A5024902275- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Radiation Detection and Scintillator Technologies
- Luminescence and Fluorescent Materials
- Advanced Photocatalysis Techniques
- Gas Sensing Nanomaterials and Sensors
- Glass properties and applications
- Solid State Laser Technologies
- Optical properties and cooling technologies in crystalline materials
- Solid-state spectroscopy and crystallography
- Nanoplatforms for cancer theranostics
- Microwave Dielectric Ceramics Synthesis
- Ammonia Synthesis and Nitrogen Reduction
- Ga2O3 and related materials
- Photoacoustic and Ultrasonic Imaging
- Advanced Chemical Sensor Technologies
- Inorganic Fluorides and Related Compounds
- bioluminescence and chemiluminescence research
- Crystal Structures and Properties
- Transition Metal Oxide Nanomaterials
- Conducting polymers and applications
- Organic Light-Emitting Diodes Research
- 2D Materials and Applications
- Chemical Synthesis and Characterization
- Photocathodes and Microchannel Plates
Northwest University
2016-2025
Jiangxi Normal University
2022-2025
Dalian University of Technology
2025
Northeastern University
2024
Fuzhou University
2024
Photonics (United States)
2014-2021
China International Science and Technology Cooperation
2014-2019
China XD Group (China)
2014-2019
Macquarie University
2016-2017
Anhui East China Institute of Optoelectronic Technology (China)
2014-2015
Mn4+-activated oxide phosphors La(MgTi)1/2O3 (LMT) with far-red emitting were prepared via a sol–gel route. The structures of samples determined by X-ray diffraction (XRD) and Reitveld refinement. occupied sites Mn4+ (d3 electronic configuration) in host confirmed ab initio calculations which the system has lower formation energy, stable lattice structure, strong bonding state as enters into Ti site. luminescent properties Mn4+-doped investigated; emit light centered at 708 nm ultraviolet...
Abstract Noninvasive lanthanide‐doped optical thermometers based on fluorescent intensity ratio (FIR) technique have emerged as promising noncontact tools for detecting the inaccessible objects at different scales. Currently, theoretical and experimental investigations of various influential factors thermal performances luminescence become one hotspots to develop highly sensitive thermometers. On other hand, near‐infrared (NIR) light‐responsive nanothermometers with deep‐tissue penetration...
Yb3+/Er3+ codoped Ba5Gd8Zn4O21 up-conversion (UC) phosphors with tunable emission were synthesized using a facile sol–gel method. UC spectra are composed of green from 2H11/2/4S3/2 → 4I15/2 transitions and red 4F9/2 transition Er3+ ion the excitation 980 nm laser diodes. Modulation emitting color to could be achieved by adjusting dopant concentrations or pulse width laser. The mechanism former strategy was figured out through analyzing visible near-infrared (NIR) down-conversion together...
Eu2+ activated fluorophosphate Ba3GdNa(PO4)3F (BGNPF) with blue and red double-color emitting samples were prepared via a solid-state method in reductive atmosphere. Their crystal structure cationic sites identified light of X-ray diffraction pattern Rietveld refinement. Three different Ba2+ sites, coordinated by six O atoms referred to as Ba1, two F five Ba2, Ba3, partially substituted Eu2+. Photoluminescence emission (PL) excitation (PLE) spectra phosphor BGNPF:Eu2+ along the lifetimes...
An optical temperature sensor and heater based on Yb<sup>3+</sup>/Tm<sup>3+</sup> co-doped Ba<sub>5</sub>Gd<sub>8</sub>Zn<sub>4</sub>O<sub>21</sub> phosphors.
Investigation of the unclear influential factors to thermal sensing capability is only way achieve highly sensitive thermometry, which greatly needed meet growing demand for potential applications. Here, effect from phonon energy a matrix on sensitivity upconversion (UC) microthermometers elaborately discussed using controllable method. Uniform truncated octahedral YF3:Er3+/Yb3+ microcrystals were prepared by hydrothermal approach, and phase transformation YF3 YOF Y2O3 with nearly unchanged...
The emission mechanism and origin of the host Cr 3+ /Yb co-doped Ca 4 ZrGe 3 O 12 .
Abstract Cr 3+ activated near‐infrared (NIR) phosphors are getting unprecedented attention to fabricate the broad band NIR light emitting diodes (NIR‐LEDs) for nondestructive detection, bio‐imaging, and night vision. However, it remains a major challenge obtain ultrabroadband phosphor with excellent quantum yield (QY). Here, broadband Mg 7 Ga 2 GeO 12 :Cr (MGGO: ) ranging from 600 1300 nm an outstanding QY (93%) large full width of half maximum (FWHM = 226 nm) is developed, in which site...
Abstract Low-dimensional lead-free metal halide perovskites are highly attractive for cutting-edge optoelectronic applications. Herein, we report a class of scandium-based double perovskite crystals comprising antimony dopants that can generate multiexcitonic emissions in the ultraviolet, blue, and yellow spectral regions. Owing to zero-dimensional nature crystal lattice minimizes energy crosstalk, different excitonic states be selectively excited by ultraviolet light, X-ray irradiation,...
A three-band white light-emitting diode (LED) was fabricated using an InGaN-based blue LED chip that emits 460-nm light, and a green phosphor SrGa/sub 2/S/sub 4/ : Eu/sup 2+/ red Ca/sub 1-x/Sr/sub x/S emit 535-nm 615-nm emissions, respectively, when excited by light. When the operated in direct current (DC) 20 mA at room temperature, Commission Internationale de l'Eclairage chromaticity coordinate (x, y), color temperature Tc, rendering index Ra are calculated to be (0.3236, 0.3242), 5937 K,...
A class of Yb3+/Er3+ ion co-doped CaLa2ZnO5 (CLZ) novel up-conversion (UC) phosphors were synthesized by a sol–gel method. The crystal structure and the phase composition samples characterized X-ray diffraction (XRD). Under 980 nm excitation, UC spectra are composed three prominent emission bands centered at 524, 547 672 originating from 2H11/2 → 4I15/2, 4S3/2 4I15/2 4F9/2 electronic transitions Er3+ in green red regions, respectively. as function concentration dopants also investigated to...
The combination of real-time diagnosis and therapy in an YF<sub>3</sub>:Tm<sup>3+</sup>/Yb<sup>3</sup> up-converting platform with improved thermometry photo-thermal ability is achieved through optimizing doping dosages.
Realizing sensitive sub-tissue thermometry with a large signal-to-noise ratio <italic>via</italic> finely tailoring the local site symmetry in La<sub>2</sub>O<sub>3</sub>:Er<sup>3+</sup>/Yb<sup>3+</sup> nanospheres.
Ce 3+ /Pr codoped Li 2 SrSiO 4 ( LSS ) phosphors with blue, red, and near‐infrared NIR tri‐emission have been prepared via a high‐temperature solid‐state reaction method. Under the excitation of 200 to 400 nm near‐ultraviolet n ‐ UV ), photoluminescence PL spectra are composed visible two parts. The former exhibits blue red emission bands centered at around 428 from 5 d –4 f transition 611 1 D → 3 H Pr , those overlap photosynthesis action plants absorption chlorophylls carotenoids. While...
High sensitivity thermometer LuNbO<sub>4</sub>:Pr<sup>3+</sup>/Tb<sup>3+</sup> based on intervalence charge transfer transitions.
Eu<sup>3+</sup>-activated layered perovskite ionic conductor KGdTiO<sub>4</sub> red emitting phosphors to be used for ultraviolet based light diodes (LEDs) and field emission displays (FEDs) were successfully synthesized by a modified sol–gel method.
The realization of real-time and accurate temperature reading at subcutaneous level during the photothermal therapy (PTT) could maximally avoid collateral damages induced by overheating effects, which remains a formidable challenge for biomedical applications. Herein, 808 nm light-driven yolk-shell GdOF:Nd3+/Yb3+/Er3+@SiO2 microcapsules were developed with thermal-sensing heating bifunctions. Under excitation, sensitive thermometry was implemented monitoring thermoresponsive emission from...
Temperature dependence of the green UC luminescence spectra NaYTiO<sub>4</sub>: 0.14Yb<sup>3+</sup>, 0.05Er<sup>3+</sup> under 980 nm excitation (the are normalized to most intense emission peak at 551 nm) and temperature-dependent sensitivity for present sample.