Enhanced up-conversion luminescence and temperature-sensing of GdVO₄:Ln³⁺ with dual-wavelength excitation

Abstract

There exists a tendency in the research of up-conversion materials to shift the excitation from 980 nm to multiple excitation wavelengths.

Structural extension of 2D complexes to 3D complexes and their applications

“…It is difficult to capture light effectively because of the limit of the 4f-4f spin-forbidden transition. One of the traditional and efficient methods for solving this problem is to combine lanthanide ions with ligands [38][39][40]. The combination of lanthanide ions and POMs has become the focus of current research because of their properties, especially photoluminescence.…”

Enhanced two-step two-frequency upconversion luminescence in a core/shell/shell nanostructure

“…Many excellent works on TSTF UCNPs have been reported [37][38][39][40][41] . For example, Chen et al 37 demonstrated that enhanced UCL intensity in NaYF 4 :1%Er nanoparticles were realized by 790 & 1520 nm excitation.…”

“…Li et al 38 demonstrated that enhanced red emission in Gd 2 MoO 6 :Er/Yb nanoparticles co-doped WO 6 6and La 3+ were realized by 980 & 1550 nm excitation. Guo et al 39 demonstrated that enhanced emission intensity in GdVO 4 :Yb/Er nanoparticles doped with Lu 3+ , Y 3+ and PO 4 3− ions was realized by 980 & 1550 nm excitation. However, TSTF UCNPs often surfer from low luminescent efficiency [42][43][44] , attributing to the concentration quenching and surface defects [45][46][47][48][49][50] , which partly restrict the further applications in 3-D display.…”

“…39 showed that enhanced emission intensity in GdVO 4 :Yb/Er nanoparticles doped with Lu 3+ , Y 3+ and PO 4 3À ions was achieved by 980 & 1550 nm excitation. However, TSTF UCNPs often suffer from low luminescent efficiency,…”

“…[37][38][39][40][41] For example, Chen et al37 demonstrated that enhanced UCL intensity in NaYF 4 :1%Er nanoparticles was achieved by 790 & 1520 nm excitation. Li et al 38 demonstrated that enhanced red emission in Gd 2 MoO 6 :Er/Yb nanoparticles co-doped WO 6 6À and La 3+ was achieved by 980 & 1550 nm excitation.…”