標題: Fabrication of an ultra-nanocrystalline diamond-coated silicon wire array with enhanced field-emission performance
作者: Tzeng, Yu-Fen
Liu, Kao-Hsiang
Lee, Yen-Chih
Lin, Sue-Jian
Lin, I-Nan
Lee, Chi-Young
Chiu, Hsin-Tien
應用化學系
Department of Applied Chemistry
公開日期: 31-Oct-2007
摘要: Large- area ultra- nanocrystalline diamond- coated silicon nanowire ( UNCD/ SiNW) field- emitter arrays were prepared by the deposition of ultra- nanocrystalline diamond ( UNCD) on the tips of arrays of silicon nanowires ( SiNWs) with uniform diameters. The electron field- emission ( EFE) behavior of UNCD/ SiNW arrays as well as that of the SiNW arrays has been observed. The SiNWs exhibit good electron field- emission properties with turn- on fields ( E0) of about 7.6 V mu m- 1, which is superior to the EFE properties of planar- silicon materials. The turn- on fields are related to the diameter of the SiNWs. Coating the SiNWs with a UNCD film further improves their EFE properties. The threshold field for attaining J(e) = 0.1 mAcm(-2) EFE current density is 16.0 V mu m(-1) for bare SiNWs and 10.2 V mu m(-1) for UNCD/ SiNWs. The improvement in EFE properties due to the UNCD coating is presumably due to the lower work function of field emission of the UNCD materials, compared to that of the silicon materials.
URI: http://dx.doi.org/10.1088/0957-4484/18/43/435703
http://hdl.handle.net/11536/10214
ISSN: 0957-4484
DOI: 10.1088/0957-4484/18/43/435703
期刊: NANOTECHNOLOGY
Volume: 18
Issue: 43
結束頁: 
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