| Effect of annealing on structural and optical properties of lead tungstate microcrystals | |
| H. F. Pang; Z. J. Li; X. Xiang; C. L. Zhang; Y. Q. Fu; X. T. Zu | |
| 2011 | |
| 发表期刊 | Chinese Physics B
 |
| ISSN | 1674-1056 |
| 卷号 | 20期号:11 |
| 摘要 | Shuttle-like lead tungstate (PbWO(4)) microcrystals are synthesized at room temperature using the precipitation method with the cetyltrimethyl ammonium bromide. Results from both the X-ray diffraction and the scanning electron microscopy show that the lattice distortions of the PbWO4 microcrystals are reduced significantly when the annealing temperature is increased to 873 K. The result from the ultraviolet-visible diffuse reflectance spectroscopy shows that the exciton absorption appears in the sample annealed at 673 K. The self-trapped exciton luminescence due to the Jahn-Teller effect is also observed in the blue band. The interstitial oxygen ions in the WO(4)(2-) groups are mainly resposible for the enhancement effect of the green luminescence of the annealed samples. The above results are supported by the spectrum analysis of the as-grown and the post-annealed samples using the X-ray photoelectron spectroscopy. |
| 部门归属 | [pang hua-feng; li zhi-jie; xiang xia; zhang chun-lai; zu xiao-tao] univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. [xiang xia; zu xiao-tao] chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. [fu yong-qing] univ w scotland, thin film ctr, paisley pa1 2be, renfrew, scotland.;zu, xt (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china;xtzu@uestc.edu.cn |
| 关键词 | Pbwo(4) Microcrystal Annealing Defects Photoluminescence Pbwo4 Single-crystals Luminescence Absorption Centers |
| URL | 查看原文 |
| WOS记录号 | WOS:000298491700061 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/30613 |
| 专题 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | H. F. Pang,Z. J. Li,X. Xiang,et al. Effect of annealing on structural and optical properties of lead tungstate microcrystals[J]. Chinese Physics B,2011,20(11). |
| APA | H. F. Pang,Z. J. Li,X. Xiang,C. L. Zhang,Y. Q. Fu,&X. T. Zu.(2011).Effect of annealing on structural and optical properties of lead tungstate microcrystals.Chinese Physics B,20(11). |
| MLA | H. F. Pang,et al."Effect of annealing on structural and optical properties of lead tungstate microcrystals".Chinese Physics B 20.11(2011). |
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