Bilayer composite electrodes for diodes
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United States of America Patent
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Mar 3, 1998
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N/A
app pub date -
Mar 3, 1994
filing date -
Mar 3, 1994
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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.
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