Optical properties of Er³⁺-doped strontium barium niobate nanocrystals obtained by thermal treatment in glass

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• 作者：P. Haro-Gonzá ; lez ; F. Lahoz ; J. Gonzá ; lez-Platas ; J.M. Cá ; ceres ; S. Gonzá ; lez-Pé ; rez ; D. Marrero-L&#xf3 ; pez ; N. Capuj ; I.R. Martí ; n
• 关键词：Er³⁺ ; Glass ceramics ; SBN ; Up-conversion
• 刊名：Journal of Luminescence
• 出版年：2008
• 期刊代码：54_00222313
• 类别：ch
• 出版时间：May-June 2008
• 卷：128
• 期：5-6
• 页码：908-910
• 文件大小：163 K

摘要

Measurements of the optical properties of Er³⁺ ions in strontium barium niobate glass and glass ceramics have been carried out. The glasses have been fabricated using a melt-quenching method, and the glass ceramic samples have been obtained from the glass precursor by a thermal treatment. The ceramic samples formed by a glassy phase, and a crystalline phase contains nanocrystals of Sr_1−xBa_xNb₂O₆ (SBN) doped with Er³⁺ ions with a mean size of rc="http://www.sciencedirect.com/scidirimg/entities/223c.gif" alt="not, vert, similar" title="not, vert, similar" border="0">50 nm, as confirmed with XRD. Green up-conversion emission has been obtained under excitation at 800 nm, and the temporal evolution of this emission has been reported with the purpose of determining the involved up-conversion mechanism. These optical measures have confirmed that the Er³⁺ ions have been incorporated into the SBN matrix, after a thermal treatment, which produced an increment of the up-conversion efficiency.