Electrogenerated Chemiluminescence and Electroluminescence of N-Doped Graphene Quantum Dots Fabricated from an Electrochemical Exfoliation Process in Nitrogen-Containing Electrolytes.
Chemistry
; 26(68): 15892-15900, 2020 Dec 04.
Article
em En
| MEDLINE
| ID: mdl-32780915
ABSTRACT
Artificial lighting sources are one of the most important technological developments for our modern lives; the search for cost-effective and efficient luminophores is therefore crucial to a sustainable future. Graphene quantum dots (GQDs) are carbon-based nanomaterials that exhibit exceptional optical and electronic properties, making them a prime candidate for a luminophore in a light-emitting device. Nitrogen-doped GQDs fabricated from a facile top-down electrochemical exfoliation process with a nitrogen-containing electrolyte in this report showed strong photoluminescent emission at 450â
nm, and electrogenerated chemiluminescence at 660â
nm in the presence of benzoyl peroxide as a coreactant. When introduced into solid-state light-emitting electrochemical cells, for the first time, the GQDs displayed a broad white emission centered at 610â
nm, corresponding to Commision Internationale de l'eclairage (CIE) colour coordinates of (0.38, 0.36).
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MEDLINE
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En
Ano de publicação:
2020
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Article