Tungsten Carbide Nanorods with Titanium dioxide Composite Counter Electrode: Effect of NMP to Enhanced Efficiency in Dye Sensitized Solar Cell (DSSC)

摘要

Tungsten carbide Nanorods/ Titanium dioxide (WC NRs/TiO_2) composite material was successfully prepared and used as a counter electrode (CE) in DSSC. The N- Methyl pyrrolidone (NMP) played a crucial role in determining the efficiency of a resultant counter eelctrode material. The structural and morphological analysis were confirmed by XRD and FESEM with EDS. The photovoltaic performance was evaluated under the simulated conditions AM 1.5 light intensity (100 mW/cm~2). DSSC fabricated using WC NRs/TiO_2 with NMP showed an efficiency (η) of 4.7%, which is compared with WC NRs/TiO_2 with 2-propanol based DSSC (η=2.9%). The results concluded NMP is the suitable organic binder for counter electrode preparation.