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  • 标题:Linear structural evolution induced tunable photoluminescence in clinopyroxene solid-solution phosphors
  • 本地全文:下载
  • 作者:Zhiguo Xia ; Yuanyuan Zhang ; Maxim S. Molokeev
  • 期刊名称:Scientific Reports
  • 电子版ISSN:2045-2322
  • 出版年度:2013
  • 卷号:3
  • DOI:10.1038/srep03310
  • 出版社:Springer Nature
  • 摘要:Clinopyroxenes along the Jervisite (NaScSi2O6) – Diopside (CaMgSi2O6) join have been studied, and a solid-solution of the type (Na1− x Ca x )(Sc1− x Mg x )Si2O6 has been identified in the full range of 0 ≤ x ≤ 1. The powder X-ray patterns of all the phases indicate a structural similarity to the end compounds and show smooth variation of structural parameters with composition. The linear structural evolution of iso-structural (Na1− x Ca x )(Sc1− x Mg x )Si2O6 solid-solutions obeying Vegard's rule has also been examined and verified by high resolution transmission electron microscopy (HRTEM). The continuous solid-solutions show the same structural type, therefore the photoluminescence spectra of Eu2+ doped samples possess the superposition of spectral features from blue-emitting component (CaMgSi2O6:Eu2+) and yellow-emitting one (NaScSi2O6:Eu2+). This indicates that the spectroscopic properties of (Na1− x Ca x )(Sc1− x Mg x )Si2O6 clinopyroxene solid-solutions are in direct relations with structural parameters, and it is helpful for designing color-tunable photoluminescence with predetermined parameters.
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