Research output: Contribution to journal › Article › peer-review
Lithium concentration effect on crystallization kinetics and spectral properties of Cr-doped Li2O–K2O–Al2O3–B2O3 glass-ceramics. / Kulpina, Ekaterina; Babkina, Anastasiia; Zyryanova, Ksenia; Valiev, Damir; Stepanov, Sergey; Nuryev, Rustam; Ignatiev, Alexander; Zhizhin, Evgeny; Koroleva, Aleksandra.
In: Ceramics International, Vol. 49, No. 12, 01.06.2023, p. 20061-20070.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Lithium concentration effect on crystallization kinetics and spectral properties of Cr-doped Li2O–K2O–Al2O3–B2O3 glass-ceramics
AU - Kulpina, Ekaterina
AU - Babkina, Anastasiia
AU - Zyryanova, Ksenia
AU - Valiev, Damir
AU - Stepanov, Sergey
AU - Nuryev, Rustam
AU - Ignatiev, Alexander
AU - Zhizhin, Evgeny
AU - Koroleva, Aleksandra
PY - 2023/6/1
Y1 - 2023/6/1
N2 - 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.
AB - 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.
KW - Alkali-alumina-borate glass
KW - Luminescent glass-ceramics
KW - Trivalent chromium ions
KW - Avrami parameter
KW - Crystallization kinetics
KW - Activation energy
KW - Red radiation source
UR - https://www.mendeley.com/catalogue/0891b8fb-0999-362a-9fc5-fae4d247d2ee/
U2 - 10.1016/j.ceramint.2023.03.129
DO - 10.1016/j.ceramint.2023.03.129
M3 - Article
VL - 49
SP - 20061
EP - 20070
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 12
ER -
ID: 106593578