Bilayer composite electrodes for diodes

US5723873A · kind A · utility

Inventor

• Yang Yang · Beijing, CN

Key dates

• Filing date: Mar 3, 1994
• Grant date: Mar 3, 1998
• Expiry date: Mar 3, 2014

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K50/816

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.