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Enhanced Carrier Transport Distance in Colloidal PbS Quantum-Dot-Based Solar Cells Using ZnO Nanowires
dc.contributor.author | Wang, Haibin | |
dc.contributor.author | González Pedro, Victoria | |
dc.contributor.author | Kubo, Takaya | |
dc.contributor.author | Fabregat-Santiago, Francisco | |
dc.contributor.author | Bisquert, Juan | |
dc.contributor.author | Sanehira, Yoshitaka | |
dc.date.accessioned | 2016-04-21T14:59:29Z | |
dc.date.available | 2016-04-21T14:59:29Z | |
dc.date.issued | 2015-11 | |
dc.identifier.issn | 1932-7447 | |
dc.identifier.issn | 1932-7455 | |
dc.identifier.uri | http://hdl.handle.net/10234/158911 | |
dc.description.abstract | Nanostructured solar cells are a promising area of research for the production of low cost devices that may eventually be capable of complementing or even replacing present technologies in the field of solar power generation. The use of quantum dots (QDs) in solar cells has evolved from being simple absorbers in dye-sensitized solar cells to sustaining the double functions of absorbers and carrier transporters in full solid state devices. In this work, we use both optical and electrical measurements to explore the diffusion limitations of carrier transport in cells made of a heterostructure combining lead sulfide (PbS) QDs as absorbers and hole carrier and zinc oxide nanowires as electron carrier material. The results show efficient charge collection along the PbS-QD/ZnO nanowire (NW) hybrid structure. This is because of the formation of band bending in the ZnO collector, allowing efficient charge separation and spatially well-separated carrier pathways, yielding a hole transportation of over 1 μm. We have also found a limitation in open-circuit voltage (Voc) associated with band bending in the ZnO collector. | ca_CA |
dc.description.sponsorShip | This research is supported by the Japan Science and Technology Agency (JST) thorough its “Funding Program for Core Research for Evolutional Science and Technology (339-5 CREST)” and New Energy and Industrial Technology Development Organization (0520002 NEDO) and the Ministry of Economy, Trade and Industry (METI), Japan. The work is also supported by Generalitat Valenciana (ISIC/2012/008 Institute of Nanotechnologies for Clean Energies, PROMETEO/2014/020). This work is partly supported by JX Nippon Oil & Energy Corporation. Cordial thanks are due to Toyo Corporation for the use of the ModuLab system (Solartron) for obtaining IMPS data. | |
dc.format.extent | 10 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | American Chemical Society | ca_CA |
dc.relation.isPartOf | The Journal of Physical Chemistry C, 2015, vol. 119, núm. 49 | ca_CA |
dc.rights | Copyright © 2015 American Chemical Society | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | Dye-sensitized solar cells | ca_CA |
dc.subject | Nanocrystals | ca_CA |
dc.subject | Nanostructured materials | ca_CA |
dc.subject | Nanowires | ca_CA |
dc.subject | Open circuit voltage | ca_CA |
dc.title | Enhanced Carrier Transport Distance in Colloidal PbS Quantum-Dot-Based Solar Cells Using ZnO Nanowires | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1021/acs.jpcc.5b09152 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.5b09152 | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion |
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