investigation of dsscs performance: the effect of 1,8-naphthalimide dyes and na-doped tio2

In this paper, we selected three organic dyes based on 1,8-naphthalimide as photosensitizers for dsscs preparation. the organic dyes were sensitized from acenaphthene as the starting material by standard reactions. na-doped tio2 was prepared via one step hydrothermal method for preparation of dye-sensitized solar cells. spectrophotometric measurements of the organic photosensitizers in dmf and on na-doped tio2 substrate were carried out in order to study their maximum absorption wavelength. the maximum absorption wavelength for dyes 1, 2 and 3 in dmf are 427, 434 and 435 nm and on tio2 films are 442, 446 and 446 nm, respectively. finally, the proposed dyes were used as photosensitizer in a dye solar cell structure in the presence of na-doped tio2 and their photovoltaic properties were investigated. the conversion efficiencies for the synthesized dyes 1, 2 and 3 are 1.09%, 1.37% and 1.32%, respectively.