Metallic Conductive Luminescent Film

Jin He, Botao Ji, Somnath Koley, Uri Banin*, David Avnir

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We report a solution for the challenge of having luminescence and metal conductivity from the same material. The fabrication of a hybrid metal-conductive luminescent film that manifests this dual property is described: the conductivity arising from a continuous gold thin film structure and luminescence originating from the embedded fluorescent emitters (nanoparticles of silica-coated CdSe/CdS quantum dots (QD/SiO2 NPs)). The embedding of the QD/SiO2 NPs is performed via a selflating gold electroless process. The presence of the insulating silica layer on the QDs avoids quenching and enables luminescence, while still allowing plasmonic coupling of the QDs, as observed by luminescence lifetime analysis and by surface-enhanced Raman scattering. The potential applications of this special dual functionality are demonstrated by its used as a temperature probe: Passing current (heating the gold thin film) affects the emission intensity and induces a spectral red-shift of the QD/SiO2 NPs. All properties of this metal-conductive luminescent film required the special embedding architecture and are not observed with simple adsorption of QD/SiO2 NPs on a continuous Au film.

Original languageAmerican English
Pages (from-to)10826-10834
Number of pages9
JournalACS Nano
Volume13
Issue number9
DOIs
StatePublished - 30 Jul 2019

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

Keywords

  • current/temperature sensitive
  • embedding
  • fluorescence
  • metallic conductive
  • quantum dots

Fingerprint

Dive into the research topics of 'Metallic Conductive Luminescent Film'. Together they form a unique fingerprint.

Cite this