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Panchromatic sensit...
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Braga, AntonioPhotovoltaic and Optoelectronic Devices Group
(författare)
Panchromatic sensitized solar cells based on metal sulfide quantum dots grown directly on nanostructured TiO2 electrodes
- Artikel/kapitelEngelska2011
Förlag, utgivningsår, omfång ...
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2011-02-11
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American Chemical Society (ACS),2011
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:ltu-13885
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https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-13885URI
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https://doi.org/10.1021/jz2000112DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Upprättat; 2011; 20141117 (albvom)
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The use of narrow band gap semiconductors such as PbS may expand the light absorption range to the near-infrared region in quantum-dot-sensitized solar cells (QDSCs), increasing the generated photocurrent. However, the application of PbS as a sensitizer in QDSCs causes some problems of stability and high recombination. Here, we show that the direct growth of a CdS coating layer on previously deposited PbS by the simple method of successive ionic layer adsorption and reaction (SILAR) minimizes these problems. A remarkable short-circuit current density for PbS/CdS QDSCs is demonstrated, ∼11 mA/cm2, compared to that of PbS QDSCs, with photocurrents lower than 4 mA/cm2, using polysulfide electrolyte in both cells. The cell efficiency reached a promising 2.21% under 1 sun of simulated irradiation (AM1.5G, 100 mW/cm2). Enhancement of the solar cell performance beyond the arithmetic addition of the efficiencies of the single constituents (PbS and CdS) is demonstrated for the nanocomposite PbS/CdS configuration. PbS dramatically increases the obtained photocurrents, and the CdS coating stabilizes the solar cell behavior. © 2011 American Chemical Society.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Giménez, SixtoPhotovoltaic and Optoelectronic Devices Group
(författare)
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Concina, IsabellaDepartment of Physics and Chemistry, INFM — University of Brescia(Swepub:ltu)isacon
(författare)
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Vomiero, AlbertoDepartment of Physics and Chemistry for Materials and Engineering and CNR-IDASC SENSOR Lab, Brescia University(Swepub:ltu)albvom
(författare)
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Mora-Seró, IvánPhotovoltaic and Optoelectronic Devices Group
(författare)
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Photovoltaic and Optoelectronic Devices GroupDepartment of Physics and Chemistry, INFM — University of Brescia
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of Physical Chemistry Letters: American Chemical Society (ACS)2:5, s. 454-4601948-7185
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