Mn-doped tunable wide rectangular red fluorescent material and preparation method thereof

The invention discloses a novel Mn < 4 + >-doped tunable wide rectangular red fluorescent material and a preparation method thereof. The chemical formula of the novel Mn < 4 + >-doped tunable wide rectangular red fluorescent material is xMn < 4 + >: Li3LaMgTi (1-x) O6 (0.2 at% < = xlt; the fluorescent material is prepared by taking MnO2, Li2CO3, La2O3, MgO and TiO2 as raw materials, uniformly dry-grinding the raw materials in an agate mortar to obtain a biscuit, and carrying out high-temperature solid-phase sintering on the obtained biscuit. The obtained red fluorescent material has the characteristics of wide rectangle and tunable fluorescence, a rectangular fluorescence spectrum with the FWHM width reaching 100 nm can be obtained under excitation of a 358 nm LED, the spectrum intensity can be adjusted according to actual needs, and the red fluorescent material has good application prospects in the field of plant cultivation. 本发明公开了一种新型Mn4+掺杂的可调谐宽矩形红色荧光材料及其制备方法，其化学式为xMn4+:Li3LaMgTi(1-x)O6(0.2at%≤x