A high light transmittance, low surface resistivity of the transparent cathode to provide an abnormality occurs hardly organic electroluminescent element such as a light emitting unevenness even when exposed to high temperature. The organic electroluminescent device 1 according to the present invention includes the light transmissive support substrate 2, a transparent anode 3, the organic light emitting unit 4, a transparent cathode 5, the material of the transparent cathode 5, and ytterbium, ytterbium alloy containing a metal other than ytterbium, metals other than the ytterbium has a specific resistance at 20 ° C. or more either one metal or two selected from a metal or less 100μΩ · cm are mixed an alloy, the concentration of the ytterbium of the ytterbium alloy is 5 to 20 vol%, the support substrate 2, the transparent anode 3, and the organic light emitting unit 4 and the transparent cathode 5, a transparent substrate 6, and brought into close contact with an adhesive layer 7. .FIELD 1