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

Abstract

In this paper, Yb3+/RE3+ (RE=Er/Ho) co-doped Zn3Mo2O9 phosphors are synthesized by high temperature solid state reaction. Under 980 nm excitation, The upconversion(UC) luminescence thermal enhancement is obtained for Zn3Mo2O9:Yb3+/RE3+ phosphors....

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

“…[1][2][3] They can be applied in lighting, biological imaging, anti-counterfeiting, plant growth and optical thermometers. [4][5][6][7][8] In particular, an optical thermometer based on RE 3+ ion luminescence is used for non-contact temperature measurement in strong electromagnetic interference, highly corrosive environment in vivo, which possesses quick response, high spatial resolution and contact-less readout rates. [9][10][11][12] Generally, the upconversion (UC) and downshift (DS) luminescence radiations of RE 3+ ions could also be used to develop an optical thermometer.…”

Tailoring thermal expansion and luminescence thermometric performance of KMgScW3O12-based compounds

“…It is well known that upconversion luminescence (UCL) of RE 3+ doped materials can convert near-infrared light to visible light and even ultraviolet (UV) light, and they have a large application market in anti-counterfeiting, photodynamic therapy, and temperature sensing. 27 However, the use of luminescent materials is largely limited by thermal quenching (TQ), that is, the luminescence intensity decreases with increasing temperature. Therefore, maintaining or even enhancing the luminescence at high temperatures is of high technological importance.…”

Huge Thermal Enhancement of Surface-Dominant Quasi-2D Upconversion Nanoflakes

“…20 Recently, Liu et al proved that the negative thermal expansion of the Zn 3 Mo 2 O 9 :Yb 3+ /RE 3+ (RE = Er/Ho) host prompted thermal enhancement by improving the efficiency of energy transfer between the sensitizer and the activator. 21 Zi et al reported a Na 2 MoO 4 :Yb 3+ /Er 3+ nanoparticle with negative expansion coefficients (∼10 −5 Å/K −1 ) in the c-axis orientation. 22 As the temperature increases from 313 to 573 K, the distance between Yb 3+ and Er 3+ ions is thus shortened effectively, leading to high energy-transfer efficiency in Na 2 MoO 4 :Yb 3+ /Er 3+ nanoparticles.…”

“…Recently, Liu et al . proved that the negative thermal expansion of the Zn 3 Mo 2 O 9 :Yb 3+ /RE 3+ (RE = Er/Ho) host prompted thermal enhancement by improving the efficiency of energy transfer between the sensitizer and the activator . Zi et al reported a Na 2 MoO 4 :Yb 3+ /Er 3+ nanoparticle with negative expansion coefficients (∼10 –5 Å/K –1 ) in the c-axis orientation .…”