In this paper, we report an experimental procedure for active layer nanostructuring in Dye Sensitized Solar Cells (DSCs) to enhance light harvesting. A Bragg grating has been realized on a high performance commercial photoresist by means of the Laser Interference Lithography (LIL) technique. Subsequently this structure has been replicated by a Soft Lithographic process on a polydimethylsiloxane (PDMS) mold, which finally allowed the direct imprinting of the DSC's titania layer under UV illumination. Morphological analysis demonstrated a successful pattern transfer over a large area. Spectroscopic and photovoltaic measurements have been performed on nanostructured and traditional bare DSCs. In the spectral range 500–750 nm the patterned cell showed a lower transmission and reflection indicating that the grating acts efficiently as a light harvesting element. I–V and Incident Photon to Current Efficiency (IPCE) characterization showed an enhancement of 31% of the cell efficiency, confirming the effectiveness of this method.

D’Amico, L., Colonna, D., De Angelis, R., Casalboni, M., DE MATTEIS, F., DI CARLO, A., et al. (2014). Bragg gratings nanostructuring of TiO2 layer in dye sensitized solar cells: an efficient method to enhance light harvesting. RSC ADVANCES, 4, 43828-43833 [10.1039/C4RA07785G].

Bragg gratings nanostructuring of TiO2 layer in dye sensitized solar cells: an efficient method to enhance light harvesting

CASALBONI, MAURO;DE MATTEIS, FABIO;DI CARLO, ALDO;PROSPOSITO, PAOLO
2014

Abstract

In this paper, we report an experimental procedure for active layer nanostructuring in Dye Sensitized Solar Cells (DSCs) to enhance light harvesting. A Bragg grating has been realized on a high performance commercial photoresist by means of the Laser Interference Lithography (LIL) technique. Subsequently this structure has been replicated by a Soft Lithographic process on a polydimethylsiloxane (PDMS) mold, which finally allowed the direct imprinting of the DSC's titania layer under UV illumination. Morphological analysis demonstrated a successful pattern transfer over a large area. Spectroscopic and photovoltaic measurements have been performed on nanostructured and traditional bare DSCs. In the spectral range 500–750 nm the patterned cell showed a lower transmission and reflection indicating that the grating acts efficiently as a light harvesting element. I–V and Incident Photon to Current Efficiency (IPCE) characterization showed an enhancement of 31% of the cell efficiency, confirming the effectiveness of this method.
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Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - Fisica della Materia
English
Con Impact Factor ISI
D’Amico, L., Colonna, D., De Angelis, R., Casalboni, M., DE MATTEIS, F., DI CARLO, A., et al. (2014). Bragg gratings nanostructuring of TiO2 layer in dye sensitized solar cells: an efficient method to enhance light harvesting. RSC ADVANCES, 4, 43828-43833 [10.1039/C4RA07785G].
D’Amico, L; Colonna, D; De Angelis, R; Casalboni, M; DE MATTEIS, F; DI CARLO, A; Prosposito, P
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/101688
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