Patent ID: 6406801
Filing Date: 2002-06-18
Classification: H01L,Y10S,Y10T

Abstract:
An organic electroluminescent element having a minute optical resonator for amplifying a specific wavelength in a luminescence light comprising:a substrate; a multilayered film mirror formed between the substrate and said transparent electrode, each film having a different refractive index; a transparent electrode as an anode on the multilayered film mirror; an organic layer on the transparent electrode; and a metallic electrode mirror as a cathode on the organic layer, said organic layer comprising a luminescent layer for emitting a light by injecting holes and electrons through the transparent electrode and the metallic electrode mirror, said multilayered film mirror and said metallic electrode mirror constituting a minute optical resonator for amplifying a specific wavelength in the light, wherein the minute optical resonator has an optical length twice as long as a target amplified wavelength, the organic layer is not less than 100 nm thick, and the transparent electrode is not less than 50 nm thick, or is of not more than 30 &OHgr; in sheet resistance; the luminescent material of said luminescent layer has an emission spectrum with no luminescence component in a wavelength region of low order luminescence peak other than said target amplified wavelength; and the target amplified wavelength is in a range of about 30 nm toward a shorter wavelength side from a luminescence peak wavelength of the luminescent layer to a luminescence peak wavelength of the luminescent layer.