A novel donor-acceptor-acceptor molecular for planar mix heterojunction C60 based organic solar cells

Abstract

We have demonstrated a small molecule organic solar cell with a novel electron donor material based on donor-acceptor-acceptor (D-A-A) backbone. In such a device, 2.32%, 0.92 V, and 4.80 mA/cm2 in power conversion efficiency, open circuit voltage, and short circuit current density, respectively, was achieved with planar mix bulk heterojunction structure combined with C60 as the electron acceptor.