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首页> 外文期刊>Optical materials >Luminescence properties of Sr2Mg3P4O15:Mn2+ phosphor and the improvement by co-doping Bi3+
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Luminescence properties of Sr2Mg3P4O15:Mn2+ phosphor and the improvement by co-doping Bi3+

机译：Sr2Mg3P4O15：Mn2+荧光粉的发光性能及共掺杂Bi3+的改进

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摘要

Sr2Mg3P4O15:R (R = Bi3+, Mn2+, and Bi3+/Mn2+) phosphors are synthesized by a solid-state reaction method in air. Sr2Mg3P4O15:Bi3+ phosphor with excitation 380 nm shows blue light and its emission band peaking at similar to 445 nm is observed. Under excitation at 355 and 416 nm, Sr2Mg3P4O15:Mn2+ phosphor shows red emission with a single broad emission band peaking at similar to 630 rim in the range of 500-800 rim owing to the T-4(1)(G) -amp; (6)A(1) transition of the Mn2+ ion. The optimal Mn2+ ion content in Sr2Mg3P4O15:Mn2+ phosphor is similar to 0.05 and the lifetime of Sr2Mg3P4O15:0.05Mn(2+) phosphor is similar to 6.17 ms. After Bi3+ ion is co-doped, emission intensity of Sr2Mg3P4O15:Mn2+ phosphor can be enhanced obviously due to energy transfer (ET) from Bi3+ to Mn2+, which is confirmed by the luminescence properties and lifetimes of Sr2Mg3P4O15:Bi3+, Mn2+ phosphor. Luminous mechanism and ET process of Sr2Mg3P4O15:Bi3+, Mn2+ phosphor are explained by the simple energy level diagram of Bi3+ and Mn2+ ions.
机译：Sr2Mg3P4O15：R（R = Bi3+、Mn2+ 和 Bi3+/Mn2+）荧光粉在空气中通过固相反应法合成。激发波长为380 nm的Sr2Mg3P4O15：Bi3+荧光粉显示蓝光，其发射带峰值接近445 nm。在355和416 nm的激发下，由于Mn2+离子的T-4（1）（G）- （6）A（1）跃迁，Sr2Mg3P4O15：Mn2+荧光粉在500-800 nm范围内显示出红色发射，单个宽发射带在类似于630边缘的峰值，在500-800边缘范围内。Sr2Mg3P4O15：Mn2+荧光粉中最佳Mn2+离子含量为0.05，Sr2Mg3P4O15：0.05Mn（2+）荧光粉寿命为6.17 ms。Bi3+离子共掺杂后，Sr2Mg3P4O15：Mn2+荧光粉的发射强度明显增强，这是由于Bi3+到Mn2+的能量转移（ET），Sr2Mg3P4O15：Bi3+、Mn2+荧光粉的发光性能和寿命证实了这一点。Sr2Mg3P4O15：Bi3+、Mn2+荧光粉的发光机理和ET过程用Bi3+和Mn2+离子的简单能级图来解释.

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