A method for vaporizing organic components and delivering the vapor through opening(s) in a manifold to a substrate surface spaced from the manifold to form a film composed of at least two organic components, comprising: delivering a first quantity of a single first organic component into a vaporization device where the component is vaporized and delivered at a first predetermined rate to the manifold; delivering into a transport apparatus a quantity of a mixture of organic components in a predetermined ratio that includes the first organic component; the transport apparatus delivering the mixture of organic components at a second predetermined rate to a flash heating region wherein the mixture is vaporized and delivered to the manifold; and mixing the organic components in the manifold, which permits the mixed vaporized components to be deposited through the opening(s) onto the substrate surface to form the film.