To achieve a highly efficient organic solar cell (OPVs), control of molecular orientation is one of prime important factors, for interfacial dipole orientation and energy offset at donor/acceptor (D/A) interface...
A highly efficient PEN/ITO/ZnO/CH3NH3PbI3 perovskite/PTAA/Au flexible planar solar cell with 1.1 V Voc, 18.7 mA cm−2Jsc, 75% FF, and 15.4% η for the forward scan direction and 1.1 V Voc, 18.7 mA cm−2Jsc, 76% FF and 15.6% η for the reverse scan direction under illumination of 1 Sun was demonstrated.