IMPROVED DEPOSITION TECHNIQUE FOR DEPOSITING A COATING ON A DEVICE

摘要

The present invention describes a deposition method suitable for depositing a coating on a device. The method is particularly suited for depositing a self assembled monolayer (SAM) coating on a micro electro-mechanical structures (MEMS). The method employs carrier gases in order to form a deposition vapour in a process chamber within which the device is located wherein the deposition vapour comprises controlled amounts of a vapour precursor material and a vapour reactant material. Employing the described technique avoids the problematic effects of particulate contamination of the device even when the volumetric ratio of the reactant material to the precursor material is significantly higher than those ratios previously employed in the art. The vapour precursor material can be of a type that provides the MEMS with an anti-stiction coating with the associated vapour reactant material comprising water.