3D Photoelectrode for Dye Solar Cells Realized by Laser Micromachining of Photosensitive Glass

Year: 2014

Authors: Manca M., Beke S., De Marco L., Pareo P., Qualtieri A., Cannavale A., Brandi F., Gigli G.

Autors Affiliation: CBN, Center for Biomolecular Nanotechnologies, Fondazione Istituto Italiano di Tecnologia, Via Barsanti snc, 73010 Arnesano (Lecce), Italy; Department of Nanophysics, Fondazione Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy; NNL, National Nanotechnology Laboratory, Nanoscience Institute of CNR, Distretto Tecnologico, Via Arnesano 16, 73100 Lecce, Italy; Department of Mathematics and Physics “E. De Giorgi”, University of Salento, Campus Universitario, via Monteroni, 73100 Lecce, Italy; Istituto Nazionale di Ottica, CNR, Via G. Moruzzi 1, 56124 Pisa, Italy

Abstract: An explorative dye solar cell architecture based on the implementation of a 3D micropatterned photoelectrode is disclosed here. An array of conical micropillars has been realized by laser micromachining of photosensitive glass which has been advantageously used as a substrate for deposition of a thin transparent conductive layer and a thick mesoporous TiO2 electrode. A significantly higher photocurrent density has been detected as an effect of the extended overall absorbing area of the micropatterned photoelectrode with respect to a conventional 2D reference photoelectrode. This enhancement can also be partially imputable to a not negligible \”waveguide effect\” occurring within the glass micropillars.

Journal/Review: JOURNAL OF PHYSICAL CHEMISTRY C

Volume: 118 (18)      Pages from: 17100  to: 17107

More Information: This work has been partially supported by European Commission (7th FWP, Project ESCORT: Efficient Solar Cells Based on Organic and Hybrid Technology, Reference Number 261920), by Italian Minister for Education and Research (Project \”MAAT\” – PON 02_00563_3316357 – CUP B31C12001230005 and Project \”DSSCX\” – PRIN 2010-2011 No. 20104XET32); and by Apulia Regional Government (APQ Reti di Laboratorio, Project \”PHOEBUS\” cod. 31). Tozzi Renewable Energy group is also gratefully acknowledged for funding some correlated research activities on dye solar cells.
KeyWords: Photoelectrode; Photosensitive glass; Light-Harvesting efficiency; Solar cells; Laser micro-machining

DOI: 10.1021/jp501254k

Citations: 4
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