以Zn(NO_3)_2·2H_2O、CO(NH_2)_2 、Eu(NO_3)_3·6H_2O和LiNO_3·2H_2O为原料,采用均相共沉淀制备了粒径为20～40 nm的Eu,Li共掺的纳米ZnO荧光粉,用SEM、XRD、TG-DSC、FL等检测手段对样品进行了表征.结果表明:样品的荧光性能与热处理温度及Eu,Li的掺杂比例密切相关,掺杂的ZnO荧光粉呈现出Eu的特征发射,其发射主峰位于611 nm处.
The nano-phosphor powders of Eu, Li co-doped ZnO were prepared by homogeneous co-precipitation and thermal decomposition method using Zn(NO_3)_2·2H_2O,CO(NH_2)_2,Eu(NO_3)_3·6H_2O and LiNO_3·2H_2O as raw materials. The characteristics of samples were investigated by means of TG-DSC, XRD, SEM, FL. The results showed that the samples exhibited normal size distribution, whose size was about 20～40 nm. The photoluminescence intensity of samples was interrelated with thermal decomposition temperature, ratio of Li and Eu. The maximum emission spectra peak of samples was at λ_(em)=611 nm with 463 nm excitation, corresponding to ~5D_0→~7F_2 transition of Eu.
参考文献
| [1] | Service R F .Will UV lasers beat the blues[J].Science,1997,276:895-897. |
| [2] | Wang ZL .Zinc oxide nanostructures: growth, properties and applications[J].Journal of Physics. Condensed Matter,2004(25):R829-R858. |
| [3] | 刘桂香,徐光亮,罗庆平.室温固相化学法制备掺杂纳米氧化锌[J].电子元件与材料,2006(10):37-40. |
| [4] | 胡文远,杨定明,刘勋,张铁军.机械力固相化学反应法制备纳米氧化锌基红色荧光粉[J].发光学报,2007(06):919-922. |
| [5] | 夏昌奎,HUANG Jian-feng,曹丽云,WU Jian-peng,贺海燕.微波水热法制备ZnO纳米晶[J].人工晶体学报,2008(04):833-838. |
| [6] | 沈琳,赵宗彬,邱介山,邓文雅.溶胶-凝胶法合成ZnO纳米材料及其抗菌性能研究[J].功能材料,2007(11):1908-1911. |
| [7] | 李斌,杜芳林.沉淀法制备纳米ZnO粉体[J].青岛科技大学学报(自然科学版),2004(01):21-25. |
| [8] | 王艳香,孙健,范学运,余熙.直接沉淀法制备纳米ZnO粉体[J].中国陶瓷,2007(11):31-33,37. |
| [9] | 汤皎宁,龚晓钟,李均钦.均匀沉淀法制备纳米氧化锌的研究[J].无机材料学报,2006(01):65-69. |
| [10] | 徐彭寿,孙玉明,施朝淑,徐法强,潘海斌.ZnO及其缺陷的电子结构[J].中国科学A辑,2001(04):358-365. |
| [11] | 辛显双,周百斌,吕树臣,苏文辉.掺铕纳米氧化锌的制备及其发光性质[J].物理学报,2005(04):1859-1862. |
| [12] | 宋国利,梁红,孙凯霞.纳米晶ZnO可见发射机制的研究[J].光子学报,2004(04):485-488. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%