NOVELTY - Composite polymer film is made of mixture of liquid monomer and insoluble particles (conjugated or non-conjugated).    USE - Composite polymer layers are used in various electronic devices, including molecularly doped polymers, light emitting polymers and light-emitting electrochemical cells.    ADVANTAGE - The use of conjugated particles preserves conjugation within the polymer material. If the flash evaporation is additionally combined with plasma deposition, then both the conjugated particles and the monomer may be conjugated. The process is less susceptible to pin holes than physical vapor deposition processes.    DETAILED DESCRIPTION - Composite polymer layer comprises:    (a) mixing liquid monomer with particles insoluble in it, to form a monomer particle mixture;    (b) flash evaporating obtained monomer particle mixture in vacuum environment, forming a composite vapor; and    (c) continuously cryo-condensing the composite vapor on cool substrate, and crosslinking of cryo-condensed monomer layer to form composite polymer layer.    Flash evaporating comprises:    (1) supplying continuous stream of obtained mixture to vacuum environment at a temperature below decomposition and polymerization temperature of monomer particle mixture;    (2) continuously atomizing the monomer particle mixture, creating continuous flow of droplets; and    (3) continuously vaporizing the droplets by contacting them with a heated surface having temperature equal or above a boiling point of the liquid monomer and of the particles, but below pyrolysis temperature, forming a composite vapor. Additional gas, in form of ballast gas or reaction gas, can be added to the composite vapor upstream of its outlet from the flash evaporator.    DESCRIPTION OF DRAWING(S) - The drawing shows cross section of the apparatus combining flash evaporation and glow discharge plasma deposition.    flash evaporator (106)    housing (116)    monomer inlet (118)    atomizing nozzle (120)    droplets (122)    heated surface (124)    baffles (126)    composite vapor outlet (128)    cryo-condensation surface (102)    glow discharge electrode (204)    glow discharge housing (200)    composite vapor inlet (202)    substrate (104)    additional gases inlet (130)