Organic electroluminescent device, group of organic electroluminescent devices

A group of organic electroluminescent devices, each organic electroluminescent device comprising:

• at least one luminescent layer, constituted from an organic compound, provided between a cathode electrode and an anode electrode opposed to the cathode electrode;
• and
• an organic compound layer doped with a metal capable of acting as an electron-donating dopant, said organic compound layer being disposed as a metal doping layer in an interfacial surface with said cathode electrode;
• wherein
• a layer thickness of said metal doping layer is controlled in each organic electroluminescent device so that light emitted from said each organic electroluminescent device has different emission spectrums.

An organic electroluminescent device comprising:

• at least one luminescent layer, constituted from an organic compound, provided between a cathode electrode and an anode electrode opposed to said cathode electrode;
• and
• an organic compound layer doped with an electron-accepting compound, having properties of a Lewis acid, disposed as a chemical doping layer in an interfacial surface with said anode electrode on the luminescent layer side;
• wherein
• an emission spectrum of light emitted from said organic electroluminescent device depends on a layer thickness of said chemical doping layer.

A group of organic electroluminescent devices, each organic electroluminescent device comprising:

• at least one luminescent layer, constituted from an organic compound, provided between a cathode electrode and an anode electrode opposed to said cathode electrode;
• wherein
• said organic electroluminescent devices each comprises an organic compound layer, as a chemical doping layer, doped with an electron-accepting compound having properties of a Lewis acid, said organic compound layer being disposed in an interfacial surface with said anode electrode on the luminescent layer side of said organic electroluminescent device;
• and wherein
• in said each organic electroluminescent device, light emitted from said organic electroluminescent device has different emission spectrum in accordance with a layer thickness of said metal doping layer.