采用固相反应工艺制备了不同浓度掺杂Fe的四针状氧化锌晶须(T-ZnO),利用XRD研究了掺杂后T-ZnO的物相结构,用荧光光谱研究其发光性能.结果表明,Fe在ZnO中的固溶度约为0.7%(摩尔分数),超过此极限,则Fe以第二相(ZnFe2O4)形式出现.掺杂后的T-ZnO出现明显的绿光发光特征,其发光强度随掺杂浓度增加先降低后增加.分析认为,绿光的发光机理是电子由VO到VZn跃迁引起的.
参考文献
| [1] | Leiter F;Zhou H;Henecker F et al.[J].Physical Review B,2001,308-310:945-948. |
| [2] | Monteiro T;Boemare C;Soares M J et al.[J].Journal of Applied Physics,2003,93(09):8995-9000. |
| [3] | Vanheusden K.;Seager CH.;Tallant DR.;Voigt JA.;Gnade BE.;Warren WL. .MECHANISMS BEHIND GREEN PHOTOLUMINESCENCE IN ZNO PHOSPHOR POWDERS[J].Journal of Applied Physics,1996(10):7983-7990. |
| [4] | van Dijken A.;Vanmaekelbergh D.;Meijerink A.;Meulenkamp EA. .Identification of the transition responsible for the visible emission in ZnO using quantum size effects[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2000(3-4):123-128. |
| [5] | Bixia Lin;Zhuxi Fu;Yunbo Jia .Green luminescent center in undoped zinc oxide films deposited on silicon substrates[J].Applied physics letters,2001(7):943-945. |
| [6] | Kang H S;Kang J S;Kim J W et al.[J].Journal of Applied Physics,2003,95(03):1246-1250. |
| [7] | Ohashi N;Ebisawa N;Sekiguchi N .[J].Applied Physics Letters,2005,86:1-3. |
| [8] | Liu M;Kitai A H;Mascher P .[J].Journal of Luminescence,1992,54:35-42. |
| [9] | Photoluminescence of polycrystalline ZnO under different annealing conditions[J].Journal of Applied Physics,2003(9):5787-5790. |
| [10] | Reynolds DC.;Jogai B.;Morkoc H.;Look DC. .SIMILARITIES IN THE BANDEDGE AND DEEP-CENTRE PHOTOLUMINESCENCE MECHANISMS OF ZNO AND GAN[J].Solid State Communications,1997(9):643-646. |
| [11] | Zhang S B;Wei S H;Zunger A .[J].Physical Review B,2001,61:1-7. |
| [12] | Kohan A F;Ceder G;Morgan D et al.[J].Physical Review B,2000,61:15019-15027. |
| [13] | N. Y. Garces;L. Wang;L. Bai;N. C. Giles;L. E. Halliburton;G. Cantwell .Role of copper in the green luminescence from ZnO crystals[J].Applied physics letters,2002(4):622-624. |
| [14] | Zhang X T;Liu Y C;Zhang J Y .[J].Journal of Crystal Growth,2003,254:80-85. |
| [15] | Zhou Z W;Deng H;Yi J et al.[J].Materials Research Bulletin,1999,34:1563-1567. |
| [16] | Roy VA L;Djurisic A B;Liu H et al.[J].Applied Physics Letters,2003,84:756-758. |
| [17] | Kolesnik S;Dabrowski B Mais .[J].Journal of Applied Physics,2004,95:2582-2586. |
| [18] | Photoluminescence of polycrystalline ZnO under different annealing conditions[J].Journal of Applied Physics,2003(9):5787-5790. |
| [19] | Dai Y.;Zhang Y.;Li QK.;Nan CW. .Synthesis and optical properties of tetrapod-like zinc oxide nanorods[J].Chemical Physics Letters,2002(1/2):83-86. |
| [20] | Yu Y S;Kim G Y;Min B H et al.[J].Journal of the European Ceramic Society,2004,24:1865-1868. |
| [21] | Tuomisto F;Ranki V;Saarinen K .[J].Physical Review Letters,2003,91(20):1-4. |
| [22] | Wang Z L.[J].Materials Today,2004(06):26-33. |
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%