A Theoretical Study of The Influence of Donor Sensitize Dye on Performance of Dye-sensitized Solar Sells DSSCs

Abstract

    In this paper, a theoretical study was introduced to discussion the  Influence of donor senstizer on efficiency of solar cell with clear  focusing on dye senstized solar cell DSSCs applications was presented. Use of donor  as -sensitizer dye in solar cells was a viable contender in photovoltaics due to their spectrum of excited state to transfer more elkectrons to conduction band of semiconductor  .In this study, two systems Alq3/ZnO and D149/ZnO devices taken with same two solvents .Transtion energy ,coupling strength and transtion parameters are used to calculate the  electron current density , it  uses to calculate the photovoltic characteristic I-V ,fill factor and the efficiency of the solar cell. Especially, the largest performance was for the both D149/ ZnO   and Alq3/ZnO  solar cells based on Acetonitrile as a solvent with electron current density of (430           0.329-13.8) mA/cm^2 between (1-6) V and produced the highest efficiency calculated 2.593 and 0.938for the both solar cell was  corresponds to the lowest efficiency about 0.536 for  Alq3/ZnO with Ethanol solvent