Numerical modeling of organic solar cell with heterojunction obtained from new II conjugated oligomers with holes transporter type

The photovoltaic cells based on the organic semiconductors are the subject of research moved by the possibility of carrying out solar cells of great surface, flexible devices, light and cheap, while benefiting from the great processability of organic materials. Faced with the environmental constraints and with the exhaustion of the resources of fossil energy, the strong renewed interest for organic conversion statement is mainly due to the great effectiveness conversion improvement of accomplished organic solar cells these last ten years. In this article we present a simulation of heterojunction organic solar cell containing new conjugated donor derived from oligothiophene with the perylene derivative (D5P). This study uses a method of calculation of the photocurrent delivered by the cell from the equations of continuities and currents by analogy to the phenomena of charges transport according to the model of a heterojunction n/p. The principal photovoltaic parameters of this structure are calculated by the simulation of equation I(V), under illumination AM1. 5. The optimization of donor layer thickness shows clearly that the best results are obtained with the finest structures, the conversion efficiency increases from 0.82% to 1.19%.