Light Scattering Amplification on Dye Sensitized Solar Cells Assembled by Hollyhock-shaped CdS-TiO2 Composites
- Light Scattering Amplification on Dye Sensitized Solar Cells Assembled by Hollyhock-shaped CdS-TiO2 Composites
- 강미숙; 이가영; 이후률; 엄명헌[엄명헌]
- SOLVOTHERMAL SYNTHESIS; CDS
- Issue Date
- KOREAN CHEMICAL SOC
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.33, no.9, pp.3043 - 3047
- To investigate the scattering layer effect of a TiO2 multilayer in dye-sensitized solar cells (DSSCs), we designed a new DSSC system, assembled with a CdS-TiO2 scattering layer electrode. A high-magnification SEM image exhibited hollyhock-like particles with a width of 1.5-2.0 mu m that were aggregated into 10-nm clumps in a hexagonal petal shape. The efficiency was higher in the DSSC assembled with a CdS-TiO2 scattering layer than in the DSSC assembled with TiO2-only layers, due to the decreased resistance in electrochemical impedance spectroscopy (EIS). The short-circuit current density (J(sc)) was increased by approximately 7.26% and the open-circuit voltage (V-oc) by 2.44% over the 1.0 wt % CdS-TiO2 composite scattering layer and the incident photon-to-current conversion efficiency (IPCE) in the maximum peak was also enhanced by about 5.0%, compared to the DSSC assembled without the CdS-TiO2 scattering layer.
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