Simulation of the Electrical Characteristics and Photon Absorption Profile of P3HT/PCBM Planar Hetero-junction Photovoltaic Cell

Abstract

In this research work, the performance parameters , such as fill factor (FF), external offquantum efficiency (EQE) , maximum power density and photon absorption profile of a planar hetero-junction poly 3-hexyl thiophene (P3HT) / phenyl-C61-butyric acid methyl ester (PCBM) photovoltaic cell has been simulated for different values of exciton diffusion length and thickness of donor layer where the simulation has been performed under the consideration of incident solar radiation of 1 kW/m2 irradiance , Air mass of 1.5, ambient temperature of 300K and Indium Tin Oxide (ITO) and Aluminium (Al) has been considered as the anode and cathode of the P3HT/PCBM solar cell respectively. The performance parameters and photon absorption profile of the P3HT/PCBM organic solar cell has been simulated for donor and acceptor layer thickness of 50, 60 and 70 nm and exciton diffusion length of 10, 15 and 20 nm . Finally, highest External Quantum Efficiency of 2.41% and Maximum Power Density of 24.10 W/m2 has been obtained for exciton diffusion length of 20 nm and donor thickness of 50 nm .