Giant photostriction of CaCu3Ti4O12 ceramics under visible light illumination
文献类型：期刊论文
| 作者 | Li, X; Chen, C; Zhang, FQ; Huang, XT; Yi, ZG |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2020-03-16 |
| 期号 | 11 |
| ISSN号 | 0003-6951 |
| DOI | 10.1063/1.5142882 |
| 文献子类 | Article |
| 英文摘要 | Ferroelectrics with a perovskite structure, exhibiting strong coupling between photons, carriers, and phonons, have been demonstrated to show a strong photostrictive response. Limited by the optical bandgap, most of the reported ferroelectric perovskites respond only to UV light or weakly respond to visible light below 550nm. Herein, the photostrictive performance of CaCu3Ti4O12 (CCTO) ceramics, with a low bandgap of similar to 1.5eV (ideal for solar spectrum absorption), is comprehensively investigated. Although the compound presents no ferroelectricity, in general, a giant photostriction of similar to 10(-3) with a large photostrictive efficiency of similar to 10(-11) m(3)/W in CCTO ceramics is observed by applying purple (405nm), green (520nm), and red (655nm) laser illumination. Evidenced by the XRD peak shifts under external laser illumination and the phonon mode shifts via the power-dependent Raman spectrum, the light-induced non-thermal deformation in CCTO is attributed to the enhanced stretching of O-Ti-O chains and the distortions of TiO6 octahedrons. The excellent and uniform photostrictive performance of CCTO ceramics in the visible-light region makes them potential candidates for practical applications in next-generation photo-driven electromechanical devices. |
| WOS关键词 | HIGH-DIELECTRIC-CONSTANT ; BEHAVIOR |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28223]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Li, X,Chen, C,Zhang, FQ,et al. Giant photostriction of CaCu3Ti4O12 ceramics under visible light illumination[J]. APPLIED PHYSICS LETTERS,2020(11). |
| APA | Li, X,Chen, C,Zhang, FQ,Huang, XT,&Yi, ZG.(2020).Giant photostriction of CaCu3Ti4O12 ceramics under visible light illumination.APPLIED PHYSICS LETTERS(11). |
| MLA | Li, X,et al."Giant photostriction of CaCu3Ti4O12 ceramics under visible light illumination".APPLIED PHYSICS LETTERS .11(2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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