Solvothermally synthesized anatase TiO2 nanoparticles for photoanodes in dye-sensitized solar cells

Many researchers working on the development of dye-sensitized solar cells (DSCs) continue to focus synthesis photoanode materials with high surface area, along light scattering ability enhance harvesting efficiency (LHE). Meanwhile, dye packing density, which also impacts LHE significantly, is often overlooked. Solvothermally synthesized anatase TiO2 nanoparticles (SANP) were obtained by a new and simple approach using mixed solvent, ethanol acetic acid. SANP applied in photoanodes DSCs either metal-free organic (D149) or organometallic (N719) dyes. Dye loading (packing density) was correlated isoelectric point (IEP) addition effects shown determine devices photovoltaic (PCE); specifically when compared ones employing commercially available nanoparticles. sensitized D149 found be optimised at 10 µm, yielding PCE 6.9%, superior for transparent + films from commercial source (5.6% 5.9%, respectively). Furthermore, 7.7% achieved N719 dye, 7.2% seen 7.9% layer. The PCEs are attributed capability scattering. A further interest that even increased reactivity towards adsorption, we did not observe any significant increase recombination redox mediator, presumably due providing better shielding.