期刊論文
| 學年 | 95 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2007-05-01 |
| 作品名稱 | Charge transfer in nanocrystalline-Au/ZnO nanorods investigated by x-ray spectroscopy and scanning photoelectron microscopy |
| 作品名稱（其他語言） | |
| 著者 | Chiou, J. W.; Ray, S. C.; Tsai, H. M.; Pao, C. W.; Chien, F. Z.; Pong, W. F. |
| 單位 | 淡江大學物理學系 |
| 出版者 | College Park: American Institute of Physics (AIP) |
| 著錄名稱、卷期、頁數 | Applied Physics Letters 90(19), pp.192112(3 pages) |
| 摘要 | O K- and Zn and Au L3-edge x-ray absorption near-edge structure (XANES), x-ray emission spectroscopy (XES), and scanning photoelectron microscopy (SPEM) are performed to investigate the electronic structure of ZnO nanorods with nanocrystalline (nc)-Au particles grown on the surfaces. The XANES spectra of nc-Au/ZnO nanorods reveal the decrease of the number of both O 2p and Zn 4s/3d unoccupied states with the increase of the nc-Au particle size. The number of Au 6s/5d unoccupied states increases when the size of nc-Au particle decreases, indicating that the deposition of nc-Au particles on the surface of ZnO nanorods promotes charge transfer from the ZnO nanorods to nc-Au particles. Excitation energy dependent XES and SPEM spectra show that the number of electrons in the valence band of O 2p-Zn 4sp hybridized states decreases as the nc-Au particle size increases, revealing that more electrons are excited from the valence band to the conduction band of ZnO nanorods and the storage of electrons in nc-Au particles. |
| 關鍵字 | charge exchange; gold; zinc compounds; II-VI semiconductors; nanostructured materials; XANES; photoelectron microscopy; particle size; valence bands; conduction bands |
| 語言 | en |
| ISSN | 0003-6951 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | 國內 |
| 通訊作者 | |
| 審稿制度 | |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27707 ) |