The Influence of Thin Layer Copper Phthalocyanine on the Performance of PVK/ Rhodamine B Device

Abstract

In this paper, the influence of copper-phthalocyanine (CuPc) hole-injection layer on the current voltage characteristic and the electroluminescence performance of ITO/CuPc/PVK/ Rhodamine B/Pb devices was investigated. The characteristics were measured at room temperature and without glove box with a thickness variation of CuPc layer. The results showed that the turn-on voltage of the devices can be dramatically lowered by inserting the CuPc layer.