Electron Field Emission Enhancement of Vertically Aligned Ultrananocrystalline Diamond-Coated ZnO Core–Shell Heterostructured Nanorods

doi:10.1002/smll.201301293

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/97217

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题名:	Electron Field Emission Enhancement of Vertically Aligned Ultrananocrystalline Diamond-Coated ZnO Core–Shell Heterostructured Nanorods
作者:	Kamatchi Jothiramalingam Sankaran;Manekkathodi Afsal;Lou, Shiu-Cheng;Chen, Huang-Chin;Chen, Chu-lung;Lee, Chi-Young;Chen, Lih-Juann;Tai, Nyan-Hwa;Lin, I-Nan
贡献者:	淡江大學物理學系
关键词:	core–shell heterostructures;ultrananocrystalline diamond needles;graphite layer;ZnO nanorods;electron field emission;plasma illumination
日期:	2014-01
上传时间:	2014-03-18 10:33:01 (UTC+8)
出版者:	Weinheim: Wiley - V C H Verlag GmbH & Co. KGaA
摘要:	Enhanced electron field emission (EFE) behavior of a core–shell heterostructure, where ZnO nanorods (ZNRs) form the core and ultrananocrystalline diamond needles (UNCDNs) form the shell, is reported. EFE properties of ZNR-UNCDN core–shell heterostructures show a high emission current density of 5.5 mA cm−2 at an applied field of 4.25 V μm−1, and a low turn-on field of 2.08 V μm−1 compared to the 1.67 mA cm−2 emission current density (at an applied field of 28.7 V μm−1) and 16.6 V μm−1 turn-on field for bare ZNRs. Such an enhancement in the field emission originates from the unique materials combination, resulting in good electron transport from ZNRs to UNCDNs and efficient field emission of electrons from the UNCDNs. The potential application of these materials is demonstrated by the plasma illumination measurements that lowering the threshold voltage by 160 V confirms the role of ZNR-UNCDN core–shell heterostructures in the enhancement of electron emission.
關聯:	Small 10(1), pp.179–185
DOI:	10.1002/smll.201301293
显示于类别:	[物理學系暨研究所] 期刊論文

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