Dye-sensitized Solar Cell (DSSC) dengan lima variasi ketebalan yaitu 10 μm, 20 μm, 30 μm, 40 μm, dan 50 μm dengan menggunakan gel elektrolit dan ekstrak klorofil daun Alfalfa sebagai sensitizer telah berhasil dibuat. TiO2 nanopartikel berfase anatas dengan ukuran 13 nm yang digunakan pada penelitian ini disintesis menggunakan metode kopresipitasi. Efisiensi ketebalan 10 μm berturut-turut sebesar 0,114%.

The third generation of solar cells found by Gratzel in 1991 was called Dye-sensitized Solar Sell (DSSC). DSSC is composed of five parts, namely transparent conductive glass as a substrat; titanium dioxide as a semiconductor materials; chlorophyll as a dye sensitizer, carbon as a catalyst which can convert energy of light into electrical energy. Characterization of DSSC will be carried out in this research covering electrical characterization using RLC meter & I-V meter, optical characterization using Spectrophotometer. TiO2 nanoparticle in in anatase phase having size of 13 nm used in this experiment was synthesized by co-precipitation method. Photoanode with thickness of 10 μm has the lowest resistance compared to the other thickness of 30 μm and 50 μm. The device applying photoanode of 10 μm shows the highest efficiency up to 0.1141 %, while those with other thicknesses respectively gives 0.0378%, and 0,0283%, revealing the efficiency becomes lower with the increasing thickness of TiO2.