The aim of this review article is to give a short and simple information about photovoltaic performance and structure of the some phenothiazine (PTZ) dyes used in dye-sensitized solar cells (DSSC). The dye chromophore is a heart component in the DSSC device to improve the conversion efficiency to electric energy of the solar cells. It describes the some electrochemical, spectral properties and structure of the phenothiazine dyes used in dye based-solar cells.