Abstract
Mesoporous TiO2 microspheres with large surface area are synthesized by a hydrothermal reaction of titanium glycolate, and then introduced into CdS quantum dot-sensitized solar cell (QDSC). These mesoporous TiO2 microspheres can not only increase the adsorption amount of quantum dots (QDs), but also possess effective light scattering ability due to the proper size, in comparison with traditional TiO2 (P25). An overall power conversion efficiency of 2.63% is achieved by using these mesoporous TiO2 microspheres as electrode in QDSC, significantly higher than that derived from P25 TiO2 electrode. In addition, the photovoltaic behaviors of the materials are studied by surface photovoltage measurement to explain the excellent performance of QDSCs.
Published Version
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