以sol-gel法制备了ZnO前驱体,并通过水热反应得到了CdS/ZnO复合颗粒.采用红外光谱(IR)、X射线衍射(XRD)、扫描电镜(SEM)表征其结构、组成及形貌,并对其电致发光(EL)特性进行表征.结果表明CdS纳米晶生长在ZnO基体上;EL谱表明没有煅烧的CdS/ZnO复合颗粒表现为CdS的激子发射,发光强度较纯CdS有了明显的提高;而煅烧后的CdS/ZnO复合颗粒则表现为ZnO的缺陷发射,发光谱的半高宽较纯ZnO有所减小.
参考文献
| [1] | 张立德;牟季美.纳米材料和纳米结构[M].北京:科学出版社,2001:140-143. |
| [2] | Fu ZP.;Yang BF.;Li L.;Dong WW.;Jia C.;Wu W. .An intense ultraviolet photoluminescence in sol-gel ZnO-SiO2 nanocomposites[J].Journal of Physics. Condensed Matter,2003(17):2867-2873. |
| [3] | Mo CM.;Liu YS.;Zhang Y.;Zhang LD.;Li YH. .Enhancement effect of photoluminescence in assemblies of nano-ZnO particles silica aerogels[J].Journal of Applied Physics,1998(8):4389-4391. |
| [4] | Yamamoto A;Atsuta S;Kanemitsu Y .Fabrication and photoluminescence studies of ZnO nanocrystals dispersed in glass films[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,2005(1/4):169-172. |
| [5] | Abdullah M;Shibamoto S;Okuyarna K .[J].Optical Materials,2004,26(01):95-100. |
| [6] | Mikrajuddin M;Iskandar F;Okuyarna K .[J].Applied Physics Letters,2001,89(11):6431-6434. |
| [7] | Zhao S C;Ji Z G;Yang Y D et al.[J].Materials Letters,2007,61:2547. |
| [8] | 徐斌,程虎民,王艳芹,马季铭.复合纳米粒子SnO2/CdS的制备及性能研究[J].物理化学学报,1999(10):925-929. |
| [9] | Xu L;Wang L;Huang X F et al.[J].Physica E,2000,6(08):129-133. |
| [10] | Service R F .[J].Science,1997,276(5314):895-897. |
| [11] | Pan Z W;Dai Z R;Wang Z L .[J].Science,2001,291(09):1947-1949. |
| [12] | Shibata H;Tampo H;Yamada A et al.[J].Physical Status Solidi C,2006,3(04):1026-1029. |
| [13] | Nanda J.;Kuruvilla BA.;Murthy GL.;Sarma DD.;Narayan KS. .Sizable photocurrent and emission from solid state devices based on CdS nanoparticles[J].Applied physics letters,1998(11):1335-1337. |
| [14] | Wang C Z;Yifeng E F;Fan L Z et al.[J].Advanced Materials,2007,19(21):3677-3681. |
| [15] | Guang-hui Ning;Xiao-peng Zhao;Jia Li;Chang-qing Zhang .Hugely enhanced electroluminescence from mesoporous ZnO particles[J].Optical materials,2006(4):385-390. |
| [16] | 陈政,王玲玲,姜万涛,严春美,赵晓鹏.多孔纳米氧化锌的模板法优化制备与电致发光特性[J].无机材料学报,2007(05):901-906. |
| [17] | Wang Y;Sun A;Mchagh J .[J].Journal of Chemical Physics,1990,92(11):6927-6939. |
| [18] | Spahnel L;Haase M;weller H et al.[J].Journal of the American Chemical Society,1987,109:5649-5655. |
| [19] | Yan CM;Chen Z;Zhao XP .Enhanced electroluminescence of ZnO nanocrystalline annealing from mesoporous precursors[J].Solid State Communications,2006(1):18-22. |
| [20] | Zhao, XP;Chen, Z;Luo, YJ;Wang, LL .Giant enhanced infrared and orange emissions of ZnO nanoparticles induced by rich oxygen atmosphere[J].Solid State Communications,2008(11/12):447-451. |
| [21] | 孙聆东,雪峰,钱程,廖春生,严纯华.水热法合成CdS/ZnO核壳结构纳米微粒[J].高等学校化学学报,2001(06):879-882. |
| [22] | Kohan A F;Ceder G;Morgan D et al.[J].Physical Review B:Condensed Matter,2000,61(22):15019-15027. |
| [23] | Vanheusden K;Seager H C;Warren W L et al.[J].Applied Physics Letters,1996,68(03):403-405. |
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%