Abstract 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.

中文翻译：

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Cr3+掺杂和Cr3+、Mn4+共掺杂La2ZnTiO6荧光粉的发光性能

摘要 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+ 荧光粉在被紫外到蓝色和绿色 (300 nm–500 nm) 光谱范围内的光激发时显示出以 740 nm 为中心的红色发光带。在 Cr3+、Mn4+ 共掺杂磷光体中可以观察到 740 nm (Cr3+) 和 710 nm (Mn4+) 的发射，并且随着 Mn4+ 离子的引入，其在 337 nm 激发的总发光强度增强到 1.6 倍。随着激发波长从 330 nm 增加到 400 nm，共掺杂磷光体中 710 nm 与 740 nm 的发射强度之比单调增加。