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Wyniki wyszukiwania dla: LUMINESCENCE

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Wyniki wyszukiwania dla: LUMINESCENCE

  • Luminescence properties of TeOx gels

    Dane Badawcze
    open access - seria: TeO2-based materials

    The DataSet contains the emission and excitation spectra of TeOx gels. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol.  The sol was obtained by vigorously stirring precursor solution at 50°C for 2h, then the temperature was raised...

  • The luminescence study of Sr2TiO4:Sm3+ coumpounds.

    Dane Badawcze
    open access

    A luminescent material based on the strontium orthotitanate (Sr2TiO4) matrix doped with 1% of a mole of samarium was obtained using the typical solid-state synthesis method under a neutral atmosphere of nitrogen. The sample was investigated using powder X-ray diffraction (XRD) and several luminescence techniques to study the phase composition, luminescence...

  • The luminescence study of Ca14Zn6Ga10−xMnxO35 coumpounds.

    Dane Badawcze
    open access

    Manganese in the pentavalent state (Mn 5+) is both rare and central in materials exhibiting narrow-band near-infrared (NIR) emission and is highly sought after for phosphor-converted light-emitting diodes as promising candidates for future miniature solid-state NIR light source. We develop the Ca 14 Zn 6 Ga 10−x Mn x O 35 (x = 0.3, 0.5, 1.0, 1.25, 1.5,...

  • Luminescence of TeO2:Eu thin films

    Dane Badawcze
    open access

    Tellurium dioxide doped by europium thin films were deposited by magnetron sputtering method and simultaneously heated at 200 oC. Presence of Eu ions and their valence states was confirmed by X-ray photoemission spectroscopy measurements. The structure of the films as well as the influence of europium dopant on crystalline structure of the films was...

  • Luminescence properties of TeOx-Dy gels

    Dane Badawcze
    open access - seria: TeO2-based materials

    The DataSet contains the emission and excitation spectra of TeOx-Dy gel. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. Next, the 5% mol of dysprosium ions were added, the nitrates were used as a source of rare-earth ions. The sol...

  • Luminescence properties of TeOx-Tb gels

    Dane Badawcze
    open access - seria: TeO2-based materials

    The DataSet contains the emission and excitation spectra of TeOx-Tb gel. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. Next, the 5% mol of terbium ions were added, the nitrates were used as a source of rare-earth ions. The sol was...

  • Luminescence properties of TeOx-Eu gels

    Dane Badawcze
    open access - seria: TeO2-based materials

    The DataSet contains the emission and excitation spectra of TeOx-Eu gels. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. Next, the 5% mol of europium ions were added, the nitrates were used as a source of rare-earth ions. The sol...

  • The luminescence study of SrAl11.88−xGaxO19:0.12Cr3+ coumpounds.

    Dane Badawcze
    open access

    Portable near-infrared (NIR) light sources are in high demand for applications in spectroscopy, night vision, bioimaging, and many others. Typical phosphor designs feature isolated Cr3+ ion centers, and it is challenging to design broadband NIR phosphors based on Cr3+–Cr3+ pairs. Here, we explore the solid-solution series SrAl11.88–xGaxO19:0.12Cr3+...

  • The chemical and mechanical pressure influence on chromium luminescence

    Dane Badawcze
    open access

    In this study, we aim to compare the changes in the luminescence properties of Ga2O3:Cr3+ modified by Al or Sc ion substitution (chemical pressure) and hydrostatic pressure. We find the same behavior for Ga2–xAlxO3:Cr3+ and different behavior for Ga2–xScxO3:Cr3+ in terms of the optical properties under chemical and mechanical pressure. We consider Al...

  • The luminescence study of Ga1.98–xAlxO3:0.02Cr3+ coumpounds.

    Dane Badawcze
    open access

    A chemical and mechanical pressure-induced photoluminescence tuning method was developed through structural evolution and hydrostatic pressure involving phase transition. A series of Ga1.98−xAlxO3:0.02Cr3+ phosphors were synthesized by collaborators from National Taiwan University. Structural evolution reveals a crystal phase change with the incorporation...

  • The luminescence study of Sr2−xSrxPN3:Eu2+ nitridophosphate.

    Dane Badawcze
    wersja 1.0 open access

    In this work, a series of Ca2−xSrxPN3:Eu2+ nitridophosphate phosphors through a solid-solution strategy involving a hot isostatic press was developed by collaborators from National Taiwan University. Unexpected dual emissions in the red and infrared regions are observed, different from previous research results. The unique change in red and near-infrared...

  • The luminescence study of Sr3−xBaxP5N10Cl: Eu2+ nitridophosphate.

    Dane Badawcze
    open access

    A series of zeolitic nitridophosphate phosphors Sr2.91−xBaxP5N10Cl:0.09Eu2+ was synthesized by our collaborators from National Taiwan University using a hot isostatic press. Detailed thermal properties were determined using the temperature-dependent photoluminescence intensity and decay time. This research provides a different perspective to analyze...

  • Luminescence properties of TeOx-Eu thin films

    Dane Badawcze
    open access - seria: TeO2-based materials

    The DataSet contains the emission and excitation spectra of TeOx-Eu thin films. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. Next, the 5% mol of europium ions were added, the nitrates were used as a source of rare-earth ions. The...

  • Luminescence properties of TeOx-Tb thin films

    Dane Badawcze
    open access - seria: TeO2-based materials

    The DataSet contains the emission and excitation spectra of TeOx-Tb thin films. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. Next, the 5% mol of terbium ions were added, the nitrates were used as a source of rare-earth ions. The...

  • Luminescence properties of TeOx-Dy thin films

    Dane Badawcze
    open access - seria: TeO2-based materials

    The DataSet contains the emission and excitation spectra of TeOx-Dy thin films. The material was obtained by the sol-gel method.  The starting solution was prepared by mixing telluric acid (precursor) with thetraetylene glycol, water, and ethanol. Next, the 5% mol of dysprosium ions were added, the nitrates were used as a source of rare-earth ions....

  • The luminescence study of CsPbI3 nanoparticles embedded in Cs4PbI6 crystals.

    Dane Badawcze
    open access

    Cs4PbI6, as a rarely investigated member of the Cs4PbX6 (X is a halogen element) family, has been successfully synthesized atlow temperatures by collaborators from National Taiwan University. Strong red to near-infrared (NIR) emission properties have been detected, and its optical emission centers have been identified to be numerous embedded perovskite-type...

  • The luminescence study ofNaK2Li[Li3SiO4]4:Eu coumpounds.

    Dane Badawcze
    open access

    Narrowband green phosphors with high quantum efficiency are required for backlighting white light-emitting diode (WLED) devices. Materials from the A[Li3SiO4]4:Eu2+ family have recently been proposed as having superior properties to industry-standard β-SiAlON green phosphors. Here, we show that a cheap, easily synthesized host NaK2Li[Li3SiO4]4 (NKLLSO)...

  • The luminescence study of (C10H16N)2MnBr4 Organic–Inorganic Hybrid

    Dane Badawcze
    open access

    Organic–inorganic hybrid metal halides have recently attracted attention in the global research field for their bright light emission, tunable photoluminescence wavelength, and convenient synthesis method. This study reports the detailed properties of (C10H16N)2MnBr4, which emits bright green light with a high photoluminescence quantum yield. Results...

  • The luminescence study of Bi-doped Cs2AgInCl6 double perovskite.

    Dane Badawcze
    open access

    Here, we report a halide precursor acid precipitation method to synthesize Cs2AgIn1−xBixCl6 (x = 0, 0.02, 0.04, 0.08, 0.16, 0.32, 0.64, and 1) microcrystals. Cs2AgInCl6 and Bi derivative double perovskites show broadband white light emission via self-trapped excitons (STEs) and have achieved the highest internal quantum efficiency of up to 52.4% at...

  • The luminescence study ofNaK2Li[Li3SiO4]4:Ce coumpounds.

    Dane Badawcze
    open access

    Phosphors with a rigid and symmetrical structure are urgently needed. The alkali lithosilicate family (A[Li3SiO4]) has been extensively studied with a narrow emission band due to its unique cuboid-coordinated environment and rigid structure. However, here we demonstrate for the first time Ce-doped NaK2Li[Li3SiO4]4 phosphors with a broad emission band,...