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dc.contributor.authorda Costa, VCP
dc.contributor.authorGonzalez-Rodriguez, R
dc.contributor.authorFrohna, Kyle
dc.contributor.authorDelport, G
dc.contributor.authorStranks, Samuel
dc.contributor.authorCanham, LT
dc.contributor.authorCoffer, JL
dc.date.accessioned2020-09-28T23:30:50Z
dc.date.available2020-09-28T23:30:50Z
dc.date.issued2020-11
dc.identifier.issn2196-7350
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/310807
dc.description.abstract© 2020 Wiley-VCH GmbH In influencing fundamental properties—and ultimately device performance—of lead halide perovskites, interfacial interactions play a major role, notably with regard to carrier diffusion and recombination. Here anodized porous Si (pSi) as well as porous silica particles are employed as templates for formation of methylammonium lead trihalide nanostructures. This allows synthesis of relatively small perovskite domains and comparison of associated interfacial chemistry between as-prepared hydrophobic hydrideterminated functionalities and hydrophilic oxide-terminated surfaces. While physical confinement of MAPbBr3 has a uniform effect on carrier lifetime, pore size (7–18 nm) of the silicon-containing template has a sensitive influence on perovskite photoluminescence (PL) wavelength maximum. Furthermore, identity of the surface functionality of the template significantly alters the PL quantum efficiency, with lowest PL intensity associated with the H-terminated pSi and the most intense PL affiliated with the oxideterminated pSi surface. These effects are explored for green-emitting MAPbBr3 as well as infrared-emitting MAPbI3. In addition, the role of silicon surface chemistry on the time-dependent stability of these perovskites packaged within a given mesoporous template is also evaluated, specifically, a lack of miscibility between MAPbI3 and the H-terminated pSi template results in a diffusion of this specific perovskite composition eluting from this porous matrix over time.
dc.publisherWiley-Blackwell
dc.rightsAll rights reserved
dc.titleImpact of Mesoporous Silicon Template Pore Dimension and Surface Chemistry on Methylammonium Lead Trihalide Perovskite Photophysics
dc.typeArticle
prism.publicationNameAdvanced Materials Interfaces
dc.identifier.doi10.17863/CAM.57896
dcterms.dateAccepted2020-09-13
rioxxterms.versionofrecord10.1002/admi.202001138
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2020-09-13
dc.contributor.orcidFrohna, Kyle [0000-0002-2259-6154]
dc.contributor.orcidStranks, Samuel [0000-0002-8303-7292]
dc.identifier.eissn2196-7350
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/R023980/1)
pubs.funder-project-idRoyal Society (UF150033)
cam.issuedOnline2020-09-13
cam.orpheus.successTue Oct 06 10:24:12 BST 2020 - Embargo updated
rioxxterms.freetoread.startdate2021-09-13


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