Preparation of Single-Walled Carbon Nanotube-Organosilicon Hybrids and Their Enhanced Field Emission Properties

摘要

Since single-walled carbon nanotubes(SWNTs)were discovered in 1993,their unique physical and electronic properties have attracted considerable interest.SWNTs have been used as field emission sources of field emission display devices because of their unique structures and prominent stability.It is well-known that adsorption of various gases on SWNTs leads to different field emission characteristics.For example,exposure of SWNTs to oxygen gas increases the turn-on voltage and decreases the field emission current,whereas intercalation of Cs atoms decreases the turn-on voltage by a factor of 2.1-2.8 and increases the field emission current by a factor of 10 to the power of 6.