Scaling of the flexible dye sensitized solar cell module

Dye sensitized solar cell (DSSC) has attracted tremendous attention over last two decades and is currently regarded as a promising alternative to the conventional flexible photovoltaic (PV) market. Thin, light-weight and flexible DSSC module enables deployment on curved surfaces which significantly widens the application space. The critical challenge in advancing flexible DSSC technology remains in the up-scaling of module dimensions. Herein, we report advancement achieved in developing large-scale flexible DSSC modules of the dimensions 100 mm×100 mm with conversion efficiency of 3.27%. A facile binder-free TiO₂ paste was synthesized to fabricate firm TiO₂ photoanode on plastic substrate at low temperature. Cold isostatic press (CIP) technique was utilized to not only improve the quality of film but also to increase the thickness of TiO₂ film. Based on binder-free TiO₂ paste, flexible DSSC module with dimension of 100 mm×100 mm was fabricated and demonstrated for mobile phone charging application under indoor light condition.