Lithium concentration effect on crystallization kinetics and spectral properties of Cr-doped Li2O-K2O-Al2O3-B2O3 glass-ceramics; Ceramics International; Vol. 49, iss. 12

Lithium concentration effect on crystallization kinetics and spectral properties of Cr-doped Li2O-K2O-Al2O3-B2O3 glass-ceramics; Ceramics International; Vol. 49, iss. 12

Bibliographic Details
Parent link:	Ceramics International Vol. 49, iss. 12.— 2023.— [P. 20061-20070]
Corporate Author:	Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения
Other Authors:	Kulpina E. Ekaterina, Babkina A. Anastasiia, Zyryanova K. Ksenia, Valiev D. T. Damir Talgatovich, Stepanov S. A. Sergey Aleksandrovich, Nuryev R. Rustam, Ignatiev A. Alexander, Zhizhin E. Evgeny, Koroleva A. Aleksandra
Summary:	Title screen Alkali-aluminaborate glass-ceramics doped with Cr ions are synthesized by volume crystallization. According to non-isothermal DSC method three parallel processes occur in material: 2D Avrami-Yerofeev nucleation, 2D and 3D crystallization. During the heat treatment, the LiAl7B4O17 crystalline phase is formed. With Li2O content rising crystallinity of the material increases from 27 to 69% and the crystalline field strength Dq/B of Cr3+ increases from 2.25 to 3.55. The photoluminescence spectra possess intense bands at 685, 700, and 715 nm for glass with 6.8 mol.% Li2O and higher and its decay kinetics is described by the sum of two exponentials. The maximum luminescence QY obtained is 50% at 16.1 mol.% Li2O. The highest conversion efficiency of the 532 nm LED luminescence obtained by glass-ceramics with chromium is 10%. Thus, Cr-doped alkali-alumina-borate glass-ceramics are a promising material for use in the design of radiation sources for the red and NIR spectral regions. Режим доступа: по договору с организацией-держателем ресурса
Language:	English
Published:	2023
Subjects:	электронный ресурс труды учёных ТПУ alkali-alumina-borate glass luminescent glass-ceramics trivalent chromium ions Avrami parameter crystallization kinetics activation energy red radiation source щелочно-глиноземно-боратное стекло стеклокерамика трехвалентный хром кристаллизация источники излучений
Online Access:	https://doi.org/10.1016/j.ceramint.2023.03.129
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669337

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