Exceptional low-temperature fluorescence sensing properties in novel KBaY(MoO₄)₃:Yb³⁺,Ho³⁺ materials based on FIR of Ho³⁺ transitions ⁵F₅₍₁₎ → ⁵I₈/⁵S₂ → ⁵I₈

Abstract

In this report, a series of novel KBaY(MoO4)3:Yb3+,Ho3+ (KBYMO:Yb3+,Ho3+) with intense up-conversion (UC) luminescence properties, were synthesized using a high-temperature solid-state reaction method. Upon 975 nm near infrared (NIR) laser...

Unique excitation power density and pulse width-dependent multicolor upconversion emissions of Y2Mo4O15:Yb3+,Ho3+ for anti-counterfeiting and information encryption applications

“…The characteristic sharp green and red emission peaks are observed, which can be attributed to 5 S 2 , 5 F 4 → 5 I 8 and 5 F 5 → 5 I 8 transitions of Ho 3+ ions, respectively. 27 When the excitation power density increases from 0.5 to 100 W cm −2 , although the position of the emission peaks does not shift, the upconversion PL color shows an obvious change from red to yellow and then to green. The corresponding R/G ratios of the Y 2 Mo 4 O 15 : 40%Yb 3+ ,2%Ho 3+ microcrystal under different excitation power densities are shown in Fig.…”

Fabrication and surface hydrophobic modification of Y2O3:Eu3+phosphors

“…1 Additionally, they can be applied in cathode ray tubes, field emission displays, liquid crystal displays, plasma display panels, temperature sensing devices, and solid-state lasers, among others. 2–4 For example, Li et al 5 synthesized novel KBaY(MoO 4 ) 3 :Yb 3+ , Ho 3+ (KBY–MO:Yb 3+ , Ho 3+ ) with strong upconversion (UC) fluorescence properties by high temperature solid phase reaction, and they have studied the temperature (53–293 K) dependence of this material, showing that it has a good application prospect as a key component material of low temperature fluorescence thermometers. Besides, rare-earth-doped luminescent materials can also be added to plastic, paint, glaze, ink, chemical fibers, and other media, using their unique luminescence properties to produce light products.…”

Excellent upconversion luminescence and temperature sensing performance of CdMoO4:Er3+,Yb3+ phosphors

“…Rare-earth doped upconversion (UC) luminescent materials have been attracting much attention due to their potential applications in anti-counterfeiting technology, biomedical imaging and non-contact optical thermometry. 12,13 In particular, in recent years, Er 3+ and Yb 3+ co-doped upconversion luminescent materials have generated a great deal of interest in the field of temperature sensors because of their high luminescence intensity and sensitive thermally coupled energy levels. 14,15…”