Field emission from carbon nanotubes on partially field porous Al_2O_3 templates

摘要

Carbon nanotubes (CNT) are promising for applications as cold cathodes in light sources or flat planel displays because of their simple fabrication and strong electron field emission (FE) at electric fields below 10 V/μm due to their high geometric field enhancement. Free standing CNT's, however, often provide non-uniform current distributions and limited current stability due to mutual shielding, residual pressure and heating effects.