Bilayer composite electrodes for diodes
OwnerYang Yanginventor
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Abstract
An ohmic hole injecting electrode or contact for diode structures is disclosed. It is formed of multilayer composite materials and gives superior results in this application. The composite materials include a layer of a high work function inorganic material and a layer of conductive polyaniline ("PANI"). In preferred embodiments, the anode has substantial transparency. These preferred materials can function as transparent electrodes in light-related diodes such as LEDs and photovoltaic cells where they exhibit lower turn on voltages and higher efficiencies.
Claims33
In a diode comprising an ohmic hole-injecting layer electrode in contact with a first side of a layer of an electrically active material and an electron-injecting layer electrode in contact with a second side of said layer of an electrically active material, the improvement comprising employing as said ohmic hole-injecting layer electrode a composite ohmic hole-injecting layer electrode comprising at least one layer of a high work function conductive inorganic material plus at least one layer of conductive polyaniline.
Dependencies are inferred from the claim text.