Abstract
One-dimensional and two-dimensional periodic TiO2 relief structures were incorporated in dye-sensitized solar cells. The periodic TiO2 structures were fabricated using surface relief gratings photoinscribed on azobenzene functionalized polymer films as templates and TiO2 sol-gel solution. Enhancement of power conversion of the solar cells made with the relief TiO2 structures was achieved. This enhancement suggests that the relief TiO2 structures can offer efficient light-trapping with the increased effective optical-path length in the solar cells.
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