Temperature dependent upconversion and spectroscopic properties of Nd3+ doped barium bismuth tellurite glasses

被引：16

作者：

Suresh Kumar, J. ^{[1
]}

Pavani, K. ^{[1
]}

Gavinho, S. R. ^{[1
]}

Seshadri, M. ^{[2
]}

Anjos, V. ^{[2
]}

Bell, M. J. V. ^{[2
]}

Freire, F. N. ^{[3
]}

Valente, M. A. ^{[1
]}

Soares, M. J. ^{[1
]}

Graca, M. P. F. ^{[1
]}

机构：

[1] Univ Aveiro, Dept Phys & I3N, P-3810193 Aveiro, Portugal

[2] Univ Fed Juiz De Fora, Lab Espectroscopia Mat, Dept Fis, ICE, BR-36036900 Juiz De Fora, MG, Brazil

[3] Univ Fed Ceara, Dept Engn Mecan, Lab Filmes Fines & Energias Renovaveis, Fortaleza, Ceara, Brazil

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2018年 / 498卷

关键词：

RARE-EARTH IONS; CALCIUM FLUOROBORATE GLASSES; MULTIPHONON RELAXATION; OPTICAL-PROPERTIES; THERMAL-STABILITY; ENERGY-TRANSFER; OXIDE GLASSES; LUMINESCENCE; FLUORESCENCE; NIR;

D O I：

10.1016/j.jnoncrysol.2018.05.031

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：

This work reports on the spectroscopic properties and temperature dependent NIR to visible upconversion of Nd3+ doped barium bismuth tellurite glasses. Raman spectrum analysis was performed to predict the maximum phonon energy. Spectroscopic parameters (Omega 2, Omega 4, Omega 6 and chi) and radiative properties of certain transitions of Nd3+ ions were calculated by applying Judd-Ofelt (J-O) theory. The concentration dependence of NIR emission and visible upconversion intensities of various levels were discussed. Decrease in the experimental lifetime of Nd3+: F-4(3/2) level with increase of Nd3+ ion concentration has also been discussed by analysing decay curves of the NIR emission. The variation of upconversion spectral intensities with respect to sample temperature was studied. Thermal quenching was observed in all the upconversion bands and no anomalous variations were observed in the temperature range 14-300 K.

引用

页码：89 / 94

页数：6

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