Haiming Cheng

ORCID: 0000-0001-7934-1294
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About
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Research Areas
  • Luminescence Properties of Advanced Materials
  • Perovskite Materials and Applications
  • Inorganic Fluorides and Related Compounds
  • Advanced Photocatalysis Techniques
  • Ga2O3 and related materials
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Solid-state spectroscopy and crystallography
  • Gas Sensing Nanomaterials and Sensors
  • Metal-Organic Frameworks: Synthesis and Applications
  • Microwave Dielectric Ceramics Synthesis
  • Dental Implant Techniques and Outcomes
  • Radiation Detection and Scintillator Technologies
  • Silicone and Siloxane Chemistry
  • Crystal Structures and Properties
  • Organic Light-Emitting Diodes Research
  • Luminescence and Fluorescent Materials
  • Marine Biology and Environmental Chemistry
  • Anesthesia and Neurotoxicity Research
  • Optical properties and cooling technologies in crystalline materials
  • Polyoxometalates: Synthesis and Applications
  • Mercury impact and mitigation studies
  • Analytical chemistry methods development
  • Atomic and Subatomic Physics Research
  • Ammonia Synthesis and Nitrogen Reduction

State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
2022-2024

Jilin University
2022-2024

Changchun University of Science and Technology
2017-2019

Transition-metal tetravalent manganese ions (Mn4+) as luminescence center of red phosphors have drawn much attention owing to their broad-band absorption extended from UV blue regions and narrow red-emissive band. In the present work, a series Mn4+-doped BaGeF6 were obtained via hydrothermal method. X-ray powder diffraction, energy-dispersive spectrometer, scanning electron microscope, photoluminescence spectra employed determine crystal structure, composition, morphology, properties all...

10.1021/acs.inorgchem.8b00944 article EN Inorganic Chemistry 2018-08-03

Metal halide hybrids with thermally induced fluorescence transition have the potential to be utilized as next generation of smart materials in optoelectronic devices. However, fabrication thermochromic simultaneously reversible and lower temperatures is still a challenge. Herein, we present novel one-dimensional (1D) organic-inorganic lead chloride hybrid (TPA)PbCl3-Green (TPA = tetrapropylammonium) single crystal that exhibits green emission up 30% photoluminescence quantum yield (PLQY). It...

10.1021/acs.inorgchem.2c03384 article EN Inorganic Chemistry 2022-12-07

The truncated octahedron shaped K<sub>2</sub>NaAlF<sub>6</sub>:Mn<sup>4+</sup>was prepared<italic>via</italic>hydrothermal route, which emits red light under blue radiation. Warm WLEDs fabricated by the obtained phosphor show lower color temperature and higher rendering index.

10.1039/c7ra09671b article EN cc-by-nc RSC Advances 2017-01-01

Zero-dimensional (0D) metal halide perovskites (MHPs) have attracted much attention due to their unique crystal and electronic structure. Drastically different from three-dimensional (3D) CsPbCl3 analogues, 0D exhibit broadband emission spectra of self-trapped excitons (STEs) with a large Stokes shift high exciton binding energy. However, luminescent efficiencies are lower than those the 3D ones. Herein, for first time, we successfully synthesized Sn2+-doped Rb4CdCl6 an at 485 nm by simple...

10.1021/acs.jpcc.2c08483 article EN The Journal of Physical Chemistry C 2023-02-13

A novel type polygonal structure red emission Elpasolite-type hexafluorides (NH4)2NaInF6:Mn4+ phosphor is successfully synthesized by hydrothermal and coprecipitation methods. The samples exhibit two typical absorption bands located at the ultraviolet-visible (369 nm) blue light area (470 emit bright centered 633 nm with high color purity. Powder X-ray diffraction (XRD) has been used to demonstrate phase purity crystal of synthesized. corresponding surface morphology composition have...

10.1039/c8dt04690e article EN Dalton Transactions 2018-12-19

An orange-yellow phosphor Sb 3+ : (CH 3 NH ) 4 InCl 6 ·Cl was prepared via a mechanical ball-milling method. -doped able to emit orange light (∼607 nm) under UV excitation, and the PLQY is as high 67.72%.

10.1039/d2nj03090j article EN New Journal of Chemistry 2022-01-01

Low-dimensional organic-inorganic hybrid halides, as an important branch of metal halide materials, have attracted much attention due to their excellent photoelectric properties. Herein, we designed one new cadmium chloride [C5H14NO]CdCl3 based on combinations the d10 cation (Cd2+) and choline molecules. single crystals belong orthorhombic Pna21 space group show a one-dimensional (1D) structure with distorted [CdCl5O]5- octahedra. The second harmonic generation (SHG) response exhibits...

10.1039/d2dt03697e article EN Dalton Transactions 2022-12-17

The white light-emitting diodes fabricated by mixing GaN chips with yellow phosphor (Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sup>3+</sup>) and red phosphors (K<sub>2</sub>LiGaF<sub>6</sub>:Mn<sup>4+</sup>) exhibit good performance lower color temperature higher rendering index.

10.1039/c8ce00197a article EN CrystEngComm 2018-01-01

Herein, a new organic cationic matrix [N(CH3)4]3MoO3F3 suitable for Mn4+ doping was constructed. Due to the large steric hindrance of N[CH3]4+ (TMA), charge compensation defects can be effectively prevented in heterovalent Mn4+-doping process, and high IQE (91.05%) obtained. Through cation co-doping strategy, Mg2+/Zn2+/Li+ cations were introduced into Mo6+ site, which improved crystallinity reduced energy losses, so as improve luminescence intensity, QE, thermal stability, water stability...

10.1039/d3dt01860a article EN Dalton Transactions 2023-01-01

Scintillators have garnered heightened attention for their diverse applications in medical imaging and security inspection. Nonetheless, commercial scintillators encounter challenges with costly rare-earth metals toxic elements like thallium (Tl), driving the need sustainable, cost-effective, eco-friendly alternatives to meet contemporary X-ray detection demands. This study focuses on exploring potential of Cu+-doped Rb2AgI3 as an effective metal halide (MH) scintillator. One-dimensional...

10.1021/acsomega.4c04077 article EN cc-by-nc-nd ACS Omega 2024-06-20
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