Guotao Xiang

ORCID: 0000-0003-3587-6654
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Research Areas
  • Luminescence Properties of Advanced Materials
  • Perovskite Materials and Applications
  • Optical properties and cooling technologies in crystalline materials
  • Gas Sensing Nanomaterials and Sensors
  • Advanced Photocatalysis Techniques
  • Solid State Laser Technologies
  • Radiation Detection and Scintillator Technologies
  • Glass properties and applications
  • Supercapacitor Materials and Fabrication
  • Nanoplatforms for cancer theranostics
  • Luminescence and Fluorescent Materials
  • Lanthanide and Transition Metal Complexes
  • Inorganic Fluorides and Related Compounds
  • Electrocatalysts for Energy Conversion
  • Advancements in Battery Materials
  • Advanced battery technologies research
  • Microwave Dielectric Ceramics Synthesis
  • Solid-state spectroscopy and crystallography
  • Magnetism in coordination complexes
  • Photoacoustic and Ultrasonic Imaging
  • Transition Metal Oxide Nanomaterials
  • Photorefractive and Nonlinear Optics
  • Metal-Organic Frameworks: Synthesis and Applications
  • Acoustic Wave Resonator Technologies
  • Nanocluster Synthesis and Applications

Chongqing University of Posts and Telecommunications
2017-2025

University of Electronic Science and Technology of China
2024

National Research Tomsk State University
2024

Tomsk Polytechnic University
2024

University of Jinan
2019-2021

Chongqing University
2019-2021

Chinese Academy of Sciences
2014-2015

Changchun Institute of Optics, Fine Mechanics and Physics
2014-2015

University of Chinese Academy of Sciences
2014-2015

Abstract Near‐infrared phosphor‐converted light‐emitting diodes (NIR pc‐LEDs) have promising applications in food analysis, night vision imaging, and biological probes. Developing NIR phosphors with broadband emission high efficiency has attracted immense interest. Herein, a novel phosphor Ca 2 LuScAl Si O 12 :Cr 3+ (CLSAS:Cr ) is reported for the first time. Under excitation of 442 nm light, CLSAS:Cr shows from 600 to 900 full width at half maximum (FWHM) 142 nm, benefiting emissions two Cr...

10.1002/adom.202202049 article EN Advanced Optical Materials 2022-10-26

Ultrasensitive temperature sensing is realized through non-thermally coupled energy levels to overcome gap constraints.

10.1039/d3qi02625f article EN Inorganic Chemistry Frontiers 2024-01-01

In this paper, BaY2O4:Yb3+/Er3+, a high efficient red upconversion (UC) material, is first utilized as an optical thermometer in the biological window, accomplished through fluorescence intensity ratio (FIR) of thermally coupled Stark sublevels 4F9/2 (FIR(654/663)). The maximum absolute sensitivity FIR(654/663)) 0.19% K–1 at 298 K, which much higher than most previous reports about FIR-based temperature sensors located windows. More importantly, groove FIR(654/663) for thermometry nicely...

10.1021/acs.inorgchem.0c01543 article EN Inorganic Chemistry 2020-07-17

The optical thermometry properties of LuVO4:Yb3+/Er3+@SiO2 nanoparticles (NPs) are studied in detail. In order to avoid the overheating effect for biological tissue caused by 980 nm radiation, 915 is employed as excitation wavelength investigate upconversion (UC) and as-prepared NPs. visible region, fluorescence intensity ratio (FIR) 2H11/2 4S3/2 levels Er3+ utilized measure temperature. relative sensitivity SR this case can be written 1077/ T2, which higher than that β-NaYF4:Yb3+/Er3+ NPs,...

10.1021/acs.inorgchem.9b01229 article EN Inorganic Chemistry 2019-05-30

A series of lanthanide organic complexes, namely, [Ln2PDC3(H2O)3]H2O (Ln = Eu, Tb, Eu xTb2- x, H2PDC: pyridine-3,5-dicarboxylic acid), were synthesized via hydrothermal method. Eu-PDC was characterized by single-crystal X-ray diffraction. The powder diffraction, Fourier transform infrared spectra, and thermogravimetric analysis illustrate that Eu-PDC, Tb-PDC, x-PDC complexes are isostructural. All the exhibit strong emission even though water molecules coordinated in structure. Tunable color...

10.1021/acs.inorgchem.8b03319 article EN Inorganic Chemistry 2019-02-27

A strategy of optical temperature sensing was developed by using various thermal quenching Mn4+ and Eu3+ for double perovskite tellurite phosphor in thermometers. Herein, SrGdLiTeO6 (SGLT): Mn4+,Eu3+ phosphors were synthesized a high-temperature solid-state reaction method. The temperature-dependent emission spectra indicated that two distinguishable peaks originated from exhibited significantly diverse responses. Therefore, thermometers with dual-mode mechanism designed employing...

10.1364/oe.409242 article EN cc-by Optics Express 2020-10-18

Effective photothermal conversion is realized with NaScF<sub>4</sub>: Yb<sup>3+</sup>/Er<sup>3+</sup>/Mn<sup>2+</sup>@NaScF<sub>4</sub>@SiO<sub>2</sub>@Cu<sub>2</sub>S nanoparticles along high resolution optical thermometry in real time.

10.1039/d0nr09115d article EN Nanoscale 2021-01-01

Fluorescence intensity ratio technology based on the thermally coupled energy levels of Er<sup>3+</sup> is a promising strategy for optical thermometry.

10.1039/d0dt03100c article EN Dalton Transactions 2020-01-01

Nowadays, the construction of photothermal therapy (PTT) agents integrated with real-time thermometry for cancer treatment in deep tissues has become a research hotspot. Herein, an excellent conversion material, BaY2O4: Yb3+/Nd3+, assembled optical is developed successfully. Ultrasensitive temperature sensing implemented through fluorescence intensity ratio thermally coupled Nd3+: 4Fj (j = 7/2, 5/2, and 3/2) maximal absolute relative sensitivity 68.88 3.29% K-1, respectively, which surpass...

10.1021/acs.inorgchem.2c00432 article EN Inorganic Chemistry 2022-03-25

The high-sensitivity and wide-temperature-range dual-mode optical thermometry for novel double perovskite SrLaLiTeO 6 :Mn 4+ ,Dy 3+ phosphor was exploited. Notably, the relative sensitivity ( S R ) values can be manipulated by different excitation wavelength.

10.1039/d1dt01147b article EN Dalton Transactions 2021-01-01

Lead-free double perovskite materials have attracted lots of interest because they can be doped with luminescence activators to modify their optical characteristics and improve photoluminescence performances.

10.1039/d3tc04453j article EN Journal of Materials Chemistry C 2024-01-01

Rare earth-doped Ba3La(VO4)3 phosphors with tunable emitting colors were firstly explored and their photoluminescence properties systematically investigated. The experimental results show that the exhibit high-brightness self-activated emission enable us to sensitize luminescence of rare earth activators. Under near-ultraviolet (UV) excitation, both broadband from VO43- groups sharp peak emissions Eu3+ ions are observed in Ba3La(VO4)3:Eu3+ phosphors. Modulation color green red can be...

10.1039/c9dt01917k article EN Dalton Transactions 2019-01-01

Abstract A conventional high temperature solid state method was utilized to prepare CaO‐Y 2 O 3 , which is a potential candidate for manufacturing crucible material melt titanium and alloys with low cost. Meanwhile, Yb 3+ ions Er were selected as the sensitizers activators respectively dope into aimed at providing real‐time optical thermometry during preparation process of realized using fluorescence intensity ratio (FIR) technology. The results reveal that measurement precision can be...

10.1111/jace.16939 article EN Journal of the American Ceramic Society 2019-12-04
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