Research on the Performance of Magonelli Phase Titanium Dioxide Photoanode in Quantum Dot Sensitized Solar Cells
Utilizing industrially produced black TiO2 with stable yields and performance to fabricate photoanodes for quantum dot sensitized solar cells(QDSSCs),comprehensive comparisons were conducted with commonly used Anatase TiO2 and Rutile TiO2 by performance characterization and theoretical calculations.The results indicate that the introduction of oxygen vacancies leads to a reduction in the conduction band minimum and a narrowing of the bandgap in Magonelli Ti8O15,extending the absorption spectrum from ultraviolet to visible and near-infrared regions,accompanied by a significant enhancement in absorbance.Moreover,its impedance decreases markedly,notably lower than that of Anatase TiO2 and Rutile TiO2.Consequently,QDSSCs assembled with this material exhibit greatly improved performance,particularly in terms of fill factor(FF)and short-circuit current density(Jsc),ultimately achieving an outstanding power conversion efficiency(PCE)of 5.301％.This study contributes to the further understanding of black TiO2 and marks a significant advancement in the industrial application of black TiO2 in assembling solar cells,offering new possibilities for solar cell production.
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