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Temperature-dependent photoluminescence properties of MnF2: Configurational-coordinate model analysis

机译:MnF2的温度依赖性光致发光特性:构型坐标模型分析

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摘要

A white MnF_2 powder is synthesized by chemical etching of Mn shots in an aqueous HF solution. The optical properties of this synthesized powder are investigated using photoluminescence (PL) analysis, PL excitation spectroscopy, diffuse reflectivity, and PL decay measurements. The MnF_2 powder exhibits PL peaks in the red (~600 nm) and infrared spectral regions (~780 nm) under visible to ultraviolet excitation. These PL peaks are asymmetric with a tail on the long-wavelength side. Such spectral features and temperature-dependent PL intensities are well interpreted by a newly developed model with Huang-Rhys's factor as the electron-local vibration coupling strength. The ground- and excited-state energy level diagram for the Mn~(2+) ions in MnF_2 is also proposed.
机译:白色MnF_2粉末是通过在HF水溶液中化学蚀刻Mn喷丸合成的。使用光致发光(PL)分析,PL激发光谱,漫反射率和PL衰减测量研究了这种合成粉末的光学性质。在可见光到紫外光激发下,MnF_2粉末在红色(〜600 nm)和红外光谱区(〜780 nm)中显示PL峰。这些PL峰是不对称的,在长波长侧有尾巴。这种新开发的模型以Huang-Rhys因子作为电子局部振动耦合强度,很好地解释了这种光谱特征和温度相关的PL强度。还提出了MnF_2中Mn〜(2+)离子的基态和激发态能级图。

著录项

  • 来源
    《Journal of Applied Physics》 |2011年第10期|p.314-319|共6页
  • 作者

    Takahiro Arai; Sadao Adachi;

  • 作者单位

    Graduate School of Engineering, Gunma University, Kiryu-shi, Gunma 376-8515, Japan;

    Graduate School of Engineering, Gunma University, Kiryu-shi, Gunma 376-8515, Japan;

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

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