论文部分内容阅读
A simple process to fabricate chain-like carbon nanotube(CNT) films by microwave plasma-enhanced chemical vapor deposition(MPCVD) was developed successfully.Prior to deposition,the Ti/Al2O3 substrates were ground with Fe-doped SiO2 powder.The nano-structure of the deposited films was analyzed by scanning electron microscopy(SEM),transmission electron microscopy(TEM),and Raman spectroscopy.The field electron emission characteristics of the chain-like carbon nanotube films were measured under the vacuum of 10-5 Pa.The low turn-on field of 0.80 V/μm and the emission current density of 8.5 mA/cm2 at the electric field of 3.0 V/μm are obtained.Based on the above results,chain-like carbon nanotube films probably have important applications in cold cathode materials and electrode materials.
A simple process to fabricate chain-like carbon nanotube (CNT) films by microwave plasma-enhanced chemical vapor deposition (MPCVD) was developed successfully. Prior to deposition, the Ti / Al2O3 substrates were ground with Fe-doped SiO2 powder. structure of the deposited films was analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectroscopy. The field electron emission characteristics of the chain-like carbon nanotube films were measured under the vacuum of 10-5 Pa. The low turn-on field of 0.80 V / μm and the emission current density of 8.5 mA / cm2 at the electric field of 3.0 V / μm are obtained. Based on the above results, chain-like carbon nanotube films probably have important applications in cold cathode materials and electrode materials.