祝贺梁晓娟和向卫东老师指导研究生在materials research bulletin上发表学术论文-威尼斯人888

标题：luminescence properties and thermal stability of red phosphor mg2tio4:mn4 additional zn2 sensitization for warm w-leds

abstact：currently, the exploration of non-rare-earth mn4 -activated oxide red phosphor is of great demand for phosphor-converted warm white-light-emitting diodes (w-leds). here, mg2tio4:mn4 and mg2tio4: mn4 ,zn2 red phosphors were prepared using a solid-state reaction route and exhibited a strong red emission peaked at 657 nm. the microstructure and luminescent performance of the obtained red phosphors were investigated. additionally, the concentration quenching and nephelauxetic effect of mn4 in the mg2tio4 host lattice were evaluated in detail. moreover, mg2tio4:mn4 ,zn2 manifests an enhanced luminescence intensity compared to the sample without zn2 doping with a quantum efficiency of 38.2% and good thermal resistance of de = 0.36 ev. as proof of concept, when we incorporated mg2tio4:mn4 ,zn2 and commercial yag:ce3 into the package of a blue led chip, a warm white light was produced with a high colour rendering index and a low correlated colour temperature; thus, they have promise as an application as a colour converter in the field of warm w-leds.

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