Characterization of ZnWO_4 Raman crystal

Wang, Xin; Fan, Ze; Yu, Haohai; Zhang, Huaijin; Wang, Jing

doi:10.1364/ome.7.001732

Cited by 19 publications

(11 citation statements)

References 24 publications

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“…The ZnWO 4 single crystal has been well known for a long time. Its growth technology by Czochralski is well developed and allows obtaining large, high-quality boules [ 1 , 2 , 3 , 4 , 5 ]. This crystal has better thermal conductivity [ 1 ] and crack resistance [ 6 , 7 ] than many other tungstate and molybdate crystals.…”

Section: Introductionmentioning

confidence: 99%

Influence of Accidental Impurities on the Spectroscopic and Luminescent Properties of ZnWO4 Crystal

et al. 2023

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Special techniques for deep purification of ZnO and WO3 have been developed in this work. A ZnWO4 single crystal has been grown by the Czochralski method using purified ZnO and WO3 chemicals, along with the ZnWO4 crystal-etalon, which has been grown at the same conditions using commercially available 5N ZnO and WO3 chemicals. The actual accidental impurities compositions of both the initial chemicals and the grown crystals have been measured by inductively coupled plasma mass-spectrometry. A complex of comparative spectroscopic studies of the crystals has been performed, including optical absorption spectra, photo-, X-ray-, and cathodoluminescence spectra and decay kinetics, as well as the photoluminescence excitation spectra. The revealed differences in the measured properties of the crystals have been analyzed in terms of influence of the accidental impurities on these properties.

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Section: Introductionmentioning

confidence: 99%

Influence of Accidental Impurities on the Spectroscopic and Luminescent Properties of ZnWO4 Crystal

et al. 2023

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“…ZnWO 4 has been extensively used as a material for X-ray scintillators. , The reported light yield of ZnWO 4 (7000–9500 Ph/MeV) − is higher than that of the commercialized Bi 4 Ge 3 O 12 . In contrast, ZnWO 4 has lower emission intensity than recently reported inorganic scintillating and perovskite materials. , The perovskite scintillators are severely restricted due to their vulnerability to moisture and heat. , Furthermore, because ZnWO 4 has a much lower melting point than other inorganic scintillating materials, it can be efficiently used in the thermal evaporation method. , Additionally, ZnWO 4 has a high density (ρ = 7.87 g/cm 3 ), short decay time, high stability, and low cost. ,− Since ZnWO 4 has a high X-ray absorption capability, , it can be used in thin-film scintillators. There is a growing body of research on fabricating transparent ceramic thin films using thermal evaporation with sintering. − The thermal evaporation method is an efficient approach for conveniently depositing thin and uniform films on complex structures. − The main purpose of this study was to demonstrate that nano-polycrystalline ZnWO 4 thin-film scintillators can be utilized in high-resolution X-ray imaging.…”

Section: Introductionmentioning

confidence: 99%

“…39,40 be efficiently used in the thermal evaporation method. 41,42 Additionally, ZnWO 4 has a high density (ρ = 7.87 g/cm 3 ), short decay time, high stability, and low cost. 32,43−45 Since ZnWO 4 has a high X-ray absorption capability, 44,46 it can be used in thin-film scintillators.…”

Section: Introductionmentioning

confidence: 99%

A Transparent Nano-Polycrystalline ZnWO₄ Thin-Film Scintillator for High-Resolution X-ray Imaging

Jeong

Lee

et al. 2021

ACS Omega

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Facile approaches for creating thin-film scintillators with high spatial resolutions and variable shapes are required to broaden the applicability of high-resolution X-ray imaging. In this study, a transparent nano-polycrystalline ZnWO4 thin-film scintillator was fabricated by thermal evaporation for high-resolution X-ray imaging. The scintillator is composed of nano-sized grains smaller than the optical wavelength range to minimize optical scattering. The high transparency of the scintillators affords a sufficiently high spatial resolution to resolve the 2 μm line and space patterns when used in a high-resolution X-ray imaging system with an effective pixel size of 650 nm. The thermal evaporation method is a convenient approach for depositing thin and uniform films on complex substrates. ZnWO4 thin-film scintillators with various shapes, such as pixelated and curved, were fabricated via thermal evaporation. The results show that the transparent nano-polycrystalline ZnWO4 thin-film scintillator deposited through thermal evaporation has a potential for use in various high-resolution X-ray imaging applications.

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“…Belonging to a wide group of wolframite-type tungstates, zinc tungstate (ZnWO 4 ) is a technologically important material for numerous applications in the fields of luminescent materials [1,2,3,4,5], photocatalysts [6,7,8,9,10,11,12,13,14], Li-ion batteries [15], humidity sensors [16], materials for stimulated Raman scattering [17], and materials for deactivating microorganisms [18]. Among these applications, the photocatalytic properties of ZnWO 4 nanostructures have been intensively investigated in order to solve one of the most serious environmental problems in our modern society via semiconductor-based photocatalytic degradation of organic contaminants in water under sunlight [6,7,8,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Eu2+ and Eu3+ Doubly Doped ZnWO4 Nanoplates with Superior Photocatalytic Performance for Dye Degradation

Huang

Yang

et al. 2018

Nanomaterials

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Eu2+ and Eu3+ doubly doped ZnWO4 nanoplates with highly exposed {100} facets were synthesized via a facile hydrothermal route in the presence of surfactant cetyltrimethyl ammonium bromide. These ZnWO4 nanoplates were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectrometry, diffuse UV-vis reflectance spectroscopy, photoluminescence spectrophotometry, and photoluminescence lifetime spectroscopy to determine their morphological, structural, chemical, and optical characteristics. It is found that Eu-doped ZnWO4 nanoplates exhibit superior photo-oxidative capability to completely mineralize the methyl orange into CO2 and H2O, whereas undoped ZnWO4 nanoparticles can only cleave the organic molecules into fragments. The superior photocatalytic performance of Eu-doped ZnWO4 nanoplates can be attributed to the cooperative effects of crystal facet engineering and defect engineering. This is a valuable report on crystal facet engineering in combination with defect engineering for the development of highly efficient photocatalysts.

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Characterization of ZnWO_4 Raman crystal

Cited by 19 publications

References 24 publications

Influence of Accidental Impurities on the Spectroscopic and Luminescent Properties of ZnWO4 Crystal

Influence of Accidental Impurities on the Spectroscopic and Luminescent Properties of ZnWO4 Crystal

A Transparent Nano-Polycrystalline ZnWO₄ Thin-Film Scintillator for High-Resolution X-ray Imaging

Eu2+ and Eu3+ Doubly Doped ZnWO4 Nanoplates with Superior Photocatalytic Performance for Dye Degradation

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Characterization of ZnWO_4 Raman crystal

Cited by 19 publications

References 24 publications

Influence of Accidental Impurities on the Spectroscopic and Luminescent Properties of ZnWO4 Crystal

Influence of Accidental Impurities on the Spectroscopic and Luminescent Properties of ZnWO4 Crystal

A Transparent Nano-Polycrystalline ZnWO4 Thin-Film Scintillator for High-Resolution X-ray Imaging

Eu2+ and Eu3+ Doubly Doped ZnWO4 Nanoplates with Superior Photocatalytic Performance for Dye Degradation

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A Transparent Nano-Polycrystalline ZnWO₄ Thin-Film Scintillator for High-Resolution X-ray Imaging