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RF-sputtered tungsten enabled surface plasmon effect in dye sensitised solar cells

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : IET Optoelectronics,

Source : IET Optoelectronics, Volume 14, Number 5, p.274-277 (2020)

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Keywords : Coatings, current density, DSSC, dye sensitised solar cells, Dye-sensitised solar cells, Dyes, effective charge transport, electron acceptor, exciton generation, excitons, local field-induced enhancement, mesoporous materials, mesoporous TiO2, metallic thin films, narrow band optical absorption, organic dyes, porous semiconductors, RF-sputtered tungsten thin film, short circuit current density, Short-circuit currents, Sputtering, surface plasmon effect, surface plasmons, Titanium compounds, Tungsten, tungsten-thin film-coated TiO2, ultraviolet spectra, UV-visible spectroscopic measurement, Visible spectra, W-TiO2, wavelength 350.0 nm to 700.0 nm

Campus : Amritapuri

School : Center for Nanosciences

Center : Amrita Center for Nanosciences and Molecular Medicine Move

Department : Nanosciences and Molecular Medicine

Year : 2020

Abstract : This work examined the possibility of overcoming narrow band optical absorption of organic dyes in the range of 350–700nm via surface plasmon effect mediated by RF-sputtered tungsten (W) thin film on mesoporous TiO2 for dye-sensitised solar cells (DSSCs) application. The UV–visible spectroscopic measurement showed optical absorption of W-film in the spectral range of 350–700nm with a dominant characteristic feature in the range of 350–550nm. W-thin film-coated TiO2 was used as an electron acceptor in DSSCs and observed ∼28% enhancement in short circuit current density compared to that of in a pristine TiO2-based DSSC which did not use W-thin film on TiO2. It is attributed to the local field-induced enhancement in optical absorption which resulted in improved exciton generation and effective charge transport in DSSCs enabled by W-thin film coating onto mesoporous TiO2.

Cite this Research Publication : L. Srinivasan, Ramanathan, K. Velu, Gopakumar, G., Shantikumar V Nair, and Dr. Mariyappan Shanmugam, “RF-sputtered tungsten enabled surface plasmon effect in dye sensitised solar cells”, IET Optoelectronics, vol. 14, pp. 274-277, 2020.

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