Patent ID: 6224948
Filing Date: 2001-05-01
Classification: B05D,C23C

Abstract:
A method for plasma enhanced chemical vapor deposition of low vapor pressure monomeric materials onto a substrate in a vacuum environment, comprising the steps of:(a) making an evaporate by receiving a plurality of monomer particles of the low vapor pressure monomeric materials as a spray into a flash evaporation housing, evaporating said spray on an evaporation surface, and discharging an evaporate through an evaporation outlet;(b) making a monomer plasma from said evaporate by passing said evaporate proximate a glow discharge electrode and creating a glow discharge for making said plasma from the evaporate; and(c) cryocondensing said monomer plasma on said substrate,wherein said glow discharge electrode is positioned within a glow discharge housing having an evaporate inlet proximate the evaporate outlet, said glow discharge housing and said glow discharge electrode maintained at a temperature above a dew point of said evaporate and said substrate is downstream of said monomer plasma, is substantially not electrically biased with an impressed voltage, and receives the monomer plasma cryocondensing thereon.