Polymer bulk heterojunction solar cells: function and utility of inserting a hole transport and electron blocking layer into the device structure

Abstract

The function and utility of inserting an in situ polymerizable triphenylamine-containing polyperfluorocyclobutane (TPA–PFCB) as a hole transport and electron blocking layer into the structure of bulk heterojunction (BHJ) solar cells were demonstrated. The open-circuit voltage (V_oc) and short-circuit current (J_sc) increase, leading to BHJ solar cells with improved power conversion efficiency.