祝贺潘跃晓老师指导研究生在journal of materials chemistry c上发表学术论文-威尼斯人888

标题：designed synthesis, morphology evolution, and enhanced photoluminescence of a highly efficient red dodec-fluoride phosphor li3na3ga2f12:mn4 for warm wleds

abstact：red phosphors of mn4 doped dodec-fluorides li3na3ga2f12:mn4 (lngf:mn) with various morphologies have been synthesized from k2mnf6, lif, naf, and ga2o3 in hf at room temperature with excessive lif and naf relative to the stoichiometric composition in lngf:mn. the formation mechanism of the red phosphor lngf:mn has been discussed based on detailed experimental results compared with the identified phosphor li3na3al2f12:mn4 (lnaf:mn). the optical properties of lngf:mn have been systematically investigated compared with the red phosphors li3gaf6:mn4 (lgf:mn), na3gaf6:mn4 (ngf:mn), and lnaf:mn in detail. it is observed that the as-obtained phosphor lngf:mn exhibits superior properties in chromaticity coordinates and a high luminescence efficiency with a strong potential in enhancing the performance of solid-state lighting. the hf-concentration-dependent morphologies of the phosphor lngf:mn have been investigated by scanning electron microscopy (sem). the luminescence of the phosphor lngf:mn has been enhanced by optimizing the synthetic parameters, such as the concentrations of hf and k2mnf6. the white light-emitting diode (wled) encapsulated with the as-obtained red phosphor lngf:mn and commercial yellow one y3al5o12:ce3 (yag:ce) on a gan chip produces a warm white light with a color rendering index (cri) of 91.32 at a correlated color temperature (cct) of 3986.08 k.

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