Structural, thermal, and optical properties of Er3+/Yb3+ co-doped oxyhalide tellurite glasses, glass-ceramics and ceramics

IF 1.9 3区物理与天体物理 Q2 OPTICS Journal of Quantitative Spectroscopy & Radiative Transfer Pub Date : 2012-04-01 DOI:10.1016/j.jqsrt.2012.01.004

C. Joshi , R.N. Rai , S.B. Rai

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引用次数: 29

Abstract

Glass-ceramics and ceramics containing nano-crystals of different phases doped with Er³⁺/Yb³⁺ ions have been successfully prepared by heat treatment of the precursor oxyhalide glasses synthesized by the melt-quench method. X-ray diffraction patterns and transmission electron microscopy (TEM) images verify the precipitation of nano-crystals. Emission of Er³⁺ enhances several times when Yb³⁺ ion is added with the matrix. The Stark splitting and the intensity of different emission bands increase to a great extent when we approach to ceramics from glasses via glass-ceramics. The intensity of the blue and green emission bands increases much faster than the red and NIR emission bands. Intense upconversion emission observed by the naked eye has been quantified in terms of standard chromaticity diagram (CIE). Power dependence study shows that the upconversion of NIR radiation to visible radiation takes place mainly via photon avalanche (PA) process.

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Er3+/Yb3+共掺杂氧化卤化物碲酸盐玻璃、微晶玻璃和陶瓷的结构、热学和光学性质

通过对熔淬法合成的氧化卤化物玻璃前驱体进行热处理，成功制备了掺杂Er3+/Yb3+离子的不同相纳米晶微晶玻璃和陶瓷。x射线衍射图和透射电子显微镜(TEM)图像证实了纳米晶体的沉淀。在基体中加入Yb3+离子后，Er3+的发射增强数倍。当我们通过微晶玻璃接近陶瓷时，斯塔克分裂和不同发射带的强度大大增加。蓝色和绿色发射带的强度比红色和近红外发射带增加得快得多。肉眼观察到的强烈上转换发射已经用标准色度图(CIE)进行了量化。功率依赖性研究表明，近红外辐射向可见光辐射的上转换主要是通过光子雪崩过程进行的。

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来源期刊

Journal of Quantitative Spectroscopy & Radiative Transfer 物理-光谱学

CiteScore

5.30

自引率

21.70%

发文量

273

审稿时长

58 days

期刊介绍： Papers with the following subject areas are suitable for publication in the Journal of Quantitative Spectroscopy and Radiative Transfer: - Theoretical and experimental aspects of the spectra of atoms, molecules, ions, and plasmas. - Spectral lineshape studies including models and computational algorithms. - Atmospheric spectroscopy. - Theoretical and experimental aspects of light scattering. - Application of light scattering in particle characterization and remote sensing. - Application of light scattering in biological sciences and medicine. - Radiative transfer in absorbing, emitting, and scattering media. - Radiative transfer in stochastic media.