Photoluminescence Quenching under Reverse Bias in Organic Multilayer Structure Utilizing 8-Hydroxyquinoline Aluminum and Aromatic Diamine

Abstract
Photoluminescence intensity from an organic multilayer structure utilizing 8-hydroxyquinoline aluminum ( Alq3) and aromatic diamine (TPD) has been modulated by applying reverse bias voltage. Photoluminescence intensity decreases with increasing reverse bias voltage. The decrease of photoluminescence intensity is enhanced in the thinner multilayer structure compared with the thicker multilayer. The mechanism of photoluminescence quenching in the organic multilayer structure has been discussed.