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dc.contributor.authorLan, Xinzheng
dc.contributor.authorMasala, Silvia
dc.contributor.authorSargent, E. H.
dc.date.accessioned2015-08-03T11:47:36Z
dc.date.available2015-08-03T11:47:36Z
dc.date.issued2014-03-01
dc.identifier.issn14761122
dc.identifier.pmid24553652
dc.identifier.doi10.1038/nmat3816
dc.identifier.urihttp://hdl.handle.net/10754/563399
dc.description.abstractThe solar-power conversion efficiencies of colloidal quantum dot solar cells have advanced from sub-1% reported in 2005 to a record value of 8.5% in 2013. Much focus has deservedly been placed on densifying, passivating and crosslinking the colloidal quantum dot solid. Here we review progress in improving charge extraction, achieved by engineering the composition and structure of the electrode materials that contact the colloidal quantum dot film. New classes of structured electrodes have been developed and integrated to form bulk heterojunction devices that enhance photocharge extraction. Control over band offsets, doping and interfacial trap state densities have been essential for achieving improved electrical communication with colloidal quantum dot solids. Quantum junction devices that not only tune the optical absorption spectrum, but also provide inherently matched bands across the interface between p-and n-materials, have proven that charge separation can occur efficiently across an all-quantum-tuned rectifying junction. © 2014 Macmillan Publishers Limited.
dc.description.sponsorshipThe authors acknowledge J. Xu for his contributions to the figures. This publication is based in part on work supported by Award KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST), the Ontario Research Fund Research Excellence Program, the Natural Sciences and Engineering Research Council (NSERC) of Canada, and Angstrom Engineering and Innovative Technology. X. L. would like to acknowledge a scholarship from the China Scholarship Council (CSC).
dc.publisherSpringer Nature
dc.titleCharge-extraction strategies for colloidal quantum dot photovoltaics
dc.typeArticle
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalNature Materials
dc.contributor.institutionUniv Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada
dc.contributor.institutionHefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China
kaust.personMasala, Silvia
kaust.grant.numberKUS-11-009-21
dc.date.published-online2014-03-01
dc.date.published-print2014-03


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