Light harvesting enhancement for Ti-based dye-sensitized solar cells by introducing a grooved texture underlayer

Abstract

A thin TiO₂ underlayer with a grooved structure is prepared using a simple and efficient approach. This underlayer with a grooved texture decreases the charge transfer resistance at the Ti metal/TiO₂ interface, suppresses electron leakage, and significantly improves the light harvesting ability of the solar cell device.