White light source using carbon nanotubes and fabrication method thereof

摘要

A white light source using carbon nanotubes and a fabrication method thereof are provided. The white light source includes a metal film (200) which is formed on a lower substrate (100) and used as a cathode, a catalytic metal film (300) formed on the metal film, carbon nanotubes (400) which are vertically aligned on the catalytic metal film for emission of electrons in an applied electric field, spacers (500) mounted on the catalytic metal film, and a transparent upper substrate (600) which has a transparent electrode (700) for an anode and a fluorescent body (800) on the transparent electrode, and which is mounted on the spacers such that the fluorescent body faces the carbon nanotubes. The catalytic metal film is composed of isolated nano-sized catalytic metal particles. The carbon nanotubes are grown from each of the catalytic metal particles to be vertically aligned on the substrate by chemical vapor deposition.