Energy transfer in organic multilayer quantum well structure and its application to OLEDs

Abstract

We fabricate a series of samples and OLEDs with organic multilayer quantum well structure, which consist of alternate PBD and Alq₃. Both PBD and Alq₃ are electron-transporting materials, and PBD is used as potential barrier layer, while Alq₃ is used as potential well layer and emitting layer. Compared with double-layer structure, the luminescent characteristics of organic samples and diodes with quantum well structure are investigated and the quantum well structure helps the energy transfer between well layer and barrier layer. The quantum well structure makes carriers disperse in the different well layers and then increases the number of excitons to enhance the efficiency of the recombination.

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