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研究了具有高发光量子效率的(Ba,Sr)3MgSi2O8:Eu2+,Mn2+同步发射红蓝双光的荧光材料的光强随温度的变化关系。该荧光材料的同步红蓝光发射光谱由峰值为430nm的Eu2+的蓝光和660nm的Mn2+的红光两部分构成,且与植物光合吸收光谱和光合有效光谱相匹配。在293K~473K温度范围内,红蓝光均出现了热猝灭,红光峰位随着温度的升高出现蓝移而蓝光的峰位保持不变,反映了Mn2+在基质中多格位占据和Eu2+-Mn2+之间的能量传递过程中电子与声子的相互作用本质。结果有助于加深对(Ba,Sr)3MgSi2O8荧光材料Eu2+-Mn2+间能量传递机制和热稳定性的理解,对完善和发展生态照明荧光材料和器件具有参考价值。
The relationship between the light intensity and the temperature of the fluorescent materials with (Ba, Sr) 3MgSi2O8: Eu2 + and Mn2 + emitting simultaneously red and blue light with high luminescence quantum efficiency was studied. The red and blue emission spectrum of the fluorescent material is composed of two parts of Eu2 + peak at 430nm and Mn2 + at 660nm, which is compatible with photosynthetic absorption spectrum and photosynthetic efficiency of plant. In 293K ~ 473K temperature range, the red and blue light all appeared the thermal quenching, the red peak position with the rise of temperature appeared blue shift while the blue peak position remained unchanged, reflecting the Mn2 + in the matrix multi-lattice occupancy and Eu2 + -Mn2 + energy transfer between the electron and the phonon interaction essence. The results will help to deepen the understanding of energy transfer mechanism and thermal stability of (Ba, Sr) 3MgSi2O8 fluorescent material Eu2 + -Mn2 +, which is of reference value for the improvement and development of eco-luminescent fluorescent materials and devices.