采用共沉淀法在氮氢气氛中制备出Y2O3:Ti3+,Eu3+纳米粉体,测量了它的XRD、激发与发射光谱,观测了形貌.通过与Y2O3:Ti3+纳米粉体的光谱比较分析,发现Y2O3中的Ti3+至Eu3+存在能量传递,以致紫外至蓝光区域的光,均能使Eu3+经5D0→7F2等跃迁通道发射出610 nm左右的荧光,于是增强了粉体在红橙光区发光的比重,因此可以调节粉体的发光性能.Y2O3:Ti3+,Eu3+纳米粉体的吸收带从紫外延伸到蓝光区,强荧光带覆盖了整个可见光区,这预示它有望成为新一代白光LED或汞灯的光转换荧光粉.
参考文献
| [1] | Liu Ji,Li Wanwan,Sun Kan.Progress in research on white light emitting diode and its phosphors[J].Materials Review(材料导报),2007,21(8):116-120(in Chinese). |
| [2] | Wang Deliu,Fu Renli,He Hong,et al.Research and development of phosphors forwhite light emitting diode[J].Materials Review(材料导报),2007,21(8):111-115(in Chinese). |
| [3] | Luo Xixian,Cao Wanghe,Sun Fei.The development of silicate matrix phosphors with broad excitation band for phosphor-convered white LED[J].Chinese Science Bulletin,2008,53(19):2923-2930. |
| [4] | Kim J S,Jeon P E,Park Y H,et al.White-light generation through ultraviolet-emitting diode and white-emitting phosphor[J].Appl.Phys.Lett.,2004,85(17):3696-3698. |
| [5] | Sun Xiaoyuan,Zhang Jiahua,Zhang Xia,et al.A single white phosphor suitable for near ultraviolet excitation applied to new generation white LED lighting[J].Chinese Journal of Luminescence (发光学报),2005,26(3):404-406 (in Chinese). |
| [6] | He Hong,Fu Renli,Zhang Xueliang,et al.Photoluminescence spectra tuning of Eu2+ activated orthosilicate phosphors used for white light emitting diodes[J].J.Mater.Sci.:Mater.Electron.,2009,20(5):433-438. |
| [7] | Powell R C,Caslavsky J L,et al.Growth,characterization,and optical spectroscopy of Al2O3:Ti3+[J].J.Appl.Phys.,1985,58(6):2331-2336. |
| [8] | Macalik B,Bausa L E,Garcia-Solé J,et al.Blue emission in Ti-sapphire laser crystals[J].Appl.Phys.B,1992,55:144. |
| [9] | Zeng Guiping,Yao Li,et al.Spectroscopic properties of new phosphor Y2O3:Ti3+ for white LEDs[J].Chinese Journal of Quantum Electronics (量子电子学报),2010,27(6):655-660(in Chinese). |
| [10] | Xie Pingbo,Duan Changkui,Zhang Weiping,et al.The preparation of nanocrystal Y2O3:Eu by combustion method and its luminescent properties[J].Chinese Journal of Luminescence (发光学报),1998,19(2):123-128 (in Chinese). |
| [11] | Huang Zhenguo,Sun Xudong,et al.Precipitation synthesis and sintering of yttria nanopowders[J].Mater.Lett.,2004,58(15):2137-2142. |
| [12] | Zeng Guiping,Dong Qiang,Yao Li,et al.Spectra properties of Ti3+-doped Y2O3 microcrystalline powders[J].Journal V Synthetic Crystals(人工晶体学报(增刊)),2010,39(supplement):139-144(in Chinese). |
| [13] | Kaminskii A A.Laser Crystals:Their Physics and Properties[M].Springer,Berlin,1981 and 1990:139-155. |
| [14] | Wang Weining,Widiyastuti W,Ogi T,et al.Correlations between crystallite/particle size and photoluminescence properties of submicrometer phosphors[J].Chem.Mater.,2007,19(7):1723-1730. |
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%