系统讨论了La3+,Sc3+,Gd3+和Lu3+掺杂对(Y0.97Tb0.03)2SiO5的光致和阴极射线发光性能的影响,发现不同稀土元素对(Y0.97Tb0.06)2SiO5的发光性能有不同的作用,发光强度与掺杂稀土元素的种类和含量有关.在光致条件下,当La3+,Sc3+,Gd3+和Lu3+掺杂量分别为0.05,0.30,0.30和0.20时,与(Y0.97Tb0.03)2DiO5相比,(Y0 97-xRExTb0.0)2SiO5的发光强度分别变化了+10%,-30%,-15%和+20%.稀土元素掺杂对激活剂有显著的稀释作用,随掺杂稀土元素含量增大,激活剂的猝灭浓度表现出增大的趋势.稀土元素掺杂对(Y0.97Tb0.03)2SiO5的色纯度也有影响,不同稀土元素掺杂后荧光粉发光的色纯度表现出持续升高或降低的趋势.在阴极射线作用下,稀土掺杂(Y0.97Tb0.03)2SiO5的发光强度均得到提高,提高的程度依La3+,Gd3+,Lu3+和Sc3+次序分别为10%,25%,25%和5%～10%.根据稀土元素对发光性能的影响分析了稀土元素掺杂后(Y0.97Tb0.03)2SiO5发光性能产生差别的原因.
参考文献
| [1] | Lee RY.;Penczek J.;Wagner BK.;Yocom PN.;Summers CJ.;Zhang FL. .Investigation of Ce-doped silicates for low voltage field emission displays[J].Journal of Vacuum Science & Technology, B. Microelectronics and Nanometer Structures: Processing, Measurement and Phenomena,1998(2):855-857. |
| [2] | Markku Lesketa;Juha Sulkkanen .Ce3+ and Tb3+-activated rare earth oxyorthosilicates[J].Journal of the Less-Common Metals,1985,112:71. |
| [3] | Erder S;Roy R;Harshe G et al.The effect of powder preparation process on the luminescent properties of yttrium oxide based phosphor materials[J].Materials Research Bulletin,1995,30(06):745. |
| [4] | Yun Chankang;Wuled Leuggoro I;Bin Park Seung et al.Y2SiO5:Ce phosphor particles 0.5 ～ 1.4 μm in size with spherical morphology[J].Journal of Solid State Chemistry,1999,146:168. |
| [5] | Segal D L;Atkinson A .Wet chemical synthesis of cathodoluminescent[J].British Ceramic Transactions,1988,87:87. |
| [6] | Mesquita A H G;Bril A .Preparation and cathodoluminescence of Ce3+ -activated yttrium silicates and some isostructural composite[J].Materials Research Bulletin,1969,4:643. |
| [7] | Lin J;Su Q;Zhang H .Crystal structure dependence of the luminescence of rare earth ions ( Ce3+, Tb3 +, Sm3+) in Y2SiO5[J].Materials Research Bulletin,1996,32(02):189. |
| [8] | Stoffers C.;Penczek J.;Wagner BK.;Summers CJ.;Lee RY. .Saturation effects in Y2SiO5 : Tb under low-voltage excitation[J].Applied physics letters,2000(8):949-951. |
| [9] | Marsh Paul J;Silver Jack;Vecht Aron et al.Cathodoluminescence studies of yttrium silicate:cerium phosphors synthesized by a sol-gel process[J].Journal of Luminescence,2002,97:229. |
| [10] | Wang Jiaguo;Tian Shujian;Li Guobao et al.Influence of rare earth elements (Sc, La, Gd, and Lu) to the luminescent properties of FED blue phosphor Y2SiO5: Ce[J].Journal of the Electrochemical Society,2001,148:H61. |
| [11] | Huan Jiao;Fuhui Liao;Shujian Tian .Influence of Rare Earth Sc and La to the Luminescent Properties of FED Blue Phosphor Y_2SiO_5:Ce[J].Journal of the Electrochemical Society,2004(7):J39-J42. |
| [12] | Yun Chan Kang;Ignatius Wuled Lenggoro;Kikuo Okuyama;Seung Bin Prak .Luminescence characteristics of Y{sub}2SiO{sub}5: Tb phosphor particles directly prepared by the spray pyrolysis method[J].Journal of the Electrochemical Society,1999(3):1227-1230. |
| [13] | ZhangHX;Kan C H;ZhouY et al.Deposition and photoluminescence of sol-gel derived Tb3 +:Zn2SiO4 films on Si02/Si[J].Thin Solid Films,2000,370:50. |
| [14] | Bosze EJ.;Hirata GA.;Shea-Rohwer LE.;McKittrick J. .Improving the efficiency of a blue-emitting phosphor by an energy transfer from Gd3+ to Ce3+[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2003(1/2):47-54. |
| [15] | Shigeo Shionoya;Yen William M.Phosphor Handbook[M].Roca Raton:CRC Press,1998:180. |
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%