The role of Ce3+/Ce4+ in the spectroscopic properties of cerium oxide doped zinc-tellurite glasses prepared under air

被引：24

作者：

Taniguchi, Maiara Mitiko ^{[1
]}

da Silva, Edenilson ^{[1
]}

Toledo da Silva, Marco Aurelio ^{[2
]}

Herculano, Leandro Silva ^{[3
]}

Muniz, Robson Ferrari ^{[4
]}

Sandrini, Marcelo ^{[1
]}

Belancon, Marcos Paulo ^{[1
]}

机构：

[1] Univ Tecnol Fed Parana UTFPR, Campus Pato Branco, Pato Branco, Brazil

[2] Univ Tecnol Fed Parana UTFPR, Lab Photon & Nanostruct Mat DFMNano Londrina, Postgrad Course Mat Sci & Engn, Campus Londrina, Londrina, Parana, Brazil

[3] Univ Tecnolog Fed Parana UTFPR, Dept Fis Medianeira, Campus Medianeira, Londrina, Parana, Brazil

[4] Univ Estadual Maringa UEM, Dept Ciencias Goioere, Campus Goioere, Maringa, Parana, Brazil

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2020年 / 547卷

关键词：

Tellurite glass; Cerium doping; Active tellurium; Zinc-tellurite; ENERGY-TRANSFER; SILVER NANOPARTICLES; OPTICAL-PROPERTIES; FLUORESCENCE; BAND; EMISSION; CE3+; LUMINESCENCE; CERAMICS; ER3+;

D O I：

10.1016/j.jnoncrysol.2020.120307

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：

Emerging technologies are demanding innovative properties of glasses. In this work Cerium Oxide is used as dopant in Zinc-Tellurite samples and its effects on the properties of the glass are investigated. Thermal analysis and X-ray diffraction confirmed the amorphous nature of all samples. The bivalent nature of Cerium is investigated spectroscopically and an strong redshift induced by the dopant is attributed to charge transfers O2--Ce4+, while the 4f-5d transition of Ce3+ could not be identified in absorption or luminescence measurements. Yellow/red (570/650 nm) emission under 410/450 nm pumping were observed and are originated from Te4+ ions, which absorbs light in the UV/blue region of the spectrum. The incorporation of some Cerium Oxide enhanced the visible luminescence, though we found no evidence that Cerium ions play some role in the radiative process. The luminescence is enhanced though due changes in the glass network induced by the dopant.

引用

页数：5

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