Abstract
Surface treatment of dye-sensitized solid-state solar cells (DSSSCs) by an atmospheric-pressure plasma jet was carried out to improve the characteristics of DSSSCs using Ar/O2 as a process gas. This is a dry process and a low energy consumption method for the surface modification of DSSSCs owing to the easy generation of plasma at atmospheric pressure. Active species and radicals were generated by the atmospheric-pressure plasma jet to modify the TiO2 surface in the DSSSCs. The important parameters of DSSSCs, such as the short circuit photocurrent density (JSC) and the open circuit photovoltage (VOC), were measured using the solar cell evaluation system. The surface condition of DSSSCs was analyzed by X-ray photoelectron spectroscopy (XPS), ultraviolet visible absorption spectroscopy (UV-VIS), and scanning electron microscopy (SEM). As a result, the solar conversion efficiency of DSSSCs increased to 1.96% from 1.60% after 15 min of dry plasma treatment.
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