Fabrication of Nanosticks-Like CdS Sensitizer for the Application of Solar Cells
The novelty of this work is to fabricate the Nanosticks (NSs) like CdS sensitizer on the surface of TiO2 electrode by chemical bath deposition (CBD) method with a very high vacuum annealed at 350 °C for 30 min. Whereas, nanocrystalline TiO2 electrodes have been prepared on FTO (SnO2: F) glass by a spin-coating method with high purity (99.99%, Degussa P25) TiO2 powder. The surface of the CdS layer has been covered by NSs like structures which are confirmed by the scanning electron microscope image. The 100 nm of platinum-coated FTO substrate and polysulfide-based electrolyte are used to assemble the Grätzel Solar cell (GSC). The performance of solar cell (SC) based on NSs like CdS has been compared with the nanoparticles (NPs) based CdS sensitized SC, where CdS NPs has synthesized by CBD without any post-annealing. The efficiency of NSs like CdS sensitized SC exhibits 2.44%, which is 2 folds of the efficiency of the CdS NPs sensitized SC. The NSs like CdS sensitized SC shows the highest photocurrent 20.24 mA/cm2 compared to CdS NPs based SC.
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Document Type: Research Article
Affiliations: Department of Electrical & Electronic Engineering, Rajshahi University of Engineering & Technology, Rajshahi-6204, Bangladesh
Publication date: May 1, 2020
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