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Chin. Phys. B, 2011, Vol. 20(3): 037903    DOI: 10.1088/1674-1056/20/3/037903
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Tuning field emission properties of boron nanocones with catalyst concentration

Li Chen(李晨), Tian Yuan(田园), Wang Deng-Ke(王登科), Shi Xue-Zhao(时雪钊), Hui Chao(惠超), Shen Cheng-Min(申承民), and Gao Hong-Jun(高鸿钧)
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Abstract  Single crystalline boron nanocones are prepared by using a simple spin spread method in which Fe3O4 nanoparticles are pre-manipulated on Si(111) to form catalyst patterns of different densities. The density of boron nanocones can be tuned by changing the concentration of catalyst nanoparticles. High-resolution transmission electron microscopy analysis shows that the boron nanocone has a β-tetragonal structure with good crystallization. The field emission behaviour is optimal when the spacing distance is close to the nanocone length, which indicates that this simple spin spread method has great potential applications in electron emission nanodevices.
Keywords:  boron nanocone      spin spread method      optimize      field emission property  
Received:  21 July 2010      Revised:  18 November 2010      Accepted manuscript online: 
PACS:  79.70.+q (Field emission, ionization, evaporation, and desorption)  
  61.46.Km (Structure of nanowires and nanorods (long, free or loosely attached, quantum wires and quantum rods, but not gate-isolated embedded quantum wires))  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50872147 and U0734003), the National High Technology Research and Development Program (Grant No. 2007AA03Z305), and the National Basic Research Program of China (Grant No. 2007CB935503).

Cite this article: 

Li Chen(李晨), Tian Yuan(田园), Wang Deng-Ke(王登科), Shi Xue-Zhao(时雪钊), Hui Chao(惠超), Shen Cheng-Min(申承民), and Gao Hong-Jun(高鸿钧) Tuning field emission properties of boron nanocones with catalyst concentration 2011 Chin. Phys. B 20 037903

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