Highly Versatile Upconverting Oxyfluoride-Based Nanophosphor Films.

ABSTRACT: Fluoride-based compounds doped with rare-earth cations are the preferred choice of materials to achieve efficient upconversion, of interest for a plethora of applications ranging from bioimaging to energy harvesting. Herein, we demonstrate a simple route to fabricate bright upconverting films that are transparent, self-standing, flexible, and emit different colors. Starting from the solvothermal synthesis of uniform and colloidally stable yttrium fluoride nanoparticles doped with Yb³⁺ and Er³⁺, Ho³⁺, or Tm³⁺, we find the experimental conditions to process the nanophosphors as optical quality films of controlled thickness between few hundreds of nanometers and several micrometers. A thorough analysis of both structural and photophysical properties

SUBMITTER: Ngo TT 

PROVIDER: S-EPMC8251696 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature