Research of optical and mechanical properties of lithium aluminosilicate glass-ceramics

Matyash, I. E.; Minailova, I. A.; Сердега, Б. К.; Babichuk, I.S.

doi:10.1016/j.jnoncrysol.2016.12.039

Cited by 19 publications

(9 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A diode-pumped solid-state Nd:YAG laser with an emission wavelength of 532 nm (the power density of ∼10 5 W/cm 2 on the sample surface) was used for excitation . The scattered light was dispersed using a DFS-52 LOMO double monochromator with a spectral resolution of 5 cm –1 ; and a thermoelectrically cooled CCD detector recorded Raman spectra. − The optical E g was determined from the transmission and reflectance measurement over the range of 0.5–1.7 μm. These measurements were conducted at room temperature using a MDR-23U monochromator and InGaAs p-i-n-photodiodes …”

Section: Methodsmentioning

confidence: 99%

Spectroscopy and Theoretical Modeling of Phonon Vibration Modes and Band Gap Energy of Cu₂ZnSn(S_xSe_1–x)₄Bulk Crystals and Thin Films

et al. 2021

View full text Add to dashboard Cite

Semiconductor Cu2ZnSn(S x Se1–x )4 (CZTSSe) solid solution is considered as a perspective absorber material for solar cells. However, during its synthesis or deposition, any modification in the resulting optical properties is hardly predicted. In this study, experimental and theoretical analyses of CZTSSe bulk crystals and thin films are presented based on Raman scattering and absorption spectroscopies together with compositional and morphological characterizations. CZTSSe bulk and thin films are studied upon a change in the x = S/(S + Se) aspect ratio. The morphological study is focused on surface visualization of the solid solutions, depending on x variation. It has been discovered for the first time that the surface of the bulk CZTSSe crystal with x = 0.35 has pyramid-like structures. The information obtained from the elemental analysis helps to consider the formation of a set of possible intrinsic lattice defects, including vacancies, self-interstitials, antisites, and defect complexes. Due to these results and the experimentally obtained values of the band gap within 1.0–1.37 eV, a deviation from the calculated band gap values is estimated in the range of 1.0–1.5 eV. It is suggested which defects can have an influence on such a band gap change. Also, on comparing the experimental Raman spectra of CZTSSe with the theoretical modeling results, an excellent agreement is obtained for the main Raman bands. The proposed theoretical approach allows to estimate the values of concentration of atoms (S or Se) for CZTSSe solid solution directly from the experimental Raman spectra. Thus, the visualization of morphology and the proposed theoretical approach at various x values will help for a deeper understanding of the CZTSSe structure to develop next-generation solar cells.

show abstract

Section: Methodsmentioning

confidence: 99%

Spectroscopy and Theoretical Modeling of Phonon Vibration Modes and Band Gap Energy of Cu₂ZnSn(S_xSe_1–x)₄Bulk Crystals and Thin Films

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Для експериментального дослiдження коефiцiєнта температуропровiдностi використано технiку модуляцiйної поляриметрiї (МП) [21,22], яка здатна достовiрно реєструвати всi особливостi процесу встановлення еластокiнетики. Як показано в [23], з її допомогою можна реєструвати термонапруження в умовах незалежностi вiд температури механiчних, оптичних та теплофiзичних коефiцiєнтiв, що беруть участь у ґенерацiї напружень.…”

Section: методика експерименту та зразкиunclassified

“…Методика вимiрювання термонапружень за допомогою технiки МП та оптична схема були неодноразово описанi в публiкацiях [21][22][23], тож зупинимося тiльки на основних принципових моментах експерименту. Оптико-поляризацiйна схема, що складається з двох схрещених лiнiйних поляризаторiв, доповнена модулятором поляризацiї електромагнiтного випромiнювання.…”

Section: методика експерименту та зразкиunclassified

Determination of the thermal diffusivity coefficient of transparent solids by a modulation polarimetry technique

Matyash¹,

Minailova²,

Максименко³

et al. 2020

J. Phys. Stud.

View full text Add to dashboard Cite

show abstract

“…They are obtained by uniformly precipitating numerous tiny crystals in a glass matrix to form a multiphase composite comprising dense crystalline phases and glass phases. They exhibit remarkable hardness and favorable mechanical, thermal, and chemical stabilities [ 1 , 2 ]. The properties of glass-ceramics are determined by those of the glass matrix and precipitated crystals, for example, glass-ceramics with a β -quartz solid solution as the main crystalline phase have a low thermal expansion coefficient and high transparency [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Light-Transmitting Lithium Aluminosilicate Glass-Ceramics with Excellent Mechanical Properties Based on Cluster Model Design

Dong

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

In this study, for the first time, a cluster-plus-glue-atom model was used to optimize the composition of lithium aluminosilicate glass-ceramics. Basic glass in glass-ceramics was considered to be a 16-unit combination of three-valence {M2O3} and one-valence {Li2O} units. By adjusting the ratio of {M2O3} and {Li2O}, the composition of basic glass could be optimized. After optimization, the average cation valence of the base glass was increased to 2.875. After heat treatment of the optimized base glass, it is found that the crystal size, proportion, and crystallinity changed obviously compared with that before optimization. The main crystalline phases of all the lithium aluminosilicate glass-ceramics prepared in this work were Li2Si2O5 and LiAlSi4O10. All optimized glass-ceramics had an obvious improvement in the crystallinity, with one of the largest having a crystallinity of over 90%. Furthermore, its bending strength was 159 MPa, the microhardness was 967 Hv, and the visible light transmission rate exceeded 90%. Compared with the widely used touch panel cover glass, the optical properties were close, and the mechanical properties were greatly improved. Due to its excellent performance, it could be used in microelectronics, aerospace, deep-sea exploration, and other fields.

show abstract

Research of optical and mechanical properties of lithium aluminosilicate glass-ceramics

Cited by 19 publications

References 13 publications

Spectroscopy and Theoretical Modeling of Phonon Vibration Modes and Band Gap Energy of Cu₂ZnSn(S_xSe_1–x)₄Bulk Crystals and Thin Films

Spectroscopy and Theoretical Modeling of Phonon Vibration Modes and Band Gap Energy of Cu₂ZnSn(S_xSe_1–x)₄Bulk Crystals and Thin Films

Determination of the thermal diffusivity coefficient of transparent solids by a modulation polarimetry technique

Light-Transmitting Lithium Aluminosilicate Glass-Ceramics with Excellent Mechanical Properties Based on Cluster Model Design

Contact Info

Product

Resources

About

Research of optical and mechanical properties of lithium aluminosilicate glass-ceramics

Cited by 19 publications

References 13 publications

Spectroscopy and Theoretical Modeling of Phonon Vibration Modes and Band Gap Energy of Cu2ZnSn(SxSe1–x)4Bulk Crystals and Thin Films

Spectroscopy and Theoretical Modeling of Phonon Vibration Modes and Band Gap Energy of Cu2ZnSn(SxSe1–x)4Bulk Crystals and Thin Films

Determination of the thermal diffusivity coefficient of transparent solids by a modulation polarimetry technique

Light-Transmitting Lithium Aluminosilicate Glass-Ceramics with Excellent Mechanical Properties Based on Cluster Model Design

Contact Info

Product

Resources

About

Spectroscopy and Theoretical Modeling of Phonon Vibration Modes and Band Gap Energy of Cu₂ZnSn(S_xSe_1–x)₄Bulk Crystals and Thin Films

Spectroscopy and Theoretical Modeling of Phonon Vibration Modes and Band Gap Energy of Cu₂ZnSn(S_xSe_1–x)₄Bulk Crystals and Thin Films