White light generation under violet-blue excitation from tunable green-to-red emitting Ca2MgSi2O7:Eu,Mn through energy transfer
White light generation under violet-blue excitation from tunable green-to-red emitting Ca2MgSi2O7:Eu,Mn through energy transfer
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DOI：
10.1063/1.2722670
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发表时间：
2007-04-16
影响因子：
4
通讯作者：
Chen, Teng-Ming
中科院分区：
文献类型：
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作者：
Chang, Chun-Kuei;Chen, Teng-Ming
在Ca 2 MgSi 2 O 7基质中，Eu 2+向Mn 2+的能量传递可以产生黄绿色到橙子红色的发光。Eu ~（2+）掺杂的Ca_2MgSi_2O_7在528 nm处具有较宽的绿色发射带，Mn ~（2+）掺杂的Ca_2MgSi_2O_7在602 nm处具有较宽的红色发射带。研究表明，在Ca_2MgSi_2O_7：Eu，Mn荧光粉中，Eu ~（2+）向Mn ~（2+）的能量传递是通过偶极-四极共振机制进行的。通过预先设计的发射波长可调的Ca_2MgSi_2O_7：Eu，Mn荧光粉和紫-蓝光源的组合，可以产生具有不同色调的白色光，其色调取决于Mn ~（2+）的含量。(c)2007年，美国物理学会。
Yellowish green-to-orange red emission can be generated by energy transfer from Eu2+ to Mn2+ in the Ca2MgSi2O7 host matrix. Eu2+-doped Ca2MgSi2O7 shows a broad green emission band centering at 528 nm and Mn2+-doped Ca2MgSi2O7 exhibits a red emission at around 602 nm. The authors have demonstrated that the mechanism of energy transfer from Eu2+ to Mn2+ in Ca2MgSi2O7:Eu,Mn phosphor is a resonant type via a dipole-quadrupole mechanism. They have also shown that the white light with varied hue, depending on contents of Mn2+, is generated by combination of predesigned emission wavelength-tunable Ca2MgSi2O7:Eu,Mn phosphors and violet-blue light source. (c) 2007 American Institute of Physics.