Temperature dependence of emission properties of sharp, zero-phonon line (ZPL) associated with ⁴T_1g →⁶A_1g transition of Mn²⁺ ions doped in LiMgPO₄ is studied, together with the Mn²⁺-concentration dependence. The ZPL is observed at 611.8 nm at temperatures below 120 K. The intensity relative to the intensity of superimposed phonon sidebands is increased in proportion to T² with increasing temperature from 18 K. The peak energy and full width at half maximum (FWHM) are increased in proportion to coth ^1/2 (hν/2k_BT). Unlike the phonon sideband emission which shows single exponential decay and decrease of decay time with increase of temperature, the ZPL emission has the fast and slow decay components and shows temperature-independent decay times. A blue shift of the ZPL peak energy is observed with increase of Mn²⁺ concentration x doped in LiMg_1−x Mn _x PO₄ from 0.0015 to 0.0050 at 18 K, while a broadening of line width is observed with increase of the concentration. Each of the peak energy and FWHM is approximated by a quadratic equation in the form a+bx+cx ². It is suggested that these results are understood by the interaction of the excited ⁴T_1g state with phonons and crystal field, from comparison with the theoretically expected formulae.

关联尖锐，零声子线（ZPL）的发光特性的温度依赖性⁴ Ť _1克→ ⁶甲_1克的Mn过渡²⁺在LiMgPO掺杂离子₄进行了研究，与MN一起²⁺ -浓度依赖性。在低于 120 K 的温度下在 611.8 nm 处观察到 ZPL。相对于叠加声子边带强度的强度随着温度从 18 K升高而与 T ²成比例增加。峰值能量和半峰全宽 (FWHM) 为与coth ^1/2 (h ν /2k _B吨）。与显示单指数衰减和随温度升高衰减时间减少的声子边带发射不同，ZPL 发射具有快速和慢速衰减分量，并显示与温度无关的衰减时间。在 18 K 时，随着掺杂在 LiMg _{1- x} Mn _x PO _{4 中}的 Mn ²⁺浓度x从 0.0015 增加到 0.0050，观察到 ZPL 峰值能量的蓝移，而随着浓度的增加，观察到线宽变宽。峰值能量和 FWHM 中的每一个都由形式为 a+b x +c x ²的二次方程近似。这表明这些结果可以通过激发的相互作用来理解 ⁴ T _1g态与声子和晶体场，与理论预期公式的比较。