Abnormal luminescent property of Mn2+ in alpha-LiZnBO3:Mn2+

Wang Hongrun; Wu Li; Yi Huan; Wang Biao; Wu Liwei; Gu Yuelong; Zhang Yi

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Abnormal luminescent property of Mn2+ in alpha-LiZnBO3:Mn2+

机译：α-LiZnBO3：Mn2 +中Mn2 +的异常发光特性

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Mn2+-activated red phosphor alpha-LiZnBO3:Mn2+ was synthesized by solid state reaction. ESR spectra prove that the doped ions are Mn2+. The doped Mn2+ ion is inclined to occupy Zn2+ site, which is a tetrahedral coordination. The diffuse reflection spectra indicate that alpha-LiZnBO3:Mn2+ has strong absorption in the range of 400-450 nm. Excited at 431 nm, an abnormal red emission band in the wavelength of 550-800 nm is observed, which is because of the strong crystal field induced by the distorted tetrahedral. The emission bands are centered at 647 nm, regardless of the excitation wavelength and Mn2+ doping concentration. The temperature-dependent PL results reveal that alpha-LiZnBO3:Mn2+ is thermally stable but the emission peak moves to shorter wavelength as temperature increases because of the decrease of the crystal field.

机译：通过固相反应合成了Mn2 +活化的红色荧光粉α-LiZnBO3：Mn2 +。 ESR光谱证明掺杂离子为Mn 2+。掺杂的Mn2 +离子倾向于占据Zn2 +位点，这是四面体配位。漫反射光谱表明，α-LiZnBO3：Mn2 +在400-450 nm范围内具有强吸收。在431 nm处激发时，观察到550-800 nm波长的异常红色发射带，这是由于扭曲的四面体引起的强晶体场。不管激发波长和Mn2 +掺杂浓度如何，发射带的中心都位于647 nm。随温度变化的PL结果表明，α-LiZnBO3：Mn2 +具有热稳定性，但由于晶体场的减小，随着温度升高，发射峰移至较短的波长。

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《Dalton transactions: An international journal of inorganic chemistry》 |2015年第3期|共8页
作者
Wang Hongrun; Wu Li; Yi Huan; Wang Biao; Wu Liwei; Gu Yuelong; Zhang Yi;
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Abnormal luminescent property of Mn2+ in alpha-LiZnBO3:Mn2+

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