Permanent Electrochemical Doping of Quantum Dot Films through Photopolymerization of Electrolyte Ions.
Journal
Chemistry of materials : a publication of the American Chemical Society
ISSN: 0897-4756
Titre abrégé: Chem Mater
Pays: United States
ID NLM: 9884133
Informations de publication
Date de publication:
10 May 2022
10 May 2022
Historique:
received:
20
01
2022
revised:
14
04
2022
entrez:
16
5
2022
pubmed:
17
5
2022
medline:
17
5
2022
Statut:
ppublish
Résumé
Quantum dots (QDs) are considered for devices like light-emitting diodes (LEDs) and photodetectors as a result of their tunable optoelectronic properties. To utilize the full potential of QDs for optoelectronic applications, control over the charge carrier density is vital. However, controlled electronic doping of these materials has remained a long-standing challenge, thus slowing their integration into optoelectronic devices. Electrochemical doping offers a way to precisely and controllably tune the charge carrier concentration as a function of applied potential and thus the doping levels in QDs. However, the injected charges are typically not stable after disconnecting the external voltage source because of electrochemical side reactions with impurities or with the surfaces of the QDs. Here, we use photopolymerization to covalently bind polymerizable electrolyte ions to polymerizable solvent molecules after electrochemical charge injection. We discuss the importance of using polymerizable dopant ions as compared to nonpolymerizable conventional electrolyte ions such as LiClO
Identifiants
pubmed: 35573106
doi: 10.1021/acs.chemmater.2c00199
pmc: PMC9097154
doi:
Types de publication
Journal Article
Langues
eng
Pagination
4019-4028Informations de copyright
© 2022 The Authors. Published by American Chemical Society.
Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
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