| Investigation of oxygen vacancy and photoluminescence in calcium tungstate nanophosphors with different particle sizes | |
| Department | 固体润滑国家重点实验室 |
Li, Yezhou1; Wang ZF(王赵峰)2 ; Sun, Luyi3,4; Wang, Zhilong1; Wang, Shiqin1; Liu, Xiong1; Wang, Yuhua5; Wang ZF(王赵峰)
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| 2014 | |
| Source Publication | Materials Research Bulletin
 |
| ISSN | 0025-5408 |
| Volume | 50Pages:36-41 |
| Abstract | Calcium tungstate (CaWO4) nanophosphors with the particle sizes from 35 to 90 nm were synthesized by a hydrothermal process through exactly controlling the pre-treated conditions. The influence of particle size on oxygen vacancy and photoluminescence properties in CaWO4 nanophosphors was investigated and discussed. The crystal structure of the CaWO4 nanophosphors presented a certain level of distortion due to the high concentration of oxygen vacancy. Under 350 nm excitation, a clear green emission aroused by oxygen vacancy was observed. The possible luminescence processes for the matrix and oxygen vacancy were proposed. The luminescence spectra of the nanophosphors revealed that the emission and absorption intensity aroused by oxygen vacancy were both enhanced when the size is decreased. On the basis of the above results, the essential relationship between particle size and oxygen vacancy in CaWO4 nanophosphors was concluded that the concentration of oxygen vacancy could be increased by reducing its size, which was further confirmed by decay lifetimes. |
| Keyword | Optical Materials Defects Luminescence |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1016/j.materresbull.2013.10.022 |
| Funding Organization | the National Natural Science Foundation of China (No. 51205385);the National Science Foundation (Partnerships for Research and Education in Materials, DMR-1205670);the Air Force Offive of Scientific Research (No. FA9550-12-1-0159);the American Chemical Society Petroleum Research Fund (No. 51833-UN17) |
| Indexed By | SCI |
| If | 2.288 |
| Language | 英语 |
| compositor | 第二作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/20285 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Wang, Yuhua; Wang ZF(王赵峰) |
| Affiliation | 1.Gansu Univ Tradit Chinese Med, Dept Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 3.Univ Connecticut, Inst Mat Sci, Dept Chem & Biomol Engn, Storrs, CT 06269 USA 4.Univ Connecticut, Inst Mat Sci, Polymer Program, Storrs, CT 06269 USA 5.Lanzhou Univ, Sch Phys Sci & Technol, Dept Mat Sci, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Yezhou,Wang ZF,Sun, Luyi,et al. Investigation of oxygen vacancy and photoluminescence in calcium tungstate nanophosphors with different particle sizes[J]. Materials Research Bulletin,2014,50:36-41. |
| APA | Li, Yezhou.,Wang ZF.,Sun, Luyi.,Wang, Zhilong.,Wang, Shiqin.,...&王赵峰.(2014).Investigation of oxygen vacancy and photoluminescence in calcium tungstate nanophosphors with different particle sizes.Materials Research Bulletin,50,36-41. |
| MLA | Li, Yezhou,et al."Investigation of oxygen vacancy and photoluminescence in calcium tungstate nanophosphors with different particle sizes".Materials Research Bulletin 50(2014):36-41. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 1-s2.0-S002554081300（1546KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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