23. Investigation of Electron Transporting Materials for Semi Transparent Organic Photovoltaics with Highly Oriented Polymer Materials

Abstract

In order to improve the light utilization efficiency (LUE), which is one of the evaluation indices of semitransparent organic photovoltaics (ST-OPV), ST-OPV must improve the conversion efficiency (PCE) while maintaining high light transmittance. The objective of this study was to improve the short-circuit current of inverse-structured ST-OPVs using highly oriented polymeric materials. In this experiment, we investigated the use of phenanthroline derivatives, which have already been proven as materials for the electron injection layer in reverse-structured OLEDs, for the electron transport layer of ST-OPVs. As a result, we report our findings that PCE can be improved by applying phenanthroline derivatives to the electron transport layer of inversestructured ST-OPVs.