Carbon Nanoparticles on Carbon Fabric for Flexible and HighPerformance Field Emitters
نویسندگان
چکیده
Carbon nanoparticles (CNPs) are grown on fl exible carbon fabric via a simple and low-cost fl ame synthesis process. The entire struture of the carbon fabric substrate retains its high fl exibility after the growth of CNPs and can even be rolled-up and twisted to a large degree without affecting the electric characteristics. No appreciable changes in the conductance can be observed under different bending curvatures after hundreds of bending cycles. The thermal conductivity of the carbon fabric with CNPs is about 2.34 W m − 1 K − 1 , about one order of magnitude higher than that of most polymer substrates. The fi eld emitter fabricated using the structure has a low threshold electric fi eld of around 2.8 V μ m − 1 , and a high fi eld emission current density of 108 mA cm − 2 , which is about two to four orders of magnitude higher than that of most polymer substrate-based fl exible CNT fi eld emitters. These results indicate that CNPs on carbon fabric have potential applications in fl exible electronics devices and displays.
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