Journal of Theoretical and Applied Physics (JTAP) A theoretical calculation of the efficiency of indoline dyes-sensitized contact with ZnO in solar cell Volume 18 (2024) Special Issue-AICIS’23 2024 07 25 A theoretical calculation of the efficiency of indoline dyes-sensitized contact with ZnO in solar cell 10.57647/j.jtap.2024.si-AICIS23.21 EN Firas Adel Shnain College of Education for Pure Science Ibn-ALHaitham, University of Baghdad, Baghdad, Iraq Hadi J. M. Al-Agealy Department of Physics, College of Education for Pure Science -Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq Journal Article 2024 07 25 In this research, the efficiency of the D102-ZnO heterojunction device was evaluated using a quantum model based on electronic transport theory. The electron will move from the excited state D102 indoline-sensitive dye to the wide band gap ZnO. Given the current understanding of the working mechanism of DSSCs, the energy levels of the D102-ZnO heterojunction device must be continuously surrounded by an acetonitrile solvent electrode. The current-voltage (JV) characteristics of D102-ZnO are calculated at T = 300 k and 100 mW/cm2 irradiation. The fill factor increases from 0.230 to 0.246 and the efficiency increases from 4.914 to 9.589 for the D102-ZnO device to increase the concentration from 1.65×1023 1/m3 to 4.65×1023 1/m3.