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首页> 外文期刊>Optical Materials >Red long-lasting phosphorescence (LLP) in β-TCP type Ca_(9.5)Mn(PO_4)_7 compounds
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Red long-lasting phosphorescence (LLP) in β-TCP type Ca_(9.5)Mn(PO_4)_7 compounds

机译:β-TCP型Ca_(9.5)Mn(PO_4)_7化合物中的红色持久磷光(LLP)

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摘要

Mn-ion doped calcium phosphates namely Ca_5(PO_4)_3(OH) hydroxyapatite (HAP), β-Ca_3(PO_4)_2 (β-TCP) as well as Ca_(9.5)Mn(PO_4)_7 whitlockite were synthesized and the optical properties of the Mn~(2+) cations were investigated. Annealing under reducing atmosphere enhances the emission of the divalent manganese species. Electron paramagnetic resonance (EPR) and optical spectroscopies confirm that Mn~(2+) ions are the active species. Orange and red emissions occur respectively for the Mn:HAP and Mn:TCP. For this latter, long-lasting phosphorescence (LLP) coming from the Mn~(2+) emission (~4T_1 → ~6A_1 transition) is observed at 640 nm but it appears that the traps depths are either two shallow or too deep to lead to an efficient long-lasting emission.
机译:锰离子掺杂的磷酸钙Ca_5(PO_4)_3(OH)羟基磷灰石(HAP),β-Ca_3(PO_4)_2(β-TCP)以及Ca_(9.5)Mn(PO_4)_7辉锰矿研究了Mn〜(2+)阳离子的性质。在还原气氛下进行退火可提高二价锰的排放。电子顺磁共振(EPR)和光谱学证实了Mn〜(2+)离子是活性物质。 Mn:HAP和Mn:TCP分别发生橙色和红色发射。对于后者,在640 nm处观察到了来自Mn〜(2+)发射(〜4T_1→〜6A_1跃迁)的持久磷光(LLP),但似乎陷阱的深度是两个浅或太深而无法导致高效持久的排放。

著录项

  • 来源
    《Optical Materials》 |2011年第2期|p.376-380|共5页
  • 作者单位

    Chimie Paristech Laboratoire de Chimie de la Matiere Condensie de Paris UPMC College de France UMR-CNRS 7574 11 rue Pierre et Marie Curie 75231 Paris cedex 05 France;

    Chimie Paristech Laboratoire de Chimie de la Matiere Condensie de Paris UPMC College de France UMR-CNRS 7574 11 rue Pierre et Marie Curie 75231 Paris cedex 05 France Iaboratoire de la Matiire Condensee et de I'Environnement Faculte des Sciences Semlalia-Marrakech Bd Prince My Abdellah BP 2390 4000 Marrakech Morocco;

    Iaboratoire de la Matiire Condensee et de I'Environnement Faculte des Sciences Semlalia-Marrakech Bd Prince My Abdellah BP 2390 4000 Marrakech Morocco;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    phosphate compounds; divalent manganese; persistent luminescence; thermally stimulated luminescence;

    机译:磷酸盐化合物;二价锰持续发光;热激发发光;

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