High Open-Circuit Voltage Planar Heterojunction Organic Photovoltaics Exhibiting Red Electroluminescence
Journal
Journal of the Electrochemical Society
Journal Volume
159
Journal Issue
2
Pages
H191-H194
Date Issued
2012
Author(s)
Abstract
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 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
Other Subjects
Copper 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 effects
Type
journal article