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ICOP & ICPET 2017, 23 - : 781-784 Back to browse issues page
The investigation of the impact of the exciton diffusion length on the quantum efficiency of bilayer organic solar cells
Abstract:   (947 Views)

In this paper we have presented a numerical model to investigate the impact of the diffusion length of excitons and the layer thickness on the quantum efficiency of the organic bilayer solar cells. An organic solar cell composed of p3ht as the donor material and c60 as the acceptor and Al and ITO as the metallic electrodes is considered. Optical simulation is performed using FDTD method in order to obtain the electric field distribution and the absorption profile,then numerical modeling is performed by solving the exciton rate equation to calculate the quantum efficiency. Results shows that, although absorption efficiency increases with increasing thickness, quantum efficiency is decreased because of the limitation imposed by low diffusion length. Increasing the diffusion length of excitons leads more excitons to reach to the interface in their lifetime and consequently more free carriers are generated

Keywords: Organic solar cells, Diffusion length of excitons, Donor and acceptor, active Layer Thickness
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Type of Study: Research | Subject: Special
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The investigation of the impact of the exciton diffusion length on the quantum efficiency of bilayer organic solar cells. ICOP & ICPET. 2017; 23 :781-784
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Volume 23 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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