Observation of Significant enhancement in the efficiency of a DSSC by InN nanoparticles over TiO2-nanoparticle films

► InN nanoparticles deposited on 5-8.5 μm TiO2 nanoparticle films enhance the quantum efficiency of DSSC using N3 with 10-20%. ► A 3μm thick InN/TiO2 solar cells have only 0.2-0.4% efficiencies under one sun to 9mW/cm2 incident light. ► The result of a model calculation showed that the N3 dye can adsorb strongly on both TiO2 and InN surfaces.