The 3D-tomography of the nano-clusters formed by Fe-coating and annealing of diamond films for enhancing their surface electron field emitters
學年 101
學期 1
出版（發表）日期 2012-08-01
作品名稱 The 3D-tomography of the nano-clusters formed by Fe-coating and annealing of diamond films for enhancing their surface electron field emitters
作品名稱（其他語言）
著者 Chen, Huang-chin; Lo, Shen-chuan; Lin, Li-jiaun; Huang, Pin-chang; Shih, Wen-ching; Lin, I-nan; Lee, Chi-young
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 AIP Advances 2, 032153(17pages)
摘要 The Fe-coating and H2-annealed processes markedly increased the conductivity and enhanced the surface electron field emission (s-EFE) properties for the diamondfilms. The enhancement on the s-EFE properties for the diamondfilms is presumably owing to the formation of nano-graphite clusters on the surface of the films via the Fe-to-diamond interaction. However, the extent of enhancement varied with the granular structure of the diamondfilms. For the microcrystalline (MCD)films, the s-EFE process can be turned on at (E0)MCD = 1.9 V/μm, achieving a large s-EFE current density of (Je)MCD = 315 μA/cm2 at an applied field of 8.8 V/μm. These s-EFE properties are markedly better than those for Fe-coated/annealed ultrananocrystalline diamond(UNCD)films with (E0)UNCD = 2.0 V/μm and (Je)UNCD = 120 μA/cm2. The transmission electron microscopy showed that the nano-graphite clusters formed an interconnected network for MCDfilms that facilitated the electron transport more markedly, as compared with the isolated nano-graphitic clusters formed at the surface of the UNCDfilms. Therefore, the Fe-coating/annealing processes improved the s-EFE properties for the MCDfilms more markedly than that for the UNCDfilms. The understanding on the distribution of the nano-clusters is of critical importance in elucidating the authentic factor that influences the s-EFE properties of the diamondfilms. Such an understanding is possible only through the 3D-tomographic investigations.
關鍵字
語言 en
ISSN 2158-3226
期刊性質 國外
收錄於
產學合作
通訊作者 Lin, I-nan; Lee, Chi-young
審稿制度 是
國別 USA
公開徵稿
出版型式 電子版
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