335-341. |
| [5] | Li I G;Li X D;Sun x D et al.Monodispersed colloidal spheres for uniform Y2O3:Eu3+ red-phosphor particles and gready enhanced luminescence by simultaneous Gd+3 doping[J].Journal of Physical Chemistry C,2008,112:11707-11716. |
| [6] | Liu G;Hong G;Sun D .Coating Gd2O3:Eu phosphors with silica by sohd-state reaction at room temperature[J].Powder Technology,2004,145:149-153. |
| [7] | Cress, CD;Redino, CS;Landi, BJ;Raffaelle, RP .Alpha-particle-induced luminescence of rare-earth-doped Y2O3 nanophosphors[J].Journal of Solid State Chemistry,2008(8):2041-2045. |
| [8] | Zhang TS;Ma J;Kong LB;Hing P;Kilner JA .Preparation and mechanical properties of dense Ce0.8W0.2O2-delta ceramics[J].Solid state ionics,2004(1/2):191-196. |
| [9] | Rojas T C;M Ocana .Uniform nanoparticles of Pr(111)/Ceria solid solutions prepared by homogeneous precipitation[J].Scripta Materialia,2002,46:655-660. |
| [10] | Masakuni Gzawa;Ryota Onoe;Hajime Kato .Formation and decomposition of some rare earth (RE = La, Ce, Pr) hydroxides and oxides by homogeneous precipitation[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2006(0):556-559. |
| [11] | P-L Chen;I-W Chen .Reactive Cerium(IV)oxide powders by the homogeneous precipitation method[J].Journal of the American Ceramic Society,1993,76(06):1577-1583. |
| [12] | 孙家跃;杜海燕.固体发光材料[M].北京:化学工业出版社,2004:91-92,160. |
| [13] | Li YH;Hong GY .Synthesis and luminescence properties of nanocrystalline Gd2O3 : Eu3+ by combustion process[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2007(2):297-301. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%