Giant enhancement of luminescence from phosphors through oxygen-vacancy-mediated chemical pressure relaxation
文献类型：期刊论文
| 作者 | Zhang, Kai1,2; Ma, Chong-Geng3; Zhang, Jun-Ying4; Liu, Bo-Mei1; Zhou, Yang1; Guo, Shao-Qiang4; Xu, Jia-Yue2; Hou, Jing-Shan2; Fang, Yong-Zheng2; Zheng, Li-Rong5 |
| 刊名 | Advanced optical materials
 |
| 出版日期 | 2017-10-16 |
| 卷号 | 5期号:20页码:8 |
| 关键词 | Chemical pressure External stimuli Luminescence Oxygen vacancy Phosphors |
| ISSN号 | 2195-1071 |
| DOI | 10.1002/adom.201700448 |
| 通讯作者 | Sun, hong-tao(timothyhsun@gmail.com) |
| 英文摘要 | Relaxing chemical pressure in phosphors with large-size-mismatched dopants, aiming at attaining high-efficiency luminescence and a higher dopant concentration, remains a challenging subject of continuous research effort. originally seen as undesirable and detrimental to the performance of luminescent systems, this study demonstrates that the formation of a tiny amount of oxygen vacancies favors chemical pressure relaxation (cpr), resulting in topotactic transformation of poorly luminescent parent phases to highly luminescent cousins, as exemplified by a model system of bi3+-doped lu2o3. the integration of experimental observations with theoretical calculations reveals that the emergence of oxygen vacancies adjacent to bi3+ can expand its size of coordination geometry, thus releasing the chemical pressure and significantly influencing the emission characteristics. importantly, it is illustrated that the concept of oxygen-vacancy-mediated cpr is sufficiently general to allow the optimization of luminescence from other classes of foreign-ion-doped phosphors plagued by size mismatch. it is suggested that this concept can be applied to an array of optical materials in various forms, and also provides unique opportunities for tuning other properties of functional materials that are sensitive to local coordination environments of dopants. |
| WOS关键词 | CATION SUBSTITUTION ; OXYNITRIDE PHOSPHORS ; OXIDE ; PHOTOLUMINESCENCE ; HYDRIDE ; REDUCTION ; PHASES ; TRANSFORMATION ; CONDUCTIVITY ; NANOCRYSTALS |
| WOS研究方向 | Materials Science ; Optics |
| WOS类目 | Materials Science, Multidisciplinary ; Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:000413024500011 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177135 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Sun, Hong-Tao |
| 作者单位 | 1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China 2.Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China 3.Chongqing Univ Posts & Telecommun, Coll Sci, Chongqing 400065, Peoples R China 4.Beihang Univ, Dept Phys, Beijing 100191, Peoples R China 5.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Kai,Ma, Chong-Geng,Zhang, Jun-Ying,et al. Giant enhancement of luminescence from phosphors through oxygen-vacancy-mediated chemical pressure relaxation[J]. Advanced optical materials,2017,5(20):8. |
| APA | Zhang, Kai.,Ma, Chong-Geng.,Zhang, Jun-Ying.,Liu, Bo-Mei.,Zhou, Yang.,...&Sun, Hong-Tao.(2017).Giant enhancement of luminescence from phosphors through oxygen-vacancy-mediated chemical pressure relaxation.Advanced optical materials,5(20),8. |
| MLA | Zhang, Kai,et al."Giant enhancement of luminescence from phosphors through oxygen-vacancy-mediated chemical pressure relaxation".Advanced optical materials 5.20(2017):8. |
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来源：高能物理研究所
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