A low-temperature self-flux route to prepare hexagonal rare earth fluorides and manipulation of upconversion luminescence in rodlike NaYbF₄:Tm³⁺/Fe³⁺ crystals

Abstract

The low-temperature self-flux strategy has been applied to fabricate a large collection of pure hexagonal phase rare earth fluorides NaREF4 and REF3 (RE = rare earth) using NaNO3, RE(NO3)3·xH2O and...