A field emission electron source (10) includes a conductive base (12), a
carbon nanotube (14), and a film of metal (16). The conductive base
includes a top (122). One end (142) of the carbon nanotube is
electrically connected with the top of the conductive base. The other end
(144) of the carbon nanotube extends outwardly away from the top of the
conductive base. The film of metal is formed on the nearly entire surface
of the carbon nanotube and at least on the portion of the top of the
conductive base proximate the carbon nanotube. A method for manufacturing
the described field emission electron source is also provided.