Influence of the surrounding medium on the luminescence-based thermometric properties of single Yb³⁺/Er³⁺ codoped yttria nanocrystals.

ABSTRACT: While temperature measurements with nanometric spatial resolution can provide valuable information in several fields, most of the current literature using rare-earth based nanothermometers report ensemble-averaged data. Neglecting individual characteristics of each nanocrystal (NC) may lead to important inaccuracies in the temperature measurements. In this work, individual Yb³⁺/Er³⁺ codoped yttria NCs are characterized as nanothermometers when embedded in different environments (air, water and ethylene glycol) using the same 5 NCs in all measurements, applying the luminescence intensity ratio technique. The obtained results show that the nanothermometric behavior of each NC in water is equivalent to that in air, up to an overall brightness reduction related to a decre

SUBMITTER: Galindo JAO 

PROVIDER: S-EPMC9417197 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature