Thermodynamic silver doping of core/shell colloidal quantum wells imparted with paramagnetic properties emitting at near-infrared

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buir.contributor.authorShabani, Farzan
buir.contributor.authorAhmad, Muhammad
buir.contributor.authorKumar, Satish
buir.contributor.authorDelikanlı, Savaş
buir.contributor.authorIşık, Furkan
buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidShabani, Farzan|0000-0003-2174-5960
buir.contributor.orcidIşık, Furkan|0000-0001-5881-5438
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage4170en_US
dc.citation.issueNumber11
dc.citation.spage4159
dc.citation.volumeNumber35
dc.contributor.authorShabani, Farzan
dc.contributor.authorAhmad, Muhammad
dc.contributor.authorKumar, Satish
dc.contributor.authorDelikanlı, Savaş
dc.contributor.authorIşık, Furkan
dc.contributor.authorBhattacharya, A.
dc.contributor.authorPetrou, A.
dc.contributor.authorDemir, Hilmi Volkan
dc.coverage.spatialUnited States
dc.date.accessioned2024-03-18T08:41:36Z
dc.date.available2024-03-18T08:41:36Z
dc.date.issued2023-05-29
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)
dc.departmentDepartment of Electrical and Electronics Engineering
dc.departmentDepartment of Physics
dc.description.abstractTwo-dimensional (2D) core/shell nanoplatelets (NPLs) synthesized via the hot-injection method provide excellent thermal and chemical stability for high-temperature doping, where an expanded and flexible lattice is required. Here, a thermodynamic approach toward silver doping of these NPLs is proposed and demonstrated, which previously proved to be challenging due to the fast self-purification of the dopants with the introduction of the shell. Maintaining the doping procedure in the reversible regime ensured the integrity of the NPLs and allowed a high level of doping; however, the equilibrium condition is further complicated by environmental factors that affect the chemical activity of the cations and the surface composition of the NPLs. Two main deterioration mechanisms in the irreversible regime were observed: ZnS-shelled NPLs suffered preferential etching, while CdS-shelled NPLs underwent cleavage and fragmentation. Alloying of the shell minimized both mechanisms for CdZnS-shelled NPLs and preserved the metastable state of the NPLs, including their 2D shape and crystalline structure. Distribution of silver ions in the lattice of the NPLs directly affected the recombination dynamics and enabled fine-tuning of the near-infrared emission beside the exciton confinement. These silver-doped CdZnS-shelled NPLs are shown further to exhibit enhanced paramagnetic properties with Zeeman splitting and Brillouin-like bound-exciton polarization as a function of the magnetic field, critical for spintronic applications
dc.identifier.doi10.1021/acs.chemmater.3c00058
dc.identifier.eissn1520-5002
dc.identifier.issn0897-4756
dc.identifier.urihttps://hdl.handle.net/11693/114869
dc.language.isoEnglish
dc.publisherAmerican Chemical Society
dc.relation.isversionofhttps://dx.doi.org/10.1021/acs.chemmater.3c00058
dc.source.titleChemistry of Materials
dc.subjectDoping
dc.subjectImpurities
dc.subjectIons
dc.subjectLattices
dc.subjectSilver
dc.titleThermodynamic silver doping of core/shell colloidal quantum wells imparted with paramagnetic properties emitting at near-infrared
dc.typeArticle
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Institute of Materials Science and Nanotechnology (UNAM)
Department of Electrical and Electronics Engineering
Department of Physics