Optical and EPR studies of Fe-doped CaAl12O19 near-infrared emitting phosphor

被引：4

作者：

Rodionovs, P. ^{[1
]}

Kemere, M. ^{[1
]}

Antuzevics, A. ^{[1
]}

Sarakovskis, A. ^{[1
]}

Fedotovs, A. ^{[1
]}

Rogulis, U. ^{[1
]}

机构：

[1] Univ Latvia, Inst Solid State Phys, 8 Kengaraga Str, LV-1063 Riga, Latvia

来源：

OPTICAL MATERIALS | 2023年 / 144卷

基金：

瑞典研究理事会;

关键词：

Luminescence; Electron paramagnetic resonance; Near-infrared; Vacuum ultraviolet spectroscopy; Reflected electron energy loss spectroscopy; SYNCHROTRON-RADIATION; SINGLE-CRYSTAL; LUMINESCENCE; PHOTOLUMINESCENCE; EMISSION; IONS; SPECTROSCOPY; CHEMISTRY; MECHANISM; HIBONITE;

D O I：

10.1016/j.optmat.2023.114342

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this article we report our results on optical and electron paramagnetic resonance studies of Fe-doped CaAl12O19. At room temperature, optical excitation in the ultraviolet region leads to highly intensive luminescence signal at around 810 nm that is ascribed to the emission of Fe3+. Measurements at low temperature revealed slight shift of the emission maximum and appearance of additional wide luminescence bands in the blue and near-infrared parts of spectrum. The dependence of the luminescence intensity and decay time on temperature and concentration of Fe3+ in the material has been studied. Electron paramagnetic resonance studies showed presence of at least two different paramagnetic centres related to Fe3+. The nature of the observed luminescence bands is discussed.

引用

页数：8

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