Development of monolithic dye sensitized solar cell fabrication with polymer-based counter electrode

Abstract

Fabrication of monolithic dye sensitized solar cell (DSSC) has been developed by using a poly(3,4 ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) polymer as counter electrode. The number of layers and annealing temperature of PEDOT:PSS layers which is prepared by screen printing technique has been investigated to find the optimum performance of monolithic DSSC. The best performance of monolithic DSSC with 0.61 V open circuit voltage, 1.26 mA short circuits current, and 1.77% efficiency were resulted in 3 layers of PEDOT: PSS with annealing temperature at 120°C. The conductivity of counter electrode layer increase with the increasing of number of polymer layer, produce a high short circuit current. Otherwise, increasing the annealing temperature of PEDOT:PSS layer increases the conductivity of counter electrode layer, but decreases the Isc value.