Direct evidence of a surface quenching effect on size-dependent luminescence of upconversion nanoparticles

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)7456-7460
Journal / PublicationAngewandte Chemie - International Edition
Volume49
Issue number41
Publication statusPublished - 4 Oct 2010
Externally publishedYes

Abstract

A series of Yb/Tm co-doped NaGdF4nanoparticles without or with a thin surface protection layer provide direct evidence of a surface quenching effect on size-dependent upconversion luminescence (see picture). The coating preserves the optical integrity of the nanoparticles (right-hand spectrum) and minimizes emission loss induced by surface quenching. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA.

Research Area(s)

  • Lanthanides, Nanoparticles, Size dependence, Upconversion