The development of program for calculating the band gap energy of semiconductor material based on UV-Vis spectrum using delphi 7.0

Abstract The optical properties of semiconductor material are the important information for its application in solar cell. One parameter which influence is band gap energy. value energy can be obtained from experimental data UV-Vis absorbance spectrum by doing three steps, i.e. curve smoothing, baseline arrangement and calculation using Tauc plot method embedded Origin software. Conventionally, these processes done sequentially. In this research, we developed program calculating differ one usually used. all simultaneously. For input data, used ZnO, TiO2 sensitized-Dye Dye-N719 materials. calculated our 3.19 eV, 2.14 eV 1.73 TiO 2 +Dye N719and materials, respectively. These results almost same to conventional 3.20 2.10 based Dye-sensitized 1.60 Dye-N719. We also found that more easily, user friendly efficient compared method.