Enhanced photoelectric conversion efficiency of dye sensitized solar cells via the incorporation of one dimensional luminescent BaWO4:Eu3+ nanowires

Abstract

One dimensional hierarchical BaWO₄:Eu³⁺ nanowires have been prepared via a hydrothermal method for the first time. The obtained BaWO₄:Eu³⁺ nanowires are not only a promising down-conversion luminescence material, but also can be used to improve the efficiency of dye sensitized solar cells, resulting an efficiency of 7.66%, which is a noticeable enhancement of 15% compared to the cell without BaWO₄:Eu³⁺ nanowires. We suggest that the enhancement of the efficiencies of the TiO₂–BaWO₄:Eu³⁺ composite cells was mainly related to the light scattering of BaWO₄:Eu³⁺.