NaYF₄:Er³⁺,Yb³⁺/SiO₂ Core/Shell Upconverting Nanocrystals for Luminescence Thermometry up to 900 K.

ABSTRACT: The rapid development of nanomaterials with unique size-tunable properties forms the basis for a variety of new applications, including temperature sensing. Luminescent nanoparticles (NPs) have demonstrated potential as sensitive nanothermometers, especially in biological systems. Their small size offers the possibility of mapping temperature profiles with high spatial resolution. The temperature range is however limited, which prevents use in high-temperature applications such as, for example, nanoelectronics, thermal barrier coatings, and chemical reactors. In this work, we extend the temperature range for nanothermometry beyond 900 K using silica-coated NaYF₄ nanoparticles doped with the lanthanide ions Yb³⁺ and Er³⁺. Monodisperse ∼20 nm NaYF₄

SUBMITTER: Geitenbeek RG 

PROVIDER: S-EPMC5348100 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature