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dc.contributor.authorGreenham, Neil
dc.contributor.authorKarani, Arfa
dc.contributor.authorDi, Dawei
dc.contributor.authorYang, Le
dc.date.accessioned2018-06-01T10:39:51Z
dc.date.available2018-06-01T10:39:51Z
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/276432
dc.description.abstractMetal-halide perovskite-based tandem solar cells show great promise for overcoming the Shockley-Queisser single-junction efficiency limit via low-cost tandem structures, but so far they employ conventional bottom-cell materials that require stringent processing conditions. Meanwhile, difficulty in achieving low-bandgap (<1.1 eV) perovskites limits all-perovskite tandem cell development. Here we propose a tandem cell design based on a halide-perovskite top-cell and a chalcogenide colloidal quantum dot (CQD) bottom-cell, where both materials provide bandgap-tunability and solution-processability. Theoretical efficiency of 43% is calculated for a tandem-cell bandgap combination of 1.55 eV (perovskite) and 1.0 eV (CQDs) under 1-sun illumination. We highlight that inter-subcell radiative coupling contributes significantly (>11% absolute gain) to the ultimate efficiency via photon recycling. We report initial experimental demonstration of a solution-processed monolithic perovskite/CQD tandem solar cell, showing evidence for subcell voltage addition. We model that a power-conversion efficiency of 29.7% is possible by combining the state-of-the-art perovskite and CQD solar cells.
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titlePerovskite/Colloidal Quantum Dot Tandem Solar Cells: Theoretical Modeling and Monolithic Structure
dc.typeArticle
prism.publicationNameACS Energy Letters
dc.identifier.doi10.17863/CAM.23734
dcterms.dateAccepted2018-03-13
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2018-03-13
dc.contributor.orcidGreenham, Neil [0000-0002-2155-2432]
dc.contributor.orcidKarani, Arfa [0000-0002-9038-1593]
dc.contributor.orcidDi, Dawei [0000-0003-0703-2809]
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/M005143/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/P02484X/1)
cam.orpheus.successThu Jan 30 13:04:40 GMT 2020 - The item has an open VoR version.
datacite.isderivedfrom.doi10.1021/acsenergylett.8b00207
rioxxterms.freetoread.startdate2100-01-01


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International