Photoluminescence properties of Eu3+-doped low cost zinc silicate based glass ceramics

Arecanut husk (AH) was selected as a material for silica replacement in the synthesis process of glass-ceramics zinc silicate and also the fact that it has no traditional use and often being dumped and results in environmental issues. The process of pyrolysis was carried out at temperature 700 °C and above based on thermogravimetric analysis to produce arecanut husk ash (AHA). The average purity of the silica content in AHA ranged from 29.17% to 45.43%. Furthermore, zinc oxide was introduced to AHA and zinc silicate started to form at sintering temperature 700 °C and showed increased diffraction intensity upon higher sintering temperature of 600 °C to 1000 °C based on X-ray diffraction (XRD) analysis. The grain sizes of the zinc silicate increased from 1011 nm to 3518 nm based on the morphological studies carried out by field emission scanning electron microscopy (FESEM). In addition, the optical band gap of the sample was measured to be in the range from 2.410 eV to 2.697 eV after sintering temperature. From the data, it is believed that a cleaner production of low-cost zinc silicate can be achieved by using arecanut husk and have the potential to be used as phosphors materials.

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Synthesis and green luminescence of low cost Er2O3 doped zinc silicate glass-ceramics as laser materials

Optik ◽

10.1016/j.ijleo.2019.04.107 ◽

2019 ◽

Vol 184 ◽

pp. 480-484 ◽

Cited By ~ 3

Author(s):

Nuraidayani Effendy ◽

Hj Ab Aziz Sidek ◽

Halimah Mohamed Kamari ◽

Mohd Hafiz Mohd Zaid ◽

Josephine Ying Chyi Liew ◽

...

Keyword(s):

Silicate Glass ◽

Low Cost ◽

Glass Ceramics ◽

Zinc Silicate ◽

Green Luminescence ◽

Laser Materials

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Low cost phosphors: Structural and photoluminescence properties of Mn2+-doped willemite glass-ceramics

Optik ◽

10.1016/j.ijleo.2016.06.019 ◽

2016 ◽

Vol 127 (19) ◽

pp. 8076-8081 ◽

Cited By ~ 10

Author(s):

Nur Farhana Samsudin ◽

Khamirul Amin Matori ◽

Zaidan Abdul Wahab ◽

Josephine Ying Chi Liew ◽

Yap Wing Fen ◽

...

Keyword(s):

Low Cost ◽

Glass Ceramics ◽

Photoluminescence Properties

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An evaluation of the processing conditions, structure, and properties (biaxial flexural strength and antibacterial efficacy) of sintered strontium–zinc–silicate glass ceramics

Journal of Biomaterials Applications ◽

10.1177/0885328211430423 ◽

2011 ◽

Vol 27 (8) ◽

pp. 937-947 ◽

Cited By ~ 4

Author(s):

Mark Looney ◽

Helen O' Shea ◽

Lynda Gunn ◽

Dolores Crowley ◽

Daniel Boyd

Keyword(s):

Flexural Strength ◽

Silicate Glass ◽

Glass Ceramics ◽

Zinc Silicate ◽

Antibacterial Efficacy ◽

Processing Conditions ◽

Structure And Properties ◽

Biaxial Flexural Strength

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Synthesis and photoluminescence properties of novel core–shell–shell SiO2@CePO4:Tb@SiO2 submicro-spheres

CrystEngComm ◽

10.1039/c8ce01189c ◽

2018 ◽

Vol 20 (40) ◽

pp. 6351-6357 ◽

Cited By ~ 4

Author(s):

Kui-Suo Yang ◽

Yi-Lian Li ◽

Yang-Yang Ma ◽

Li-Na Feng ◽

An-Ping Wu ◽

...

Keyword(s):

Low Cost ◽

Core Shell ◽

Photoluminescence Properties ◽

The Core

The low-cost preparation of the core–shell–shell SiO2@CePO4:Tb@SiO2 was achieved, and the biocompatibility was improved with the use of SiO2.

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Effect of Different Catalysts and Growth Temperature on the Photoluminescence Properties of Zinc Silicate Nanostructures Grown via VLS Method

Chinese Physics B ◽

10.1088/1674-1056/ac439e ◽

2021 ◽

Author(s):

Ghfoor Muhammad ◽

Imran Murtaza ◽

Rehan Abid ◽

Naeem Ahmad

Keyword(s):

Energy Levels ◽

Visible Region ◽

Wide Bandgap ◽

Visible Spectral Range ◽

Zinc Silicate ◽

Band Spectrum ◽

Photoluminescence Properties ◽

Display Devices ◽

Crystal Growth Kinetics ◽

Potential Applications

Abstract Herein, we explore the photoluminescence properties of zinc silicate (Zn2SiO4) nanostructures synthesized by vapor-liquid-solid (VLS) mode of growth using three different catalysts (Sn, Ag and Mn). Different catalysts significantly influence the growth rate which in turn has an impact on the structure and hence the photoluminescence of the prepared zinc silicate nanostructures. Zn2SiO4 has a wide bandgap of about 5.5 eV and in its pure form, it does not emit in visible region due to its inner shell electronic transitions between the 3d5 energy levels. However, the incorporation of different catalysts (Sn, Ag and Mn) at different growth temperatures into the Zn2SiO4 crystal growth kinetics provides wide visible spectral range of photoluminescence (PL) emissions. PL analysis shows broad multi-band spectrum in the visible region and distinct colours (red, yellow, green, blue, cyan and violet) are obtained depending on the crystalline structure of the prepared nanostructures. The allowed transitions due to the effect of different catalysts on zinc silicate lattice offer a huge cross-section of absorption that generates strong photoluminescence. The correlation between the structural and optical properties of the synthesized nanostructures is discussed in detail. The synthesized photoluminescent nanostructures have potential applications in solid-state lighting and display devices.

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Effect of ZnO on Thermo Physical and Structural Properties of Lithium Zinc Silicate Glass-Ceramics

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.280-283.947 ◽

2007 ◽

Vol 280-283 ◽

pp. 947-952 ◽

Cited By ~ 3

Author(s):

Govind P. Kothiyal ◽

B.I. Sharma ◽

V.K. Shrikhande ◽

Madhumita Goswami ◽

J.V. Yakhmi

Keyword(s):

Glass Matrix ◽

Glass Ceramics ◽

Zinc Content ◽

Zinc Silicate ◽

Remarkable Difference ◽

X Ray Diffraction ◽

X Ray ◽

High Zinc ◽

Controlled Nucleation ◽

Thermo Physical Properties

Lithium zinc silicate (LZS) glass-ceramics with compositions: (a) Li2O-ZnO-SiO2-Na2OB2O3- P2O5 and (b) Li2O-ZnO-SiO2-K2O-Al2O3-B2O3-P2O5 have been prepared by controlled nucleation and crystallization. The effect of ZnO/(ZnO+SiO2) ratio on various thermo-physical properties was investigated by changing the ratio from 0.1 to 0.31 in the case of (a). Different crystalline phases have been identified by X-ray diffraction studies in glass-ceramics including cristobalite, Li3Zn0.5SiO4 and Li2SiO3. Density ( r) was found to increase from 2.62 to 2.82 gm cm-3 while microhardness (VHN) decreased from 6.56 to 5.79 GPa with increase in ZnO/(ZnO+SiO2) ratio in the glass-ceramics. Average thermal expansion coefficient (TEC) in the temperature range 30 to 450oC increased from 125x10-7 to 185x10-7 /oC. The increase in TEC and decrease in microhardness are thought to be due to the formation of different phases, which in turn influence the rigidity/bonding in the glass-ceramics. A remarkable difference in the microstructure close to interface of the glass-ceramics to Cu seal was seen in both the cases [high ZnO content (a) of ZnO/(ZnO+SiO2) ratio 0.31 and low ZnO content (b) of ZnO/(ZnO+SiO2) ratio 0.024]. Both the microstructures showed globally two contrast phases of bright and dark dispersed in the glass matrix. An interesting dandritic phase observed towards core in the microstructure for the high zinc content is not seen in the microstructure for low zinc content glass-ceramic. The seal withstands a vacuum of ~ 10-6 torr at helium leak rate of 3x10-10 torr litre/sec.

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