Luminescence performance of Cr3+ doped and Cr3+, Mn4+ co-doped La2ZnTiO6 phosphors
Luminescence performance of Cr3+ doped and Cr3+, Mn4+ co-doped La2ZnTiO6 phosphors
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Cr3掺杂及Cr3、Mn4共掺杂La2ZnTiO6荧光粉的发光性能
DOI：
10.1016/j.materresbull.2019.110764
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发表时间：
2020-04-01
影响因子：
5.4
通讯作者：
Xiao, Siguo
中科院分区：
文献类型：
--
作者：
Ou, Jinhong;Yang, Xiaoliang;Xiao, Siguo
采用固相反应法制备了Cr3+掺杂和Cr3+， Mn4+共掺杂的La2ZnTiO6荧光粉，并对其发光性能进行了研究。La2ZnTiO6: Cr3+荧光粉在300 ~ 500 nm光谱范围内的紫外光激发下，呈现出以740 nm为中心的红色发光带。Cr3+、Mn4+共掺杂的荧光粉在740 nm （Cr3+）和710 nm （Mn4(+)）处均有发光，且在337 nm处激发的总发光强度随着Mn4+离子的引入提高了1.6倍。随着激发波长从330 nm增加到400 nm，共掺杂荧光粉在710 nm处的发射强度与740 nm处的发射强度之比单调增加。所制备的荧光粉的性能表明其可用于led的室内培养和波长检测。
Cr3+ doped and Cr3+, Mn4+ co-doped La2ZnTiO6 phosphors were prepared using solid-state reaction method and their luminescence performance has been investigated. La2ZnTiO6: Cr3+ phosphor exhibits red luminescence band centred at 740 nm when excited with light in spectral range from ultraviolet to blue and green (300 nm-500 nm). Both emissions at 740 nm (Cr3+) and at 710 nm (Mn4(+)) can be observed in the Cr3+, Mn4+ co-doped phosphor and its total luminescence intensity excited at 337 nm is enhanced to 1.6 times with the introduction of Mn4+ ions. The ratio of emission intensity at 710 nm to that at 740 nm in the co-doped phosphor increases monotonically as excitation wavelength increases from 330 to 400 nm. The performance of the developed phosphors in present work indicates that they might be used in indoor cultivation of LEDs and wavelength detection.