Bright constant color upconversion based on dual 980 and 1550 nm excitation of SrF2:Yb3+, Er3+ and β-NaYF4:Yb3+, Er3+ micropowders― considerations for persistence of vision displays

Synthesis of SrF2:Yb:Er ceramic precursor powder by co-precipitation from aqueous solution with different fluorinating media: NaF, KF and NH4F

“…50 The synthesis methods developed are scalable 51 and can be used to obtain nanoparticles in industrial volumes. The nanoparticles obtained can be used to increase the efficiency of solar panels, 35,[52][53][54][55][56] in anticounterfeiting, 57 in the production of thin optical films for anti-reflective protective coatings on glass, 58 in 2D/3D monitors, 59 in bioimaging, 33 pressure and temperature sensors, 60 and in plastic sorting. 61 The physicochemical regularities revealed confirmed the possibility of synthesising precursor powders for laser ceramics using the method of precipitation from aqueous solutions.…”

Effect of the fluorinating agent type (NH4F, NaF, KF) on the particle size and emission properties of SrF2:Yb:Er luminophores

“…The compositions of the synthesized samples (Sr 0.96 Yb 0.02 Er 0.02 F 2.04 ; Sr 0.95 Yb 0.03 Er 0.02 F 2.05 ; Sr 0.935 Yb 0.050 Er 0.015 F 2.065 ) are based on solid solutions that have previously shown the highest quantum yields of up-conversion luminescence. 33,39–41 X-ray powder diffraction of the samples after high-temperature treatment at 600 °C shows that single-phase powders with a fluorite structure are formed without additional peaks corresponding to other phases (Fig. 1).…”

“…based on solid solutions that have previously shown the highest quantum yields of up-conversion luminescence. 33,[39][40][41] X-ray powder diffraction of the samples after high-temperature treatment at 600 1C shows that single-phase powders with a fluorite structure are formed without additional peaks corresponding to other phases (Fig. 1).…”

BaYb2 – xErxGe3O10 and BaY2 – 10yYb9yEryGe3O10: Luminescent Properties and Prospects for Applications in Remote Temperature Determination

“…Inorganic compounds doped with Er 3+ are attractive for a variety of applications. They can be used to create active media of solid-state lasers generating radiation with λ ex = 1.5 or 2.7 μm (the 4 I 13/2 → 4 I 15/2 and 4 I 11/2 → 4 I 13/2 transitions in Er 3+ ) [1][2][3] and as upconversion materials that allow one to convert infrared (IR) radiation into radiation with wavelengths in the visible range [4][5][6][7][8]. To increase the efficiency of upconversion luminophores, sensitizing ions (for example, Yb 3+ ) that are capable of more efficiently absorbing the infrared radiation energy of commercial light-emitting diodes and transferring it to Er 3+ ions are additionally introduced into the lattice of compounds.…”

“…To increase the efficiency of upconversion luminophores, sensitizing ions (for example, Yb 3+ ) that are capable of more efficiently absorbing the infrared radiation energy of commercial light-emitting diodes and transferring it to Er 3+ ions are additionally introduced into the lattice of compounds. The possibility of upconversion transformation of exciting radiation is widely used in solar cells and photovoltaic devices [9][10][11][12], in displays [5,6], as well as in microscopic studies of biological objects [13,14].…”