会议专题

Enhanced Field Emission Property from Hills-like and Stars-like Carbon Nanotube Films

Carbon nanotube (CNT) films with special surface morphology, such as hills-like and stars-like, were synthesized on silicon substrate and the field emission properties were examined. The nanotubes were fabricated by thermal chemical vapor deposition using co-sputtered NiTi alloy film as catalyst. The hills-like and stars-like CNT films showed good field emission properties of low turn-on electric field and large current density. The turn-on electric field values required to obtain a 10 μA /cm2 current density for hills-like and stars-tike CNT films were determined at about 1.02 and 1.15V/ inn, respectively. At an applied macroscopic field of 2. 4 V/μm, die current densities reached 4. 32 and 6. 88 mA/ cm2, respectively. The field enhancement factor β of hills-tike and stars-like CNT films, calculated from the FowlerNordheim plots, were about 10 113 and 6 840. The good field-emission behavior is ascribed to the combined effects of the intrinsic field emission of CNT and the rough morphology of the film surface.

Carbon Nanolubes (CNTs) Field Emission Hills-tike Stars-tike

Ting Chen Pingsheng Guo Lili Wang Tao Feng Zhuo Sun Yiwei Chen Wenxiu Que Zhejuan Zhang Lifeng Lin

Department of Physics; Engineering Research Center for Nanophotnics & Advanced Instrument, Ministry of Education; East China Normal University,North Zhongshan Rd. 3663, Shanghai 200062, China

国际会议

2007亚洲显示国际会议(AD07)

上海

英文

1773-1776

2007-03-12(万方平台首次上网日期,不代表论文的发表时间)