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Energy transfer versus charge separation in hybrid systems of semiconductor quantum dots and Ru-dyes as potential co-sensitizers of TiO2-based solar cells.
dc.contributor.author | Bisquert, Juan | |
dc.contributor.author | Mora-Sero, Ivan | |
dc.contributor.author | Gimenez, Sixto | |
dc.contributor.author | Rogach, A. L. | |
dc.contributor.author | Lutich, Andrey A. | |
dc.contributor.author | Gross, Dieter | |
dc.contributor.author | Poeschl, Andreas | |
dc.contributor.author | Susha, A. S. | |
dc.contributor.author | Lana-Villarreal, Teresa | |
dc.date.accessioned | 2012-10-30T19:31:03Z | |
dc.date.available | 2012-10-30T19:31:03Z | |
dc.date.issued | 2011-07 | |
dc.identifier.issn | 0021-8979 | |
dc.identifier.uri | http://hdl.handle.net/10234/50295 | |
dc.description.abstract | Hybrid structures of colloidal quantum dots (QDs) with Ru-dyes have been studied as candidates for panchromatic sensitizers for TiO2-based solar cells. Steady-state and time resolved photoluminescence spectroscopy and photocurrent measurements have been employed to identify the prevailing transfer mechanisms for photogenerated excitons between CdSe QDs capped with a traditional bulky organic ligand trioctylphosphine and Ru-dyes (N3 or Ru505) deposited onto inert glass or mesoporous TiO2 substrates. The type II energy level alignment between the QDs and both N3 and Ru505 offers a possibility for the directional charge separation, with electrons transferred to the QDs and holes to the dye. This scenario is indeed valid for the QD/Ru505 and TiO2/QD/Ru505 hybrid systems, with the negligible spectral overlap between the emission of the QDs and the absorption of the Ru505 dye. For the QD/N3 and TiO2/QD/N3 hybrid systems, the spectral overlap favors the longer range energy transfer from the QDs to N3, independently of the presence of the electron acceptor TiO2. | ca_CA |
dc.format.extent | 7 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | © 2011 American Institute of Physics | ca_CA |
dc.relation.isPartOf | Journal of Applied Physics (July 2011), vol. 110, no. 1 | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/CNE/1.0/ | * |
dc.subject | cadmium compounds | ca_CA |
dc.subject | dyes | ca_CA |
dc.subject | excitons | ca_CA |
dc.subject | photoconductivity | ca_CA |
dc.subject | II-VI semiconductors | ca_CA |
dc.subject | photoluminescence | ca_CA |
dc.subject | semiconductor materials | ca_CA |
dc.title | Energy transfer versus charge separation in hybrid systems of semiconductor quantum dots and Ru-dyes as potential co-sensitizers of TiO2-based solar cells. | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1063/1.3605486 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://jap.aip.org/resource/1/japiau/v110/i1/p014314_s1 | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion |
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