Improvement of field-emission-lamp characteristics using nitrogen-doped carbon nanocoils》.pdf

Diamond Related Materials 53 (2015) 1–10 Contents lists available at ScienceDirect Diamond Related Materials journal h omepage: /locate/diamond Improvement of field-emission-lamp characteristics using nitrogen-doped carbon nanocoils Kun-Ju Chung a, Nen-Wen Pu b, Meng-Jey Youh c, Yih-Ming Liu d,⁎, Ming-Der Ger d, Kevin Cheng a, Jhih-Cheng Jiang d a School of Defense Science, Chung Cheng Institute of Technology, National Defense University, Dasi, Taoyuan 335, Taiwan b Department of Photonics Engineering, Yuan Ze University, Chung-Li, Taoyuan 320, Taiwan c Department of Information Technology, Hsing Wu University, Linkou, New Taipei City 244, Taiwan d Department of Chemical and Materials Engineering, Chung Cheng Institute of Technology, National Defense University, Dasi, Taoyuan 335, Taiwan a r t i c l e i n f o a b s t r a c t Article history: Carbon nanocoils (CNCs) synthesized using thermal pyrolysis chemical vapor deposition on 304 stainless steel Received 19 September 2014 wire substrates were used as the cathodes of field emission lamps (FELs). The effects of the growth temperature Received in revised form 24 November 2014 on the FE performances were studied, and we observed that uniform and dense CNCs that are suitable for use as Accepted 16 December 2014 FE cathodes can be synthesized at 600 °C. We also found that a nitrogen doping post-treatment can significantly Available online 26 December 2014 improve the FE efficiency of the CNCs. When doped at 200 °C with a nitrogen fl