Enhanced photoelectric performance of TiO2 nanotubes sensitized with carbon dots derived from bagasse
Carbon quantum dots (CQDs) with tuneable bandgap were prepared via a hydrothermal method using bagasse derived from industrial waste as carbon source. The CQDs exhibit a visible range absorption with excitation-dependent fluorescence emission. Using a liquid electrolyte, the photovoltaic conversion efficiency of prepared the CQDs/TiO2 nanotubes (TNTAs) reached 1.44% with a sensitization time of 6.0 h and sensitization temperature of 100 °C, which was 13.09 times that of TNTAs. This study demonstrates the fabrication of low-cost and efficient quantum dots sensitized solar cells with a liquid electrolyte using CQDs from bagasse.