Abstract

To improve the light harvesting efficiency in dye-sensitized solar cells (DSSC) the light scattering layer is important. In this Letter, we present ball/dumbbell-like structured micrometer-sized ${\mathrm{Sb}}_2{\mathrm{S}}_3$ particles for photon propagation in DSSCs and demonstrate their effective usage in photoelectrodes. The analysis of the photoelectrode by a UV-vis spectrophotometer indicates that the absorption wavelength of an electrode with scattering layer can be obviously promoted from ultraviolet to visible light. The synthesized ${\mathrm{Sb}}_2{\mathrm{S}}_3$ particle structures were also characterized by x-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The photovoltaic performance of the ball/dumbbell-like structured ${\mathrm{Sb}}_2{\mathrm{S}}_3$ based cell exhibits excellent power conversion efficiency.

© 2014 Optical Society of America

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