Modeling, Numerical Simulation and Performance Optimization of P3HT:PC70BM Based Bulk Hetero Junction Organic Solar Cells

Abstract

In this paper we had presented the modeling and simulation of organic solar cell based on P3HT:PC70BM using TCAD tool Silvaco ATLAS™ using Aluminum and Silver as cathodes. The Poole-Frenkel model was used to estimate the organic solar cell characteristics in combination with Langevin recombination model. The main challenges faced during the modeling were the repetitive iteration which was needed to obtain a numerical solution for the figure of merits. The optimized thickness shows the considerable change in efficiency, fill factor and open-circuit voltage. The efficiency obtained is 8.14% with short circuit current density of 20.17 mA/cm2, open circuit voltage as 707.97 mV approximately and fill factor is 55.47% which is higher than the reported works in literature.