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Improved emission uniformity and stability of printed carbon nanotubes in electrolyte |
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| Authors: | Rujia Zou Gannan Zou Shaolin Xue |
| Institution: | a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China b Department of Educational Technology, Nanjing Normal University, Nanjing 210097, PR China c Department of Applied Physics, Donghua University, Shanghai 201620, PR China |
| Abstract: | In this paper, we studied the effect of NaCl electrolyte as a surface treatment on improving the uniformity and stability of field emission of screen-printed carbon nanotubes (CNTs). A short period of the electrolyte treatment of CNT films remarkably increase emission uniformity and stability. Furthermore, the field emission characteristics of screen-printed carbon nanotubes (CNTs) such as low turn-on field, high emission current density and strong adhesion of the CNT film on the substrate were also reinforced after post-treated. SEM, TEM and Raman spectrum study revealed that uniformity and stability of field emission is enhanced by two factors. Firstly, the electrolyte treatment appeared to render the CNT surfaces more actively by exposing more CNTs form the CNT paste, which dominates initial uniformity and stability of field emission. Secondly, the number of opened CNTs and defects CNTs of CNT film were increased by electrical current energy. |
| Keywords: | Carbon nanotubes Screen-printed Emission uniformity Emission stability |
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