Thermal enhancement of up-conversion luminescence in Lu2W2.5Mo0.5O12: Er3+, Yb3+ phosphors

Three-wavelength exciting up-conversion luminescence and various optical temperature sensing of a novel Er3+, Yb3+, Ho3+ doped (Gd,Y,Lu)2O2S phosphor

“…3f that when excited by 1064 nm, the lattice expansion of the sample increases the distance between Yb 3+ ions and Ho 3+ ions or Er 3+ ions, which increases the positive energy transfer from Yb 3+ ions to Er 3+ ions and Ho 3+ ions. 34 Thus, it improves the luminescence intensity. However, when the excited light is 980 nm, the Er 3+ ion itself plays an important role in the photon absorption process, with lattice expansion.…”

Anti-thermal quenching of luminescence in Y2W3O12:Yb3+/RE3+ (RE = Er/Ho/Tm) and its temperature sensing application

“…26 Cui et al prepared Lu 2 W 2.5 Mo 0.5 O 12 :Yb 3+ /Er 3+ phosphor, and the UC emission thermal enhancement of Er 3+ ions was obtained. 27 Wang et al designed Yb 3+ /Er 3+ codoping into orthogonal Yb 2 W 3 O 12 , and the emission intensities of Er 3+ ions increased with temperature enhancement. 28 Generally, the NTE mechanism is used to illustrate the thermal enhancement phenomenon.…”

Investigation on anomalous thermal enhancement and temperature sensing properties of Zn3Mo2O9:Yb3+/RE3+ (RE = Er/Ho) phosphors

“…26 In 2021, Cui et al reported the thermal enhancement of UC luminescence of Er 3+ /Yb 3+ co-doped Lu 2 W 2.5 Mo 0.5 O 12 nanoparticles. 27 Zhou et al reviewed the fluorescent mechanisms and potential applications of the abnormal, thermally-enhanced UC fluorescence for RE-doped materials. They summarized the reported possible mechanism, such as multiphoton-assisted energy transfer from Yb 3+ to Ln 3+ , the heating-induced alleviation of surface quenching, and NET.…”