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Sub-Bandgap Sensitization of Perovskite Semiconductors via Colloidal Quantum Dots Incorporation

2023-09Journal article Open access
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dc.contributor.authorRibeiro, Guilherme
dc.contributor.authorFerreira, G.
dc.contributor.authorMenda, U.D.
dc.contributor.authorAlexandre, Miguel
dc.contributor.authorBrites, Maria João
dc.contributor.authorBarreiros, M. Alexandra
dc.contributor.authorJana, S.
dc.contributor.authorÁguas, Hugo
dc.contributor.authorMartins, Rodrigo
dc.contributor.authorFernandes, P.A.
dc.contributor.authorSalomé, P.M.P.
dc.contributor.authorMendes, M.J.
dc.date.accessioned2023-10-06T14:45:45Z
dc.date.available2023-10-06T14:45:45Z
dc.date.issued2023-09
dc.description.abstractABSTRACT: By taking advantage of the outstanding intrinsic optoelectronic properties of perovskite-based photovoltaic materials, together with the strong near-infrared (NIR) absorption and electronic confinement in PbS quantum dots (QDs), sub-bandgap photocurrent generation is possible, opening the way for solar cell efficiencies surpassing the classical limits. The present study shows an effective methodology for the inclusion of high densities of colloidal PbS QDs in a MAPbI3 (methylammonium lead iodide) perovskite matrix as a means to enhance the spectral window of photon absorption of the perovskite host film and allow photocurrent production below its bandgap. The QDs were introduced in the perovskite matrix in different sizes and concentrations to study the formation of quantum-confined levels within the host bandgap and the potential formation of a delocalized intermediate mini-band (IB). Pronounced sub-bandgap (in NIR) absorption was optically confirmed with the introduction of QDs in the perovskite. The consequent photocurrent generation was demonstrated via photoconductivity measurements, which indicated IB establishment in the films. Despite verifying the reduced crystallinity of the MAPbI3 matrix with a higher concentration and size of the embedded QDs, the nanostructured films showed pronounced enhancement (above 10-fold) in NIR absorption and consequent photocurrent generation at photon energies below the perovskite bandgap.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRibeiro, G... et.al - Sub-Bandgap Sensitization of Perovskite Semiconductors via Colloidal Quantum Dots Incorporation. In: Nanomaterials, 2023, vol. 13 (17), article nº 2447pt_PT
dc.identifier.doi10.3390/nano13172447pt_PT
dc.identifier.eissn2079-4991
dc.identifier.urihttp://hdl.handle.net/10400.9/4159
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationSYmbiosis for eNERGY harversting concepts for smart platforms on foils
dc.relationInstitute of Nanostructures, Nanomodelling and Nanofabrication
dc.relationInstitute of Nanostructures, Nanomodelling and Nanofabrication
dc.relationHighly-Efficient Quantum-Nanostructured Thin-Film Solar Cells
dc.relation.publisherversionhttps://doi.org/10.3390/nano13172447pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPhotovoltaic materialspt_PT
dc.subjectPerovskite solar cellspt_PT
dc.titleSub-Bandgap Sensitization of Perovskite Semiconductors via Colloidal Quantum Dots Incorporationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSYmbiosis for eNERGY harversting concepts for smart platforms on foils
oaire.awardTitleInstitute of Nanostructures, Nanomodelling and Nanofabrication
oaire.awardTitleInstitute of Nanostructures, Nanomodelling and Nanofabrication
oaire.awardTitleHighly-Efficient Quantum-Nanostructured Thin-Film Solar Cells
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/952169/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50025%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50025%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F151095%2F2021/PT
oaire.citation.titleNanomaterialspt_PT
oaire.citation.volume13pt_PT
oaire.fundingStreamH2020
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameRibeiro
person.familyNameAlexandre
person.familyNameBrites
person.familyNameBarreiros
person.familyNameÁguas
person.familyNameMartins
person.givenNameGuilherme
person.givenNameMiguel
person.givenNameMaria João de Sousa
person.givenNameMaria Alexandra
person.givenNameHugo
person.givenNameRodrigo
person.identifier1848709
person.identifierL-4674-2014
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person.identifier.ciencia-id6710-13F6-3011
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person.identifier.ciencia-id8610-B29C-1FA8
person.identifier.orcid0000-0001-6335-4672
person.identifier.orcid0000-0002-7533-9469
person.identifier.orcid0000-0002-1081-7191
person.identifier.orcid0000-0002-0132-4969
person.identifier.orcid0000-0001-7350-649X
person.identifier.orcid0000-0002-1997-7669
person.identifier.ridC-4484-2013
person.identifier.ridC-4337-2013
person.identifier.scopus-author-id57208444863
person.identifier.scopus-author-id6603680496
person.identifier.scopus-author-id7006303417
person.identifier.scopus-author-id7202166114
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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