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Luminescence and Energy Transfer of Color-Tunable Y2Mg2Al2Si2O12:Eu2+,Ce3+ Phosphors
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2021-04-03 , DOI: 10.1021/acs.inorgchem.1c00317 Xiangting Zhang 1 , Dan Zhang 1 , Baofeng Zheng 1 , Zhibo Zheng 1 , Yanhua Song 1 , Keyan Zheng 1 , Ye Sheng 1 , Zhan Shi 2 , Haifeng Zou 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2021-04-03 , DOI: 10.1021/acs.inorgchem.1c00317 Xiangting Zhang 1 , Dan Zhang 1 , Baofeng Zheng 1 , Zhibo Zheng 1 , Yanhua Song 1 , Keyan Zheng 1 , Ye Sheng 1 , Zhan Shi 2 , Haifeng Zou 1
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Color-tunable phosphors can be obtained through codoping strategies and energy transfer regulation. Ce3+ and Eu2+ are the most common and effective activator ions used in phosphor materials. However, the energy transfer from Eu2+ to Ce3+ is rarely reported. In this work, Y2Mg2Al2Si2O12(YMAS):Eu2+,Ce3+ phosphors were successfully synthesized, which was confirmed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Rietveld refinement, scanning electron microscopy (SEM) and element mapping images, and spectral information. The luminescent color of YMAS:Eu2+,Ce3+ phosphors could be tuned from blue to cyan to light green to yellow-green and finally to green-yellow, which was achieved by adjusting the energy transfer between different dopants. The energy transfer from Eu2+ to Ce3+ was confirmed by photoluminescence spectra and fluorescence decay curves. Within the experimental gradient, the energy transfer efficiency could reach up to 48%. At 373 K, the Y1.99Mg1.99Al2Si2O12:0.01Eu2+,0.01Ce3+ (YMAS:0.01Eu2+,0.01Ce3+) phosphor exhibited a total integral emission loss of only 8%, and the emission peak intensity decreased to 95%, indicating the excellent thermal stability. The white light-emitting diode (WLED) fabricated by the YMAS:0.01Eu2+,0.01Ce3+ phosphor has the same level correlated color temperature (CCT = 5841 K), greatly improved color rendering index (Ra = 87.8), and higher quality white light color (CIE = (0.3258, 0.3214)) than the WLED made by the YMAS:0.01Eu2+ phosphor, indicating that the performance of the phosphor was significantly improved by introducing Ce3+. This work provides an effective guide for the design and development of highly efficient color-tunable phosphors involving energy transfer from Eu2+ to Ce3+ in some specific materials, such as garnet structures.
中文翻译：
可调色Y 2 Mg 2 Al 2 Si 2 O 12：Eu 2 +，Ce 3+荧光粉的发光和能量转移
可以通过共掺杂策略和能量转移调节来获得颜色可调的磷光体。Ce 3+和Eu 2+是用于荧光粉材料的最常见和最有效的活化剂离子。然而，极少报道了从Eu 2+到Ce 3+的能量转移。在这项工作中，Y 2 Mg 2 Al 2 Si 2 O 12（YMAS）：Eu 2 +，Ce 3+通过X射线衍射（XRD），X射线光电子能谱（XPS），Rietveld精制，扫描电子显微镜（SEM）和元素映射图像以及光谱信息证实了磷光体的合成成功。YMAS：Eu 2 +，Ce 3+荧光粉的发光颜色可以从蓝色变为青绿色，从浅绿色变为黄绿色，最后变为绿黄色，这是通过调节不同掺杂剂之间的能量转移来实现的。通过光致发光光谱和荧光衰减曲线证实了从Eu 2+到Ce 3+的能量转移。在实验梯度内，能量转移效率可以达到48％。在373 K下，Y 1.99 Mg 1.99 Al2 Si 2 O 12：0.01Eu 2 +，0.01Ce 3+（YMAS：0.01Eu 2 +，0.01Ce 3+）荧光粉的总积分发射损耗仅为8％，发射峰强度降至95％，表明优异的热稳定性。由YMAS：0.01Eu 2 +，0.01Ce 3+荧光粉制成的白色发光二极管（WLED）具有相同水平的相关色温（CCT = 5841 K），显着提高了显色指数（R a = 87.8），以及比YMAS的WLED：0.01Eu 2+更高质量的白光颜色（CIE =（0.3258，0.3214））荧光粉，表明通过引入Ce 3+显着改善了荧光粉的性能。这项工作为设计和开发高效的颜色可调荧光粉提供了有效的指导，这些荧光粉涉及在某些特定材料（例如石榴石结构）中从Eu 2+到Ce 3+的能量转移。
更新日期：2021-04-19
中文翻译：
可调色Y 2 Mg 2 Al 2 Si 2 O 12：Eu 2 +，Ce 3+荧光粉的发光和能量转移
可以通过共掺杂策略和能量转移调节来获得颜色可调的磷光体。Ce 3+和Eu 2+是用于荧光粉材料的最常见和最有效的活化剂离子。然而，极少报道了从Eu 2+到Ce 3+的能量转移。在这项工作中，Y 2 Mg 2 Al 2 Si 2 O 12（YMAS）：Eu 2 +，Ce 3+通过X射线衍射（XRD），X射线光电子能谱（XPS），Rietveld精制，扫描电子显微镜（SEM）和元素映射图像以及光谱信息证实了磷光体的合成成功。YMAS：Eu 2 +，Ce 3+荧光粉的发光颜色可以从蓝色变为青绿色，从浅绿色变为黄绿色，最后变为绿黄色，这是通过调节不同掺杂剂之间的能量转移来实现的。通过光致发光光谱和荧光衰减曲线证实了从Eu 2+到Ce 3+的能量转移。在实验梯度内，能量转移效率可以达到48％。在373 K下，Y 1.99 Mg 1.99 Al2 Si 2 O 12：0.01Eu 2 +，0.01Ce 3+（YMAS：0.01Eu 2 +，0.01Ce 3+）荧光粉的总积分发射损耗仅为8％，发射峰强度降至95％，表明优异的热稳定性。由YMAS：0.01Eu 2 +，0.01Ce 3+荧光粉制成的白色发光二极管（WLED）具有相同水平的相关色温（CCT = 5841 K），显着提高了显色指数（R a = 87.8），以及比YMAS的WLED：0.01Eu 2+更高质量的白光颜色（CIE =（0.3258，0.3214））荧光粉，表明通过引入Ce 3+显着改善了荧光粉的性能。这项工作为设计和开发高效的颜色可调荧光粉提供了有效的指导，这些荧光粉涉及在某些特定材料（例如石榴石结构）中从Eu 2+到Ce 3+的能量转移。
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