We demonstrated a planar heterojunction organic photovoltaic (PHJ-OPV) device with open-circuit-voltage (Voc) of 1.03 V, utilizing bis(4-(N-(1-naphthyl)phenylamino) phenyl)fumaronitrile (NPAFN) as the donor material in combination with the conventional fullerene (C-60) as the acceptor. Compared with conventional copper phthalocyanine (CuPC)/C-60 PHJ-OPV, Voc increased 100%. Although the short-circuit-current was slightly reduced from 4.85 to 3.65 mA/cm(2), due to the lower absorption depth of NPAFN, the overall power conversion efficiency of our NPAFN-based OPV device was 1.97%, much higher than that of a typical CuPC-based device (1.31%). Besides, under forward bias (1.5V), red emission was observed from this PHJ-OPV, arising from the recombination from the non-doped red emitter, NPAFN. (C) 2011 The Electrochemical Society. [DOI: 10.1149/2.071202jes] All rights reserved.