Effect of Magnetic Field Intensity on Dye Solar Cells

Abstract

In this work, we investigated the effect of magnetic field Intensity on Dye Solar Cells that made from 15 samples in three groups by three different dyes (Rhodamine B, Coumarin 500 and Eriochrome black T) when effect by magnetic field (0, 1, 2, 3 and 4) mT. The cells were fabricated from ITO which act as a cathode beside MEH PPV, (Rohadamin B, Coumarin 500 and Eriochrome black T) dye and anodes is (Ag). It was found that the efficiency of the solar cell increases with magnetic field increases by rated 1.5x10-4 %, 6.6x10-4 % and 7.4x10-7 % .mT-1 respectively, for Rhodamine B, Coumarin 500 and Eriochrome black T. Other effects on dye solar cells by magnetic field in the densities current, that increase of magnetic field increases densities current increase by conduction rated 7.8x10-4, 4.48x10-7 and 2.4x10-3 mA.cm-2 .mT-1, respectively for Rhodamine B, Coumarin 500 and Eriochrome black T. Otherwise detailed effect of energy band gaps on dye -sensitized solar cells (DSSCs) efficiency increase of energy band gaps decreases the efficiency of solar cell. This is since the energy band gaps increase enables electrons having lower excitation energy to become free electron in a conduction band thus decreasing the electric solar efficiency by rated 3% with 1 eV.