教師資料查詢 | 類別: 期刊論文 | 教師: 林諭男 I-nan Lin (瀏覽個人網頁)

標題:Modification of ultrananocrystalline diamond film microstructure via Fe-coating and annealing for enhancement of electron field emission properties
學年101
學期1
出版(發表)日期2012/08/01
作品名稱Modification of ultrananocrystalline diamond film microstructure via Fe-coating and annealing for enhancement of electron field emission properties
作品名稱(其他語言)
著者Teng, Kuang-yau; Shih, Wen-ching; Huang, Pin-chang; Chen, Huang-chin; Tang, Chen-yau; Lin, I-nan
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Journal of Applied Physics 112(3), 033708(8pages)
摘要The interaction between Fe-coatings and ultrananocrystalline diamond (UNCD) films during annealing was investigated in detail using transmission electron microscopy. The thin Fe-coating first formed nanosized Fe-clusters and then catalytically dissociated the diamond, re-precipitating carbon to form nanosized graphite clusters. These clusters formed conducting networks that facilitated electron transport and greatly improved the electron field emission (EFE) properties of the UNCD films. The extent of enhancement varied markedly with annealing temperature and atmosphere. For H2-annealed films, EFE behavior was optimized by annealing at 900 °C. EFE was turned on at (E0)H2 = 1.2 V/μm, attaining EFE current density of (Je)H2 = 772.0 μA/cm2 at an applied field of 8.8 V/mm. These characteristics were superior to those of UNCD films NH3-annealed at 850 °C. The inferior EFE properties for the NH3-annealed samples were attributed to reaction of NH3 with the hydrocarbon phase that encapsulated the nanosized diamond grains, hindering Fe–diamond interaction.
關鍵字
語言英文
ISSN0021-8979
期刊性質國外
收錄於
產學合作
通訊作者Lin, I-nan
審稿制度
國別美國
公開徵稿
出版型式紙本
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