Field Emission Characteristics of Carbon Nanometer Ball Films
| Autor: | 王静 Wang Jing, 顾广瑞 Gu Guang-rui, 吴宝嘉 Wu Bao-jia, 李英爱 Li Ying-ai, 刘智超 Liu Zhi-chao |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
business.industry Scanning electron microscope Nanotechnology Electronic Optical and Magnetic Materials symbols.namesake Field electron emission Carbon film Amorphous carbon Electric field Signal Processing symbols Optoelectronics Nanometre Raman spectroscopy business Instrumentation Current density |
| Zdroj: | Chinese Journal of Liquid Crystals and Displays. 27:297-302 |
| ISSN: | 1007-2780 |
| DOI: | 10.3788/yjyxs20122703.0297 |
| Popis: | Carbon nanometer ball films were deposited on Si(100) by microwave plasma chemical vapor deposition.The structure and surface morphology of carbon nanometer ball films was investigated by using Raman spectroscopy and field emission scanning electron microscope.The carbon nanometer ball film was composed of large numbers of about 2~3 μm-length and 100 nm-width amorphous carbon sheets which were intertwined and interwoven with each other into a ball.The field emission testing of carbon nanometer ball films was performed in a high vacuum system,and good field emission properties with a threshold field of 3.1 V/μm and a current density of 60.7 mA/cm2 at an electric field of 10 V/μm were obtained from the carbon films.A three electric filed model was applied to explaining reasonably the field emission characteristics of carbon nanometer ball films in the low,middle and high electric field region. |
| Databáze: | OpenAIRE |
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