Patent ID: 8353987

Claim:
A distributor assembly comprising: a first chamber including an interior into which a solid material and carrier gas are introduced; a first heating element associated with the first chamber and providing a temperature high enough that at least a portion of the solid material vaporizes into a vapor; a second chamber for receiving the vapor and the carrier gas from the first chamber and for providing a material flow sufficiently indirect to mix the vapor and the carrier gas into a substantially uniform vapor/carrier gas composition; a third chamber for receiving the vapor and the carrier gas from the second chamber and for providing a material flow sufficiently indirect to maintain the substantially uniform vapor/carrier gas composition including a third chamber inlet located proximate to an outlet of the second chamber; a third chamber outlet for directing the uniform vapor/carrier gas composition for deposition on a substrate, wherein the third chamber outlet is offset from the third chamber inlet such that the flow direction of the vapor/carrier gas must change while flowing from the third chamber inlet to the third chamber outlet; and at least one second heating element outside the third chamber and adjacent to the third chamber outlet.