High device yield carbon nanotube NFETs for high-performance logic applications

We present the first analysis of device yield and material composition for several low work-function metal contacts to carbon nanotubes (CNT), including the first demonstration of high-performance n-channel field-effect transistors (NFET) from erbium (Er) and lanthanum (La). Our results indicate drastic improvement in NFET yield by appropriate metal selection and optimization of deposition conditions. © 2011 IEEE.