Control of Hot Carrier Relaxation in CsPbBr3 Nanocrystals Using Damping Ligands

Lade...
Vorschaubild
Dateien
Zu diesem Dokument gibt es keine Dateien.
Datum
2022
Autor:innen
Zeng, Peng
Ren, Xinjian
Wei, Linfeng
Zhao, Haifeng
Liu, Xiaochun
Zhang, Xinyang
Xu, Yanmin
Yan, Lihe
Smith, Trevor A.
et al.
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Angewandte Chemie. Wiley-Blackwell. 2022, 134(15), e202111443. ISSN 0932-2159. eISSN 1521-3757. Available under: doi: 10.1002/ange.202111443
Zusammenfassung

In photon-conversion processes, rapid cooling of photo-induced hot carriers is a dominant energy loss channel. We herein report a 3-fold reduced hot carrier cooling rate in CsPbBr 3 nanocrystals capped with a cross-linked polysiloxane shell in comparison to single alkyl-chain oleylamine ligands. Relaxation of hot charge carriers depends on the carrier-phonon coupling (CPC) process as an important channel to dissipate energies in nanostructured perovskite materials. The CPC strengths in the two samples were measured through cryogenic photoluminescence spectroscopic measurements. The effect of organic ligands on the CPC in CsPbBr 3 nanocrystals is elucidated based on a damped oscillation model. This supplements the conventional polaron-based CPC model, by involving a damping effect on the CPC from the resistance of the ligands against nanocrystal lattice vibrations. The model also accounts for the observed linear temperature-dependence of the CPC strength. Our work enables predictions about the effect of the ligands on the performance of perovskite nanocrystals in future applications.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
540 Chemie
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690ZENG, Peng, Xinjian REN, Linfeng WEI, Haifeng ZHAO, Xiaochun LIU, Xinyang ZHANG, Yanmin XU, Lihe YAN, Klaus BOLDT, Trevor A. SMITH, 2022. Control of Hot Carrier Relaxation in CsPbBr3 Nanocrystals Using Damping Ligands. In: Angewandte Chemie. Wiley-Blackwell. 2022, 134(15), e202111443. ISSN 0932-2159. eISSN 1521-3757. Available under: doi: 10.1002/ange.202111443
BibTex
@article{Zeng2022Contr-56356,
  year={2022},
  doi={10.1002/ange.202111443},
  title={Control of Hot Carrier Relaxation in CsPbBr<sub>3</sub> Nanocrystals Using Damping Ligands},
  number={15},
  volume={134},
  issn={0932-2159},
  journal={Angewandte Chemie},
  author={Zeng, Peng and Ren, Xinjian and Wei, Linfeng and Zhao, Haifeng and Liu, Xiaochun and Zhang, Xinyang and Xu, Yanmin and Yan, Lihe and Boldt, Klaus and Smith, Trevor A.},
  note={Article Number: e202111443}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/56356">
    <dc:creator>Ren, Xinjian</dc:creator>
    <dc:contributor>Zeng, Peng</dc:contributor>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/52"/>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:creator>Boldt, Klaus</dc:creator>
    <dc:creator>Wei, Linfeng</dc:creator>
    <dc:rights>terms-of-use</dc:rights>
    <dc:contributor>Zhang, Xinyang</dc:contributor>
    <dc:contributor>Ren, Xinjian</dc:contributor>
    <dc:creator>Zhao, Haifeng</dc:creator>
    <dc:creator>Yan, Lihe</dc:creator>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/52"/>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/56356"/>
    <dc:creator>Zhang, Xinyang</dc:creator>
    <dc:creator>Smith, Trevor A.</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/29"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2022-01-26T09:09:38Z</dcterms:available>
    <dcterms:title>Control of Hot Carrier Relaxation in CsPbBr&lt;sub&gt;3&lt;/sub&gt; Nanocrystals Using Damping Ligands</dcterms:title>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/29"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:issued>2022</dcterms:issued>
    <dc:contributor>Zhao, Haifeng</dc:contributor>
    <dc:contributor>Boldt, Klaus</dc:contributor>
    <dc:creator>Xu, Yanmin</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2022-01-26T09:09:38Z</dc:date>
    <dc:contributor>Xu, Yanmin</dc:contributor>
    <dcterms:abstract xml:lang="eng">In photon-conversion processes, rapid cooling of photo-induced hot carriers is a dominant energy loss channel. We herein report a 3-fold reduced hot carrier cooling rate in CsPbBr 3 nanocrystals capped with a cross-linked polysiloxane shell in comparison to single alkyl-chain oleylamine ligands. Relaxation of hot charge carriers depends on the carrier-phonon coupling (CPC) process as an important channel to dissipate energies in nanostructured perovskite materials. The CPC strengths in the two samples were measured through cryogenic photoluminescence spectroscopic measurements. The effect of organic ligands on the CPC in CsPbBr 3 nanocrystals is elucidated based on a damped oscillation model. This supplements the conventional polaron-based CPC model, by involving a damping effect on the CPC from the resistance of the ligands against nanocrystal lattice vibrations. The model also accounts for the observed linear temperature-dependence of the CPC strength. Our work enables predictions about the effect of the ligands on the performance of perovskite nanocrystals in future applications.</dcterms:abstract>
    <dc:creator>Liu, Xiaochun</dc:creator>
    <dc:language>eng</dc:language>
    <dc:contributor>Liu, Xiaochun</dc:contributor>
    <dc:contributor>Smith, Trevor A.</dc:contributor>
    <dc:contributor>Wei, Linfeng</dc:contributor>
    <dc:contributor>Yan, Lihe</dc:contributor>
    <dc:creator>Zeng, Peng</dc:creator>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Ja
Diese Publikation teilen