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Issue 9, 2019
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Performance of CoTiO3 as an oxide perovskite material for the light scattering layer of dye-sensitized solar cells

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Abstract

Light scattering layers can play an essential role in the transport characteristics of charge carriers and the photovoltaic performance of dye-sensitized solar cells (DSSCs). Perovskite oxide materials have recently attracted considerable attention as light scattering materials due to their optical and structural properties. Herein, we synthesized TiO2–CoTiO3 composites with a facile room temperature sol–gel procedure for use as a light scattering layer in the photoanode of DSSC devices. TiO2–CoTiO3 composites were applied as monolayer photoanodes and bilayered films on a nano-TiO2 photoactive layer. Microstructural investigations of the composite photoanodes showed a bimodal texture consisting of CoTiO3 coarse and TiO2 fine particles. CoTiO3 containing photoanodes exhibited a higher light scattering property and lower dye adsorption amount compared to the control pristine TiO2 electrode. Photovoltaic metrics of fabricated DSSC devices with different contents of CoTiO3 in mono- and bilayered configurations were recorded under simulated AM 1.5 sunlight, suggesting that the photovoltaic performance of the devices improved in the presence of the TiO2–CoTiO3 scattering layer. Interestingly, no considerable difference in photovoltaic operation of CoTiO3 in the mono- and bilayered configurations was achieved (i.e., photoconversion efficiency (PCE) of 7.46% and 7.67% for mono- and bilayered devices, respectively). However, their PCEs are about 80% higher than that of the control device without the light scattering layer.

Graphical abstract: Performance of CoTiO3 as an oxide perovskite material for the light scattering layer of dye-sensitized solar cells

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Publication details

The article was received on 23 Jan 2019, accepted on 01 Feb 2019 and first published on 01 Feb 2019


Article type: Paper
DOI: 10.1039/C9NJ00414A
Citation: New J. Chem., 2019,43, 3760-3768

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    Performance of CoTiO3 as an oxide perovskite material for the light scattering layer of dye-sensitized solar cells

    S. Aynehband, E. Nouri, M. R. Mohammadi and Y. Li, New J. Chem., 2019, 43, 3760
    DOI: 10.1039/C9NJ00414A

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