Upconversion mechanism for two-color emission in rare-earth-ion-dopedZrO2nanocrystals

Impact of Ce4+ ion on microstructure and luminescence character of Ho3+/Yb3+ co-doped ZrO2 nanocrystal

“…The pure ZrO 2 lattice is usually tetragonal structure. When an amount of rare earth ions is introduced, only cubic phase can be observed [11]. In different crystal field, the luminescence character of rare earth ions is different.…”

Luminescence Enhancement Mechanism of Lanthanide-Doped Hybrid Nanostructures Decorated by Silver Nanocrystals

“…Ln-doped NCs show unique luminescent properties, such as large anti-Stokes shift, long excited state lifetimes, and narrow luminescence band widths [6,7]. Several strategies have been proposed for improving their luminescence efficiency including the introduction of co-dopant ions/sensitizers, surface modification of nanoparticles (NPs), local symmetry and interaction adjustment [8][9][10][11][12], and other strategies for increasing the luminescence emission efficiency of Ln-doped NCs [2,4,5].…”

Synthesis and upconversion luminescent properties of Er3+ doped and Er3+–Yb3+ codoped GdOCl powders

“…In the last few decades rare-earth doped upconversion luminescent materials have attracted great interest for their potential applications in many areas such as all-solid compact lasers, nearinfrared quantum counting devices, optical data storage and fluorescent labels for sensitive detection of bimolecular [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Optical properties of trivalent lanthanide ions such as Er 3+ in powders [1][2][3][4][5], crystals [17,18], ceramics [19][20][21] and glasses [16,22] in different host matrices have been extensively researched.…”

“…Optical properties of trivalent lanthanide ions such as Er 3+ in powders [1][2][3][4][5], crystals [17,18], ceramics [19][20][21] and glasses [16,22] in different host matrices have been extensively researched. Owing to low phonon energy and high upconversion efficiency [23,24], fluorides are the most widely investigated host materials for upconversion luminescence.…”