Optical and upconversion properties of Er3+-doped oxyfluoride transparent glass-ceramics containing SrF2 nanocrystals

被引：17

作者：

Kesavulu, Culala Rajasekharaudayar ^{[1
]}

Yoo, Mi-Yeon ^{[1
]}

Lee, Jin-Ho ^{[1
]}

Lim, Ki-Soo ^{[1
]}

Dharmaiah, Peyala ^{[2
]}

Jayasankar, Chalicheemalapalli Kulala ^{[2
]}

Babu, Palamandala ^{[3
]}

机构：

[1] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea

[2] Sri Venkateswara Univ, Dept Phys, Tirupati 517502, Andhra Pradesh, India

[3] Govt Degree Coll, Dept Phys, Satyaveedu 517588, India

来源：

JOURNAL OF MATERIALS RESEARCH | 2013年 / 28卷 / 11期

基金：

新加坡国家研究基金会;

关键词：

EXCITED-STATE ABSORPTION; ER3+ IONS; SPECTROSCOPIC ANALYSIS; ENERGY-TRANSFER; WAVE-GUIDES; LUMINESCENCE; FLUORESCENCE; INTENSITIES; RED; MECHANISMS;

D O I：

10.1557/jmr.2013.128

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Er3+-doped oxyfluoride transparent glass and glass-ceramics (GCs) containing SrF2 nanocrystals were prepared and their spectroscopic properties were investigated. The formation of SrF2 nanocrystals in GCs has been confirmed by x-ray diffraction (XRD) and transmission electron microscopy. The Judd-Ofelt (JO) parameters have been evaluated from absorption spectra of the Er3+-doped glass and GCs, which are used to predict radiative properties for some important luminescence levels of Er3+ ions in glass and GCs. The XRD and JO parameters suggest that the Er3+ ions are progressively incorporated into the SrF2 nanocrystals in the GCs compared with glass. The up-conversion luminescence intensity increases significantly in GCs with increase in time of thermal treatment. The lifetime of the S-4(3/2) level of the Er3+ ions in GCs is found to be slightly higher than that in the glass due to the incorporation of Er3+ ions into the lower phonon energy of SrF2 nanocrystals in the GCs.

引用

页码：1481 / 1489

页数：9

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