Abstract
In this study, tetrafluoro-tetracyano-quinodimethane (F4-TCNQ)-doped poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) was spin-coated on a pre-patterned ITO glass and used as hole conducting layer materials in organic photovoltaic cells. The multi-layered ITO/F4-TCNQ-PEDOT:PSS/CuPc/CuPc:C60/C60/BCP/Al organic photovoltaic cells were fabricated to evaluate the J − V characteristics such as short circuit current (Jsc), open circuit voltage (Voc), fill factor (FF) and energy conversion efficiency (ηe) of the device. A higher power conversion efficiency obtained from the device with a concentration of 0.1 wt% F4-TCNQ in the PEDOT:PSS layer was achieved compared to those adopted from device without F4-TCNQ doping in the PEDOT:PSS layer, and current density-voltage characteristics was also improved well with incorporation of F4-TCNQ in PEDOT:PSS films.
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