Low temperature synthesis and photoluminescence properties of Mn4+-doped La2MgTiO6 deep-red phosphor with a LiCl flux

Preparation, luminescence properties, and application of temperature sensing and anti‐counterfeiting of La2MgTiO6:Yb3+/Ln3+/Mn4+

“…The XRD patterns of La 2 MgTiO 6 :Yb 3+ /Ln 3+ (Ln 3+ = Er 3+ /Ho 3+ /Tm 3+ ) and La 2 MgTiO 6 :Yb 3+ /Mn 4+ /Ln 3+ in Figure 1A show reflections consistent with LMT (JCPDS No. 70‐4252) 33 without impurity peaks, suggesting that the dopants had successfully entered the LMT host. Rietveld refinement of the powder diffraction data was carried out to obtain the unit cell parameters (Figure 1B) and yielded good residual factors ( R p = 5.67%, R wp = 7.44%, and χ 2 = 1.626).…”

Structure analysis, tuning photoluminescence and enhancing thermal stability on Mn4+-doped La2-xYxMgTiO6 red phosphor for agricultural lighting

“…Based on this background, many measures have been adopted to ameliorate the luminescent properties of LMT:Mn 4+ : (Ⅰ) choosing applicable flux. Liao et al reported that LiCl could improve the thermal stability and regulate the morphology of LMT:Mn 4+ [25]; (Ⅱ) adopting energy transfer strategy. Lin and colleagues found that co-doping with Bi 3+ can improve the thermal stability and IQE of LMT:Mn 4+ [20].…”

HF‐free molten salt route for synthesis of highly efficient and water‐resistant K2SiF6:Mn4+ for warm white LED

“…The synthesis of luminescent materials by Molten salt method also attracted wide attention. 9,29,30 The essence of molten salt method is to grow crystals from a molten salt agent at a high temperature, and the process is similar to that of growing crystals from an aqueous solution. Therefore, it is possible to prepare Mn 4+ -doped fluoride red phosphor by free-HF melting salt method.…”

“…The non‐rare‐earth ion Mn 4+ has attracted our attention because its emission peak is located in the red region of 620 to 750 nm under blue and ultraviolet light excitation 9−11 . Among the Mn 4+ ‐doped red phosphors, the emission peak of the Mn 4+ ‐doped fluoride is located at 620 to 640 nm due to the weak coordination bond.…”

“…Molten salt synthesis is a well‐established, low‐cost technique of forming a desirable compound in a flux of low melting point. The synthesis of luminescent materials by Molten salt method also attracted wide attention 9,29,30 . The essence of molten salt method is to grow crystals from a molten salt agent at a high temperature, and the process is similar to that of growing crystals from an aqueous solution.…”