Photoluminescence properties of broadband deep-red-emitting Na2MgAl10O17: Mn4+phosphor
Photoluminescence properties of broadband deep-red-emitting Na2MgAl10O17: Mn4+phosphor
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宽带深红光Na2MgAl10O17:Mn4荧光粉的光致发光特性
DOI：
10.1016/j.jallcom.2017.07.077
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发表时间：
2017-11-25
影响因子：
6.2
通讯作者：
Zheng, Guotai
中科院分区：
文献类型：
--
作者：
Peng, Qiying;Cao, Renping;Zheng, Guotai
采用空气中高温固相反应方法成功制备了一种新型非稀土深红光Na2MgAl10O17:Mn(4+)荧光粉。所有样品均为单一纯相，这已通过 X 射线粉末衍射图案得到证实。激发光谱在220-600 nm范围内显示出一些吸收带，这些吸收带与紫外（UV）、近紫外和蓝光发光二极管芯片的波长一致。由于Mn4+离子在八面体对称性中的E-2→(4)A(2)跃迁并辅助晶格振动，在600-810 nm范围内可以观察到激发紫外光、近紫外光和蓝光的Na2MgAl10O17:Mn4+荧光粉的深红色发射。半峰全宽 (FWHM) 类似于 105 nm。最佳Mn4+浓度约为1%。衰减曲线和时间分辨光谱表明Na2MgAl10O17:Mn4+荧光粉中只有一个Mn4+离子发光中心。通过Mn4+离子的构型坐标图对其热稳定性进行了考察和分析。 (C) 2017 Elsevier B.V. 保留所有权利。
A new non-rare-earth deep-red-emitting Na2MgAl10O17: Mn(4+)phosphor is prepared successfully by high temperature solid-state reaction method in air. All samples are a single pure phase, which is confirmed by X-ray powder diffractions patterns. Excitation spectrum shows some absorption bands in the range of 220-600 nm, which are line with the wavelength of ultraviolet (UV), near UV, and blue light-emitting diode chips. Deep-red emission of Na2MgAl10O17: Mn4+ phosphor with excitation UV, near UV, and blue light can be observed in the range of 600-810 nm due to the E-2 -> (4)A(2) transition of Mn4+ ion in octahedral symmetry with aided the lattice vibration. The full width at half maximum (FWHM) is similar to 105 nm. The optimal Mn4+ concentration is similar to 1%. Decay curve and time-resolved spectra indicate that there is only a Mn4+ ion luminescent center in Na2MgAl10O17: Mn4+ phosphor. The thermal stability is investigated and analyzed by the configuration coordinate diagram of Mn4+ ion. (C) 2017 Elsevier B.V. All rights reserved.