International Journal of Academic and Applied Research (IJAAR)   Year: 2022 | Volume: 6 | Issue: 6 | Page No.: 78-82 Fabrication of Dye Sensitized Solar Cells (DSSC) from Silicon Dioxide at different Temperatures Download PDF Fawaz Taha Omer, Mubarak DirarAbd Allah, Abdalskhi.S.M.H&Sawsan Ahmed Elhouri Ahmed& E. Elnaiem, M. A Abstract: In this paper, five samples of dye sensitized solar cells were fabricated from silicon dioxide (SiO2) and Rose Bangal dye. silicon dioxide was prepared at at different annealing temperatures (300,350,400,450 and 500)OC using hydrothermal method, Rose Bangal dye was extracted and characterized using UV -VIS spectroscopy. the maximum absorbance of Rose Bangal dye is 0.142 (a.u) at wavelengths 642 nm crosponding photon energy 1.9 eV. The absorption coefficient (?) of Rose Bangal dye is 6.51x102 cm-1 in the visable region and the optical energy gap of Rose Bangal dye is (1.844) eV. The optical energy band gap of silicon dioxide was decreased from (1.976) eV to (1.937 ) eV when the annealing temperature increase from 300OC to 500OC. the I-V curves were measured for all solar cell samples; the current density increases as the optical energy band gap decrease and then increase the efficiency of solar sell. The current density increases from 3.032 (mA.cm-2) to 4.426 (mA.cm-2) and the efficiency increase from 0.3032% to 1.2100%.