Long afterglow from multi dopant transparent and opaque glass ceramic phosphor for white, red, yellow, and blue emissions: Zn2SiO4:Eu3+, Dy3+, Mn2+

Abdel-Hameed, Salwa A.M.; Marzouk, M. A.

doi:10.1016/j.jallcom.2021.162337

Cited by 13 publications

(6 citation statements)

References 55 publications

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“…Figure 6b represents 3-dimensional structure of willemite (Zn 2 SiO 4 ) indicating four-and six-membered rings of ZnO 4 and SiO 4 tetrahedra. The present simulated 3d structure is matched with that reported in the previous study [32].…”

Section: X-ray Diffractionsupporting

confidence: 89%

“…Bismuth is a non-toxic post-transition metal with a wide variety of valence states, which, along with its proclivity for cluster formation, makes it a versatile but difficult dopant for possible luminescence applications. Since the outer orbitals responsible for luminescence are not insulated and are heavily impacted by their surroundings, their energies are host dependent [32]. Bismuth-based compounds have a wide range of luminescence, ranging from UV to infrared emissions.…”

Section: Photoluminescence Measurementsmentioning

confidence: 99%

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Preparation and characterization of a novel luminescence nano-sillenite (Bi12SiO20) glass ceramic within Bi2O3–ZnO–SiO2 system

Almasarawi¹,

Hamzawy²,

Margha³

et al. 2022

Appl. Phys. A

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Bismuth silicate with sillenite structure (Bi12SiO20) nanophase was prepared via melt–quenching technique in the Bi2O3–ZnO–SiO2 glass system. The effect of replacement ZnO by Bi2O3 was studied. Their thermal behavior showed the change of glass transition temperature (Tg) from 577 °C in the Bi2O3-free glass to 438 °C in ZnO-free glass. In addition, the crystallization temperatures were not only changed from two to one peak, but also decreased from 927 to 476 °C in the same order. According to the heat treatment regimes, willemite, sillenite, tetragonal Bi2O3, cubic Bi2O3 and traces of ZnO were crystallized with different ratios depending on the change in composition and temperature. Sillenite was enhanced with increase heat treatment temperature and/or Bi2O3 additions. Heat treatment at 650 °C/10 h revealed the best regime, where higher degree of crystallization was achieved. The microstructure at 700 ℃/30 min showed nano-scale oriented parallel rod crystals with hexagonal making at their end, whereas clusters of irregular nano-size crystals was appeared at 650 °C/10 h. Transmission spectra of the glasses in UV–Vis–midIR region were increased with Bi2O3 addition reaching 74% in 100B. Photoluminescence properties of both glasses and their corresponding glass–ceramics showed luminescence nature since the blue and green colors were clearly appeared. Calculation of optical bandgap (Eopt) revealed 3.2–2.19 eV with increasing Bi2O3; these values are located in the semiconducting range. The prepared samples can be utilized in electro-optical instruments, also the high transmission in mid-IR nominate it for IR transmitting windows.

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Section: X-ray Diffractionsupporting

confidence: 89%

Section: Photoluminescence Measurementsmentioning

confidence: 99%

Preparation and characterization of a novel luminescence nano-sillenite (Bi12SiO20) glass ceramic within Bi2O3–ZnO–SiO2 system

Almasarawi¹,

Hamzawy²,

Margha³

et al. 2022

Appl. Phys. A

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“…The heattreated samples show a characteristic decrease in the band gap values than those of their parent glasses. According to previous studies, [22][23][24] the observed variation in the optical band gap could be correlated to the nature of dopant metal ions. The main reason for this variation is related to the ability of metal ions to form non-bridging oxygen in the glass network that decreases with the addition of modifiers, while the characteristic observed decrease in the optical analysis of the heat-treated samples is due to the disorder decrease in the glass network due to the addition of transition metal ions.…”

Section: Resultsmentioning

confidence: 74%

“…The main reason for this variation is related to the ability of metal ions to form non-bridging oxygen in the glass network that decreases with the addition of modifiers, while the characteristic observed decrease in the optical analysis of the heat-treated samples is due to the disorder decrease in the glass network due to the addition of transition metal ions. 24 Estimation of the color chromaticity coordinates was carried out applying the CIE1931 chromaticity diagram from three dimensionless quantities x(λ), y(λ), and z̄ (λ) as follows;…”

Section: Resultsmentioning

confidence: 99%

“…Variations in the shining of the red color can be assigned to the effectiveness of transition metal type, in addition to the coordination state for each one as assumed in previous studies. 23,24 Figure 6 represents the DTA data of the main parent undoped glass. The Figure shows a characteristic endothermic peak at about 421°C and a sharp exothermic peak centered at 552°C with an extended additional peak at 645°C.…”

Section: Resultsmentioning

confidence: 99%

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Characterization of Ruby Color in Some Special Glass Compositions and Their Corresponding Glass–Ceramic Derivatives

Marzouk

Kazazz

Ali

et al. 2022

J. Electron. Mater.

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Glasses of the system B2O3 – PbO – MgF2 – P2O5 – SiO2 containing different dopants from Cr2O3, MnO2, and SeO2 were prepared by the conventional melt quenching method. The prepared glasses were characterized by their ruby color caused by the effect of dopants. The amorphous nature of the prepared glasses was confirmed by x-ray diffraction (XRD). Differential thermal analysis (DTA) was used to design a heat treatment program to obtain their corresponding transparent glass–ceramic derivatives from parent glasses. Collective spectroscopic measurements were applied to evaluate the optical properties of glasses and their corresponding glass–ceramics. XRD and morphological analysis of glass–ceramics indicated the formation of two crystalline phases (PbO(B2O3)2) and (Mg2BO3F). Optical analysis confirmed the stability of the color even after heat treatment. The chromaticity coordinates indicated a deep red color related to the chromium dopant and red wine color for selenium and manganese dopants.

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Enhancing the luminescent properties of strontium phosphate glass via controlled crystallization and rare earth dopants

Marzouk,

Ali

2024

J Mater Sci: Mater Electron

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The study focused on investigating the photoluminescence behavior of pure strontium phosphate glasses with a composition of 62.5% P2O5 and 37.5% SrO. Then it was extended to investigate the effects of adding rare earth elements (Pr3+, Sm3+, Eu3+, Dy3+) and the crystallization process on improving luminescent properties of the parent glass. Various spectroscopic measurements, including XRD, SEM & EDAX, and FTIR, were conducted to examine the relationship between structural changes and their impact on luminescent performance. The optical measurements showed a characteristic enhancement resulting from the addition of RE3+-dopants and the crystallization process. The crystallization of glasses yielded a single phase from Sr(PO3)2 with an extended emission peak at 671 nm and heightened intensity compared to the glassy sample. The development of efficient and stable luminescent glasses via crystallization and dopant type can lead to advancements in applications such as glowing devices, optical detectors, and photonics innovations.

show abstract

Long afterglow from multi dopant transparent and opaque glass ceramic phosphor for white, red, yellow, and blue emissions: Zn2SiO4:Eu3+, Dy3+, Mn2+

Cited by 13 publications

References 55 publications

Preparation and characterization of a novel luminescence nano-sillenite (Bi12SiO20) glass ceramic within Bi2O3–ZnO–SiO2 system

Preparation and characterization of a novel luminescence nano-sillenite (Bi12SiO20) glass ceramic within Bi2O3–ZnO–SiO2 system

Characterization of Ruby Color in Some Special Glass Compositions and Their Corresponding Glass–Ceramic Derivatives

Enhancing the luminescent properties of strontium phosphate glass via controlled crystallization and rare earth dopants

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