Facile hydrothermal synthesis of economically viable VO2(M1) counter electrode for dye sensitized solar cells
| Autor: | John I. B. Wilson, Radu Banica, Geeta Rani Mutta, S. R. Popuri, Nick Bennett, Neil Robertson, M. Vasundhara, Michal Maciejczyk, Andrei V. Racu |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Auxiliary electrode
Materials science Reducing agent Mechanical Engineering Energy conversion efficiency Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences 0104 chemical sciences Dye-sensitized solar cell chemistry Mechanics of Materials Electrode Hydrothermal synthesis General Materials Science 0210 nano-technology Platinum |
| Zdroj: | Mutta, G R, Popuri, S R, Vasundhara, M, Maciejczyk, M, Racu, A V, Banica, R, Robertson, N, Wilson, J I B & Bennett, N S 2016, ' Facile hydrothermal synthesis of economically viable VO2(M1) counter electrode for dye sensitized solar cells ', Materials research bulletin, vol. 83, pp. 135-140 . https://doi.org/10.1016/j.materresbull.2016.05.027 |
| DOI: | 10.1016/j.materresbull.2016.05.027 |
| Popis: | In this study, we focus at reducing the fabrication cost of dye sensitized solar cells (DSSCs). Sphere-like VO 2 (M1) polymorph was synthesized by single step facile hydrothermal approach using citric acid as the reducing agent. Phase purity, charge state and surface morphology of the synthesized product were confirmed by X-ray diffraction, X-ray photoelectron spectroscopy and scanning electron microscopy respectively. The electrochemical impedance and cyclic voltammograms of VO 2 films indicated a good electrocatalytic activity towards redox reaction of the I ⿿ /I 3 ⿿ shuttle. Owing to the low cost, low-temperature processing and good catalytic activity, in this work we propose to use VO 2 as a counter electrode to substitute the expensive platinum electrode in DSSCs. By means of VO 2 based DSSCs we achieved a fivefold reduction in the cost to energy conversion efficiency ratio. It is expected that with further optimization, VO 2 can be exploited as a good candidate for counter electrode in DSSC technology. |
| Databáze: | OpenAIRE |
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