Impact of crystal structure on optical properties and temperature sensing behavior of NaYF₄:Yb³⁺/Er³⁺ nanoparticles

Abstract

We report a comprehensive study of the structural, morphological, and optical properties, and UC-based ratiometric temperature sensing behavior of (α) cubic and (β) hexagonal phases of NaYF4:Yb3+/Er3+ nanoparticles.

Bifunctional upconverting luminescent-magnetic FeS2@NaYF4:Yb3+,Er3+ core@shell nanocomposites with tunable luminescence for temperature sensing

“…the resulting NC material. [40][41][42] In the inset in Fig. 1d, a magnification of the spectrum range with the characteristic FeS 2 modes is presented, to show the presence of FeS 2 in the NC.…”

Expanding the Emission of CsPbBr3 Nanocrystals in the Blue Region

“…Lanthanide ion doping for an optically active center in different hosts/matrices has been widely explored, such as in high band gap phosphors (Gd 2 O 3 , GdScO 3 , CaMoO 4 , NaYF 4 , Ca 9 Y­(VO 4 ) 7 , etc. ), − traditional semiconductors (CdS, CdSe, GaAs, etc. ), and halide perovskites (ABX 3 , AB′B″X 3 : A = organic/inorganic ion; B, B′, B″ = metal ion; X = Cl, Br, and I). − Particularly, the doping of lanthanides in semiconductor nanocrystals/quantum dots unlocks attractive optoelectronic properties such as for photovoltaics, color and white light emitting diodes (LEDs), and detectors along with different types of sensing, anticounterfeiting, and bioimaging applications.…”