Liu, S. W.S. W.LiuLin, C. F.C. F.LinLee, C. C.C. C.LeeSu, W. C.W. C.SuChen, C. T.C. T.ChenLee, J. H.J. H.LeeJIUN-HAW LEE2018-09-102018-09-102012http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000298637500091&KeyUID=WOS:000298637500091http://scholars.lib.ntu.edu.tw/handle/123456789/372434We 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 mAcm 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. © 2011 The Electrochemical Society.[SDGs]SDG7Copper phthalocyanine; Forward bias; Non-doped; Organic photovoltaics; Overall power conversion efficiency; Red electroluminescence; Red emissions; Red emitter; Conversion efficiency; Heterojunctions; Naphthalene; Open circuit voltage; Photovoltaic effectsjournal article10.1149/2.071202jes