The document summarizes a study on dye sensitized solar cells that use 2-naphthaldehyde dye as the sensitizer. Key points: 1) ZnO nanostructured electrodes were prepared using a hydrothermal method and used as the photoanode. 2-naphthaldehyde dye was synthesized and characterized. Dye sensitized solar cells were assembled using the dye and iodide/triiodide electrolyte solution. 2) The efficiency of cells using the synthesized 2-naphthaldehyde dye and its polymer derivative were tested and compared to using 2-naphthol as the starting material. The polymer dye showed the highest efficiency of 0.266%. 3) Characterization of