Enhanced Stokes-shift and dispersibility in non-polar PMMA solvent of CdTe quantum dots by silica coating

Alvaro Flores-Pacheco, Raúl Sánchez-Zeferino, Gerardo Saavedra-Rodríguez, Jorge Indalecio Contreras-Rascón, Joel Díaz-Reyes, Mario Enrique Álvarez-Ramos

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Silica-coated cadmium telluride quantum dots (CdTe@SiO2) exhibit increased sensitivity to UV illumination within the 300–400 nm range, allowing long and efficient Stokes-shifted emissions with more than 300 nm of separation from the excitation source. In addition, the surface modification of water-soluble CdTe quantum dots promotes a better dispersibility in a non-polar solvent (chloroform), allowing the facile fabrication of a highly luminescent PMMA/CdTe@SiO2 composite with uniformly distributed CdTe@SiO2 clusters suitable for photonic applications.

Original languageEnglish
Article number111102
JournalChemical Physics
Volume544
DOIs
StatePublished - 1 Apr 2021

Keywords

  • CdTe quantum dots
  • Luminescent films
  • Photonics
  • Silica coating

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