A5049290424- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Solid State Laser Technologies
- Luminescence and Fluorescent Materials
- Radiation Detection and Scintillator Technologies
- Glass properties and applications
- Quantum Dots Synthesis And Properties
- Photonic Crystals and Applications
- Optical properties and cooling technologies in crystalline materials
- Nanoplatforms for cancer theranostics
- Diamond and Carbon-based Materials Research
- Gas Sensing Nanomaterials and Sensors
- Silicon Nanostructures and Photoluminescence
- Microwave Dielectric Ceramics Synthesis
- Photorefractive and Nonlinear Optics
- Advanced biosensing and bioanalysis techniques
- Semiconductor materials and devices
- Nanowire Synthesis and Applications
- ZnO doping and properties
- Solid-state spectroscopy and crystallography
- Metal and Thin Film Mechanics
- Organic Light-Emitting Diodes Research
- Inorganic Fluorides and Related Compounds
- Ion-surface interactions and analysis
- Conducting polymers and applications
Zhengzhou University
2025
Dalian Maritime University
2016-2024
Zhejiang Yuexiu University
2022
Beijing Institute of Aeronautical Materials
2022
China Pharmaceutical University
2021
Inner Mongolia University
2020
Jilin University
2011-2017
State Key Laboratory on Integrated Optoelectronics
2011-2017
Jilin Medical University
2014-2015
State Council of the People's Republic of China
2014-2015
A universal J–O calculation method for phosphors was proposed and used NaYF 4 :Er 3+ /Yb .
Abstract Raising photoelectric conversion efficiency and enhancing heat management are two critical concerns for silicon-based solar cells. In this work, efficient Yb 3+ infrared emissions from both quantum cutting upconversion were demonstrated by adjusting Er concentrations, thermo-manage-applicable temperature sensing based on the luminescence intensity ratio of super-low thermal quenching levels was discovered in an /Yb co-doped tungstate system. The mechanism clearly decrypted as a...
The results of numerical simulations, optical emission spectroscopy (OES), and quadrupole mass spectrometry (QMS) inductively coupled Ar/CH4/H2 plasmas in the plasma enhanced chemical vapor deposition (PECVD) self-assembled vertically aligned carbon nanostructures (CNs) are presented. A spatially averaged (global) discharge model is developed to study densities fluxes radical neutrals charged species, effective electron temperature, methane conversion factor under various growth conditions....
Here we present the synthesis of core–shell structured hexagonal-phase NaYF4 : Yb3+,Er3+@Ag nanoparticles (NPs) and their unique bio-functional properties. The structure morphology NPs are confirmed by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning (SEM) Fourier transform infrared (FT-IR) measurements. They displayed both strong 2H11/2/4S3/2–4I15/2 (green) 4F9/2–4I15/2 (red) upconversion luminescence (UCL) photothermal transfer properties under excitation a...
Three-dimensional (3D) porous ZnO-CuO hierarchical nanocomposites (HNCs) nonenzymatic glucose electrodes with different thicknesses were fabricated by coelectrospinning and compared 3D mixed ZnO/CuO nanowires (NWs) pure CuO NWs electrodes. The structural characterization revealed that the HNCs composed of ZnO trunk (~200 nm), whose outer surface was attached small nanoparticles (NPs). Moreover, a good synergetic effect between confirmed. biosensing properties as prepared based on fluorine...
There has been great progress in the development of fluorescence biosensors based on quantum dots (QDs) for detection lead ions. However, most methods are detecting ions aqueous solution rather than human serum due to influence protein autofluorescence excited by visible light. Thus, we developed a novel resonance energy transfer (FRET) biosensor choosing upconversion NaYF4:Yb3+/Tm3+ nanoparticles as donor and CdTe QDs acceptor ion detection. It is first near infrared (NIR)-excited...
A core-shell structure with a NaYF4:Sm3+/Yb3+ core for photothermal conversion nanocalorifier and NaYF4:Er3+/Yb3+ shell as temperature probe potential applications in therapy (PTT) were synthesized by thermal decomposition technique of rare-earth oleate complexes. The optical reading-out property the NaYF4:Sm3+/Yb3+@NaYF4:Er3+/Yb3+ was systematically investigated it found that comparison pure particles, sensing performance did not become worse due to presence core. Furthermore, behavior...
Abstract The hosts with low maximum phonon energy (MPE) are preferred since the nonradiative consumption of luminescence centers in them low. Among MPE hosts, oxide ones more favored owing to their excellent stability and easy synthesis. In this work, optical spectroscopic properties BaGd 2 O 4 :Er 3+ phosphor were studied. host was observed from Eu sideband (PSB) spectrum Raman be 477 cm −1 which does not second fluoride hosts. refractive index, is indispensable for Judd–Ofelt calculation,...
Novel PMMA opal photonic crystal/NaYF4:Yb3+, Tm3+/Er3+ nanocrystal composites were fabricated and tremendous improvement in upconversion luminescence (UCL) was observed under infrared 980 nm excitation. They also explored to improve brightness of cell images.
The TiO<sub>2</sub>/NaYF<sub>4</sub>:Yb,Tm composite film represents an excellent long-time photostable upconversion sensor for the detection of avidin.
It is important to finely tune the upconversion (UC) properties through controlling size and structure of nanocrystals (UCNCs) improve their efficiency. Recently, it was reported that UC luminescence (UCL) intensity NaLuF4:Yb3+, Er3+ UCNCs could be tremendously improved compared most efficient NaYF4:Yb3+, under 980 nm excitation. In this paper, we first studied varied control phase transition NaREF4:Yb3+, (RE = Y, Lu) prepared by solvothermal method. Then, discussed if UCL universally over...
In this work, novel upconversion lanthanide oxyfluoride (LnOF:Yb3+, Er3+, Ln = La, Y, Gd) inverse opal photonic crystals (IOPCs) were successfully fabricated by the sol–gel method combined with polymethylmethacrylate (PMMA) template technique and modulation of stop band (PSB) on green emissions 2H11/2/4S3/2 → 4I15/2 for Er3+ ions systemically studied under 980 nm excitation. The results showed that LaOF IOPCs (annealed at 500 °C) cubic phase while GdOF YOF matrices rhombohedral phase,...
Usually, the optical transition properties of trivalent rare earth (RE) ions in transparent hosts can be quantitatively investigated framework Judd-Ofelt theory. A standard and commonly accepted calculation procedure based on absorption spectrum has already been established. However, it is hard to assess RE doped powdered film materials owing difficulty absolute measurements. In this work, we proposed a new route calculate parameters ion-doped any morphological shaped forms. method,...
YNbO4 phosphors with various Er3+ and Yb3+ concentrations were synthesized via a traditional high-temperature solid-state reaction method. Their crystal structure was investigated by means of X-ray diffraction (XRD) Rietveld refinements, it confirmed that the obtained samples exist in monoclinic phase. The concentration-dependent up-conversion (UC) luminescence studied under 1550 nm excitation. By inspecting dependence UC intensity on laser working current, found four-photon three-photon...
The optical transition properties of trivalent rare earth (RE3+) doped luminescent materials have received extensive attention. Judd-Ofelt theory is an effective tool for exploring the 4f-4f transitions lanthanides. aim this work to discover effect Er3+ concentration and different Ln3+ ions on parameters in LnOCl:Er3+ (Ln = Y, La, Gd) phosphors. Oxychloride phosphors were produced via a single displacement reaction technique. calculation procedure RE3+ powders was modified then adopted...
Defect passivation has been a promising route for enhancing the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs). Herein, defect inhibition in two‐step solution‐processed (FAPbI 3 ) 1− x (MAPbBr films via rationally designed zwitterionic ionic liquid (ZIL) with 4‐fluoro‐phenylammonium (4FB + as cations tetrafluoroborate (BF 4 − anions is demonstrated. First, 4FB BF can effectively fill vacancy defects caused by migrated organic A‐site cation halogen anion,...