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Hybrid carbon nanotubes-TiO2 photoanodes for high efficiency dye-sensitized solar cells
Institut National de la Recherche Scientifique.
CNR IDASC SENSOR Lab.
CNR IDASC SENSOR Lab.
Institut National de la Recherche Scientifique.
Vise andre og tillknytning
2013 (engelsk)Inngår i: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 117, nr 28, s. 14510-14517Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We describe a fast and effective procedure for the preparation of high efficiency hybrid photoanodes for dye-sensitized solar cells (DSCs), based on nanocrystalline TiO2 with limited addition of multiwall carbon nanotubes (CNTs). The mixing process between CNTs and TiO2 nanoparticles is almost instantaneous, which makes it feasible for large-scale fabrication. Enhanced electron lifetime and reduced charge recombination lead to highly increased short circuit current density and overall photoconversion efficiency (from 13.6 mA cm-2 to 16.0 mA cm-2 and from 7.0% to 9.0%, respectively, considering the bare TiO2 and the optimum CNTs concentration, which is 0.010 wt %), while the small reduction in open circuit photovoltage does not significantly affect cell performances. This result is remarkable since a standard dye molecule (N719) was used and no chemical treatments of the photoanodes prior to cell fabrication were applied (i.e., soaking in TiCl4 to boost open circuit photovoltage). © 2013 American Chemical Society.

sted, utgiver, år, opplag, sider
2013. Vol. 117, nr 28, s. 14510-14517
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URN: urn:nbn:se:ltu:diva-4644DOI: 10.1021/jp403553tISI: 000322150100007Scopus ID: 2-s2.0-84880540901Lokal ID: 29f5bfb5-2d02-49dd-bf41-c5f1f3b7ad8bOAI: oai:DiVA.org:ltu-4644DiVA, id: diva2:977518
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Upprättat; 2013; 20141115 (albvom)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2023-05-08bibliografisk kontrollert

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Concina, IsabellaVomiero, Alberto

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