Structure and anomalous light scattering of Er-doped transparent glass-ceramics containing ZnO nanocrystals

被引：7
|
作者：
Shepilov, M. [1 ]
Dymshits, O. [1 ]
Alekseeva, I [1 ]
Hubetsov, A. [1 ]
Shemchuk, D. [1 ]
Zhilin, A. [2 ]
机构：
[1] SI Vavilov State Opt Inst, St Petersburg 192171, Russia
[2] DV Efremov Inst Electrophys Apparat, St Petersburg 196641, Russia
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2021年 / 571卷
基金：
俄罗斯基础研究基金会;
关键词：
Glass-ceramics; Structure; ZnO Nanocrystals; Light scattering; Interparticle interference; Computer simulation; EFFICIENT ENERGY-TRANSFER; LIQUID-PHASE-SEPARATION; NEAR-INFRARED EMISSION; SIMULTANEOUS NUCLEATION; OPTICAL-PROPERTIES; VISIBLE-LIGHT; PHOTOLUMINESCENCE; SILICATE; YB3+; EU3+;
D O I：
10.1016/j.jnoncrysol.2021.121067
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Potassium zinc aluminosilicate glass doped with 1.5 mol% Er2O3 was subjected to successive heat treatments at 720 and 750 degrees C resulted in precipitation of ZnO nanocrystals. After each hold, the volume fraction and size of crystals in transparent glass-ceramics were determined, and optical density spectrum was recorded. Analysis of optical spectra revealed that: the surrounding of Er3+ ions differs in the initial glass and glass-ceramics; a strong absorption band is observed in glass-ceramics at wavelengths longer than 1000 nm, which is caused by localized surface plasmon resonance in semiconducting ZnO nanocrystals; the so-called "anomalous light scattering" is observed, i.e., scattering coefficient of glass-ceramics in the spectral range 480-800 nm is a power function of the inverse wavelength, and the exponent ("the scattering exponent") is appreciably greater than the Rayleigh value 4. The experimental scattering coefficient of one glass-ceramic is compared with that calculated for the model proposed earlier.
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页数：10
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