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Noncontact fluorescence temperature detection systems have become a significant research focus. In this study, a new BaY(BO) phosphor co-doped with Er/Yb was successfully synthesized using a high-temperature solid phase method. The introduction of Yb as a sensitizer enhanced the luminescence properties of the BaY(BO) phosphor. The occupation of Er and Yb ions in the crystal lattice was analyzed in detail. The up-conversion luminescence and underlying mechanisms were explained by the double logarithmic relationship between the luminescence intensity and pump power. The temperature sensitivity of the phosphors was explored in the range of 333-513 K using fluorescence intensity ratio technology based on the two green peaks (thermal coupling level Er). The temperature sensing reached 1.44 × 10 K at 333 K, indicating that BaY(BO):Er,Yb phosphors have potential applications as temperature sensors.
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http://dx.doi.org/10.1039/d5ra01277e | DOI Listing |
RSC Adv
August 2025
GdS Optronlab, Department of Condensed Matter Physics, University of Valladolid LUCIA Building, Paseo de Belen 19 Valladolid 47011 Spain.
The integration of down-conversion (DC) and up-conversion (UC) photoluminescence mechanisms has attracted significant attention for applications in optical thermometry and solid-state lighting. Combining both emission processes within a single material enables dual-mode temperature sensing, offering enhanced flexibility and precision. In this study, we report a pioneering investigation of the dual-mode thermometric performance of LiCaLa(MoO) phosphors co-doped with Er (0.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
January 2026
School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zi Bo 255000, PR China. Electronic address:
Optical information encryption technology based on the emission color from rare earth ions shows great potential with the information security problems increasing. In this work, the up-conversion processes of the core-shell structured Er@Y@Tm phosphors can be precisely controlled by modulating the excitation conditions and temperature. The luminescent centers, Er and Tm, are spatially separated in different layers of the core-shell structure, enabling wavelength responsive pure red and blue emission color under 980 and 1550 nm laser excitation, respectively.
View Article and Find Full Text PDFAdv Healthc Mater
August 2025
Faculty of Medicine and Health Technology, Tampere University, Korkeakoulunkatu 3, Tampere, 33720, Finland.
Despite significant efforts in developing novel biomaterials to regenerate tissue, only a few of them have successfully reached clinical use. It has become clear that the next generation of biomaterials must be multifunctional. Smart biomaterials can respond to environmental or external stimuli, interact in a spatial-temporal manner, and trigger specific tissue/organism responses.
View Article and Find Full Text PDFACS Appl Mater Interfaces
August 2025
Key Laboratory of Biophysics and Bioinformatics of Inner Mongolia Autonomous Region at Inner Mongolia University, School of Physical Science and Technology, Inner Mongolia University, 235 West University Road, Hohhot, Inner Mongolia 010021, China.
SrTiO exhibits promising potential in both thermoelectric and optical properties. However, research on these two properties has consistently been carried out in two relatively independent fields. In this work, the regulatory mechanisms of thermoelectric and optical properties were proposed based on photon-excited electron-phonon interactions.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
July 2025
State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
New diagnostic tools for accurately detecting extremely low levels of protein biomarkers in the bloodstream are essential for a wide range of clinical applications. We develop a singlet-oxygen activated up-conversion luminescence assay (SOLA) that enables ultrasensitive digital immunometric detection of protein biomarkers in homogenous format with no wash steps. This approach designs a pair of labeled antibodies, one labeled with a singlet-oxygen (O) nanogenerator of porphyrin-metal organic framework (pMOF) and the other tagged using an upconversion nanoparticle (UCNP) nanoreporter with luminescence caged by O-cleavable quenchers.
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