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中文摘要：
研究了2.45 GHz微波灼烧(Ba,Sr)3MgSi2O8:Eu2+,Mn2+荧光粉的非热效应对Mn2+离子660 nm红光发射强度的影响。在相同的加热温度条件下,增加微波场的输出功率,微波非热效应导致Eu2+离子蓝光的跃迁概率增加,Eu2+通过(Ba,Sr)3MgSi2O8基质晶格把能量传递给Mn2+,进而使Mn2+的跃迁概率增加,导致红光发射增强。提出了一种微波场非热效应对能量传递影响的新观点,认为在微波加热过程中强微波磁场可能会对像Mn2+这样具有顺磁性的激活剂离子的能级结构和能量传递性质产生干扰作用。
英文摘要：
(Ba,Sr) 3MgSi2O8:Eu2 +,Mn2 + phosphor was synthesized by using 2.45 GHz high temperature microwave(MW) at a given firing temperature.The microwave non-thermal effect on the photoluminescence intensity of 660 nm emission was investigated.With an increase of MW power supply to reach an identical holding firing temperature,non-thermal MW effect leads to increasing transition probability of Eu2 + blue emission and indirect transition probability of Mn2 + red band emission with aid of energy transfer from Eu2 + via(Ba,Sr) 3MgSi2O8 host lattice.A modified energy level diagram was proposed to address this disturbing issue of MW energy attribute.This non-thermal MW effect suggests that a strong magnetic field may apply a disturbance effect on the structure and transition properties of the paramagnetic ions like Mn activator in microwave firing procedure.
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