Organic light emitters with improved carrier injection

摘要

A light emitting device with improved carrier injection. The device has a layer of organic light emitting material and a layer of organic semiconductor material that are interposed between first and second contact layers. A carrier transport layer,may optionally be included between the semiconductor and light emitting layers. When used as a diode, the first and second contacts are functionally the anode and cathode. The device can also be a field effect transistor device by adding a gate contact and a gate dielectric. The first and second contacts then additionally have the function of source and drain, depending on whether the organic semiconductor material is a p-type or an n-type. Preferably, the organic semiconductor is formed with pentacene.