In this paper,MgAl2O4∶Mn4+phosphor was successfully prepared by high-temperature solid-state method.Through the study of excitation spectrum and emission spectrum,it was confirmed that the sample can be effectively excited by ultraviolet and blue light of 250-550 nm,and achieve high brightness 600-800 nm red radiation.The emission peak of the sample is located at 652 nm,corresponding to the 2Eg→ 4A2g transition of Mn4+ions.At the same time,the thermal stability of the samples was analyzed in detail by temperature-dependent spectroscopy.The luminescence mechanism of the sample is also given.Finally,the down-conversion emission spectrum of the sample is compared with the absorption spectrum of the photosensitive pigment Pr,which proves that the MgAl2O4∶Mn4+ phosphor has application potential in the field of plant growth lighting.
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