DUAL FUNCTION CONDUCTING POLYMER DIODES

摘要

Dual function diodes based on conjugated organic polymer active layers are disclosed. The device comprises a conductive metal contact (13), preferably fabricated of low work function metal on one side of a semiconductive conjugated polymer film (11). A third layer, electrode (12) is on the other side of the polymer film. This electrode is commonly transparent so that light (19) can pass to and from the active layer (11). These three layers can make up the device but more commonly a transparent substrate (14) is present adjacent to electrode (12). When positively biased the diodes function as light emitters. When negatively biased they are highly efficient photodiodes. Methods of preparation and uses of these diodes in displays and input/output devices are also disclosed.