The photoanode of QDSSCs was fabricated using industrially produced black titanium dioxide with stable yield and performance. Through comprehensive performance characterization and theoretical calculation studies, the photoanode was compared to common Anatase TiO2 and Rutile TiO2. Results indicate that the introduction of oxygen vacancies in Magonelli Ti8O15 leads to a decrease in conduction band bottom, shrinkage of band gap, and extension of absorption spectrum from ultraviolet to visible range.Key words: Titanium dioxide, Quantum dots, Solar cells, Magonelli Ti8O15