Rapid synthesis of YAG phosphor by facile mechanical method

Rapid synthesis of YAG phosphor by facile mechanical method
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简便的机械法快速合成YAG荧光粉

DOI:
10.1111/ijac.13861
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发表时间:
2022
影响因子:
2.1
通讯作者:
Makio Naito
Makio Naito
中科院分区:
材料科学3区
文献类型:
--
作者:
Akira Kondo;Takahiro Kozawa;Toshihiro Ishikawa;Makio Naito

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本研究利用无外加热、无熔剂的研磨机,采用机械法合成了白光二极管用Y铝石榴石(YAG):Ce~(3+)荧光粉。以Y_2O_3、Al_2O_3、CeO_2为原料,在不使用任何助熔剂的情况下,以较高的机械能实现了YAG:Ce3+的合成。经5min处理后的粉末的X-射线衍射图表明,经处理的粉末的峰被清晰地识别出来。粉碎室在加工过程中的最高温度为240℃。用机械方法获得的荧光粉在还原气氛下机械处理的样品的内量子产率为65%。所合成的粉末具有由亚微米级的颗粒组成的颗粒状结构,有利于发光二极管器件的制备。
In this study, synthesis of yttrium aluminum garnet (YAG):Ce3+phosphor powders for white light emitting diodes was investigated by mechanical method using the attrition‐type mill with no external heating and no flux in dry phase. High mechanical energy input to the starting powder mixture of Y2O3, Al2O3and CeO2achieved the synthesis of YAG:Ce3+without any flux materials. X‐ray diffraction patterns of the processed powders after 5 min processing revealed the peaks of YAG were clearly identified. The maximum temperature of the mill chamber during the processing was 240℃. The YAG phosphor obtained by the mechanical method revealed the internal quantum yield of 65% in the case of the sample mechanically processed under a reducing atmosphere. The synthesized powder showed granule structure consisting of submicron size of YAG particles, which is better handling for the fabrication of light emitting diode devices.
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