NOVELTY - The evaporator comprises a thin-walled metallic evaporating container (3) with a discharge opening (5) for evaporated organic materials, a heat source for heating the organic materials, sensor means for supervising temperature equipped in the area of the evaporating container and connected with a temperature control unit, and a housing (2) coolable by a fluid. The heat source is a double tube quartz radiator (6) heating the evaporating container through heat radiation and arranged outside of the evaporating container.    USE - Evaporator for evaporating organic materials in vacuum useful for the production of large-scale coating during the production of organic light diodes or organic solar cells and/or electronics (claimed).    ADVANTAGE - The evaporator can be simply manufactured with good scalability and stability and ensures efficient evaporation of organic materials.    DETAILED DESCRIPTION - The evaporator comprises a thin-walled metallic evaporating container (3) with a discharge opening (5) for evaporated organic materials, a heat source for heating the organic materials, sensor means for supervising temperature equipped in the area of the evaporating container and connected with a temperature control unit, and a housing (2) coolable by a fluid. The heat source is a double tube quartz radiator (6) heating the evaporating container through heat radiation and arranged outside of the evaporating container. The evaporating container and/or the discharge opening comprise linear stretches. The discharge opening is formed as throttle. The evaporating container is formed as metallic tube. The arrangement of the radiators is realized to a homogeneous heating of the evaporating container. The discharge opening is arranged as funnel-shaped discharge channels (7) through which the evaporated organic materials are flowed directly on a substrate to be coated moved relative to the discharge channel. A wall of the discharge channel is heated at a temperature that lies slightly over an evaporation temperature of the organic material. Sensor means for supervising the temperature are equipped in the area of the evaporating container and are connected with a temperature control unit. An INDEPENDENT CLAIM is included for a coating plant for in-line coating.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of an evaporator for evaporating organic materials.    Housing (2)    Evaporating container (3)    Discharge opening (5)    Radiator (6)    Discharge channel. (7)