| Growth behavior of nanocrystalline diamond films on ultrananocrystalline diamond nuclei: The transmission electron microscopy studies | |
|---|---|
| 學年 | 97 |
| 學期 | 1 |
| 出版（發表）日期 | 2009-01-01 |
| 作品名稱 | Growth behavior of nanocrystalline diamond films on ultrananocrystalline diamond nuclei: The transmission electron microscopy studies |
| 作品名稱（其他語言） | |
| 著者 | Wang, Chuan-Sheng; Chen, Huang-Chin; Cheng, Hsiu-Fung; Lin, I-Nan |
| 單位 | 淡江大學物理學系 |
| 出版者 | College Park: American Institute of Physics |
| 著錄名稱、卷期、頁數 | Journal of Applied Physics 105(12), 124311(7pages) |
| 摘要 | Micron-crystalline diamond (MCD) films with a unique microstructure were synthesized using a modified nucleation and growth process, in which a thin layer of ultrananocrystalline diamond (UNCD) was used as nucleation layer for growing diamond films in H2-plasma. Thus obtained (MCD)UNCD diamond films consist of nanosized diamond clusters ( ∼ 10 nm in size) surrounding the large diamond grains ( ∼ 300 nm in size), exhibiting better electron field emission (EFE) properties than the conventional diamond materials with faceted grains. The EFE of these (MCD)UNCD films can be turned on at E0 = 11.1 V/μm, achieving EFE current density as large as (Je) = 0.7 mA/cm2 at 25 V/μm applied field, which can be attributed to the presence of large proportion of UNCD grains lying in between the MCD grains, forming an electron conduction path and thus facilitating the EFE process. Transmission electron microscopy examinations reveal that such a unique microstructure was formed by agglomeration and coalescence of the nanosized UNCD grains. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0021-8979; 1089-7550 |
| 期刊性質 | 國外 |
| 收錄於 | SCI EI |
| 產學合作 | |
| 通訊作者 | Cheng, Hsiu-Fung |
| 審稿制度 | 是 |
| 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/987654321/91625 ) |
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