Improvement of Photovoltaic Performance of Dye Sensitized Solar Cells by Pre-Dye Treating of Zno Nanoparticles
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Date
2021-01
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Publisher
University of North Bengal
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Abstract
Dye sensitized solar cells (DSSC) were fabricated using Rose Bengal dye. Pure and pre-dye
treated Zinc oxide (ZnO) nanoparticles were used to fabricate the photoanodes of two cells.
The structural characteristics of ZnO nanoparticles were studied using X-ray diffraction
analysis and the surface morphology by Scanning electron microscopy. The absorption property
of the dye was studied using UV-VIS spectra. The pre-dye treatment has improved the
properties of ZnO, such as reduced agglomeration, improved morphology, increased dye
adsorption and reduced dye aggregation. Photovoltaic parameters like short circuit current
density (JSC), open circuit voltage (VOC), fill factor (FF) and overall energy conversion efficiencies
(η) for the conventional and pre-dye treated ZnO based fabricated cells were calculated
to be 3.73 mA/cm2, 0.53 V, 0.63 and 1.26 % and 4.47 mA/cm2, 0.55 V, 0.62 and respectively.
The pre-dye treated DSSC showed an improvement in short circuit current density
(Jsc) by 19.84% and efficiency (η) by 21.43 %.