Investigations of the valence states, cobalt ion distribution, and defect structures in Co-doped ITO films
文献类型：期刊论文
| 作者 | Liu, JW; Lin, Z; Lai, WL; Wu ZH(吴忠华) ; Wu, ZH; An, YK
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| 刊名 | JOURNAL OF MATERIALS RESEARCH
 |
| 出版日期 | 2018 |
| 卷号 | 33期号:16页码:2336-2341 |
| ISSN号 | 0884-2914 |
| DOI | 10.1557/jmr.2018.184 |
| 文献子类 | Article |
| 英文摘要 | The valence states, the distribution of Co ions, and defect structures in the Co-doped ITO films with Co concentrations of 5-13 at.% were examined by X-ray absorption spectroscopy (XAS) at Co, K, and L-edges. The structural analyses and ab initio calculations reveal that the Co atoms are substantially incorporated into the ITO lattice and form cobalt-vacancy complexes, while partial formation of Co-0 species is observed for all the films. The analyses of Co-K edge XAS reveal that the Co-O bond length RCo-O is shortened and the corresponding Debye-Waller factor (sigma(2)) obviously increases with Co doping, implying the relaxation of oxygen environment around the substitutional Co ions. The qualitative fitting of Co L-3-edge XAS further confirms the coexistence of Co-0 and Co2+ in the films. The Co atoms mainly occupy the substitutional sites of In2O3 lattices with the metallic Co clusters being about 20-43 at.% for the 5, 7, and 8.5 at.% Co-doped ITO films. However, a significant fraction (similar to 57 at.%) of metallic Co clusters is found in the 13 at.% Co-doped ITO film. |
| 电子版国际标准刊号 | 2044-5326 |
| WOS关键词 | RAY-ABSORPTION-SPECTROSCOPY ; THIN-FILMS ; FERROMAGNETISM |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000443025100008 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286253]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu, JW,Lin, Z,Lai, WL,et al. Investigations of the valence states, cobalt ion distribution, and defect structures in Co-doped ITO films[J]. JOURNAL OF MATERIALS RESEARCH,2018,33(16):2336-2341. |
| APA | Liu, JW,Lin, Z,Lai, WL,吴忠华,Wu, ZH,&An, YK.(2018).Investigations of the valence states, cobalt ion distribution, and defect structures in Co-doped ITO films.JOURNAL OF MATERIALS RESEARCH,33(16),2336-2341. |
| MLA | Liu, JW,et al."Investigations of the valence states, cobalt ion distribution, and defect structures in Co-doped ITO films".JOURNAL OF MATERIALS RESEARCH 33.16(2018):2336-2341. |
入库方式： OAI收割
来源：高能物理研究所
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