Crystal growth in zinc borosilicate glasses

Kullberg, Ana T.G.; Lopes, Andreia A. S.; Veiga, João Pedro

doi:10.1016/j.jcrysgro.2016.07.022

Cited by 6 publications

(4 citation statements)

References 15 publications

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“…Increased heating temperature may result in increased FTIR band intensities. Based on the analysis of Kullberg et al, IR bands corresponding to asymmetric stretching vibration Zn-O of ZnO 4 units are found at 500-550 cm −1 and 650-730 cm −1 , while for symmetric stretching vibration of Si-O-B bending, there was asymmetric stretching vibration of Si-O-B that overlapped with the B-O stretching modes of the BO 4 tetrahedral at 900-950 cm −1 [30].…”

Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 99%

“…Sci. 2020, 10, x FOR PEER REVIEW 6 of 12 vibration Zn-O of ZnO4 units are found at 500-550 cm −1 and 650-730 cm −1 , while for symmetric stretching vibration of Si-O-B bending, there was asymmetric stretching vibration of Si-O-B that overlapped with the B-O stretching modes of the BO4 tetrahedral at 900-950 cm −1 [30].…”

Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 99%

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Phase Transformation, Optical and Emission Performance of Zinc Silicate Glass-Ceramics Phosphor Derived from the ZnO–B2O3–SLS Glass System

et al. 2020

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A new transparent zinc silicate glass-ceramic was derived from the 55ZnO–5B2O3–40SLS glass system via a controlled heat-treatment method. The precursor glass sample was placed through the heat-treatment process at different temperatures to study the progress in phase transformation, optical performance and emission intensity of the zinc silicate glass-ceramics. For this project, material characterization was measured through several tests using densimeter and linear shrinkage measurement, X-ray diffraction (XRD), Fourier transform infrared reflection (FTIR), ultraviolet–visible (UV–Vis) and photoluminescence (PL) spectroscopy. The density and linear shrinkage measurements show that the density of the particular glass-ceramic samples increases with the progression of heating temperature. The XRD analysis displays the result in which the zinc silicate crystal starts to grow after the sample was treated at 700 °C. In addition, the FTIR spectra indicated that the crystallization of the zinc silicate phase occurred with the appearance of SiO4, ZnO4 and Si-O-Zn bands. UV–visible exhibited the small changes when the value for the optical band gap decreased from 3.867 to 3.423 eV, influenced by the temperature applied to the sample. Furthermore, the PL spectroscopy showed an enhancement of broad green emission at 534 nm upon the increased heat-treatment temperature. Thus, it can be concluded there is the progression of crystal growth as the heat-treatment temperature increased; three emission peaks appeared at 529, 570 and 682 nm for the green, yellow and red emissions, respectively.

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Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 99%

Section: Fourier Transform Infrared Radiation (Ftir) Analysismentioning

confidence: 99%

Phase Transformation, Optical and Emission Performance of Zinc Silicate Glass-Ceramics Phosphor Derived from the ZnO–B2O3–SLS Glass System

et al. 2020

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“…Crystallization behavior was related to the amount of ZnO (modifier oxide) in the host matrix. A higher amount of ZnO facilitated the formation of the willemite phase at lower temperatures [29][30][31][32][33].…”

Section: Xrd and Dsc Analysismentioning

confidence: 99%

Effect of ZnO on Luminescence Performance of Terbium-Activated Zinc Borosilicate Glasses

Dayioglugil,

Solak

2024

Materials

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In this study, terbium-doped ZnO-SiO2-B2O3-Na2O glasses were fabricated with the conventional melt-quenching method. The effect of altering the concentration of the host matrix on luminescence performance was investigated in terms of different ZnO/B2O3 and ZnO/SiO2 ratios. FT-IR results indicate that bridging oxygens (Bos) were converted to non-bridging oxygens (NBOs) with increments of ZnO. Furthermore, the emission intensity and luminescence lifetime of samples were influenced by the amount of ZnO; this was proven with photoluminescence spectra results. The maximum emission intensity was observed at a 1.1 ZnO/B2O3 ratio and a 0.8 ZnO/SiO2 ratio; however, the highest luminescence lifetime was observed at a 1.1 ZnO/SiO2 ratio. The emission intensity and luminescence lifetime of glass samples were improved by heat treatment as a result of the formation of willemite and zinc oxide phases. An increase in the ZnO/SiO2 ratio facilitated the formation of willemite and zinc oxide phases; therefore, crystallinity was directly related to the luminescence behavior of glass samples.

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“…The addition of boron oxide (B 2 O 3 ) into the glass matrix network is considered a valuable finding, which resulted in the glass system having improved physical and chemical properties. A comparative study on the zinc-boro-silicate (ZnO-B 2 O 3 -SiO 2 ) has been done thoroughly; thus, variation in ZnO/B 2 O 3 ratio has guided the actual proportion to produce precipitated crystals which is later proven that with the B 2 O 3 additive, it can solve the crucial issue of lowering the melting point compared to ZnO-SiO 2 [36][37][38]. The incorporation of ZnO-B 2 O 3 -SiO 2 (ZBS) as a ternary glass system has developed willemite (Zn 2 SiO 4 ) crystals through the sintering process.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sintering Temperature Variation on Synthesis of Glass-Ceramic Phosphor Using Rice Husk Ash as Silica Source

et al. 2020

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In this study, the authors attempted to propose the very first study on fabrication and characterization of zinc-boro-silicate (ZBS) glass-ceramics derived from the ternary zinc-boro-silicate (ZnO)0.65(B2O3)0.15(RHA)0.2 glass system through a conventional melt-quenching method by incorporating rice husk ash (RHA) as the silica (SiO2) source, followed by a sintering process. Optimization of sintering condition has densified the sintered samples while embedded beta willemite (β-Zn2SiO4) and alpha willemite (α-Zn2SiO4) were proven in X-ray diffraction (XRD) analysis. Field emission scanning electron microscopy (FESEM) has shown the distribution of willemite crystals in rhombohedral shape crystals and successfully form closely-packed grains due to intense crystallization. The photoluminescence (PL) spectra of all sintered ZBS glasses presented various emission peaks at 425, 463, 487, 531, and 643 nm corresponded to violet, blue, green, and red emission, respectively. The correlation between the densification, phase transformation, microstructure, and photoluminescence of Zn2SiO4 glass-ceramic phosphor is discussed in detail.

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Crystal growth in zinc borosilicate glasses

Cited by 6 publications

References 15 publications

Phase Transformation, Optical and Emission Performance of Zinc Silicate Glass-Ceramics Phosphor Derived from the ZnO–B2O3–SLS Glass System

Phase Transformation, Optical and Emission Performance of Zinc Silicate Glass-Ceramics Phosphor Derived from the ZnO–B2O3–SLS Glass System

Effect of ZnO on Luminescence Performance of Terbium-Activated Zinc Borosilicate Glasses

Effects of Sintering Temperature Variation on Synthesis of Glass-Ceramic Phosphor Using Rice Husk Ash as Silica Source

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