首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Effect of Boric Acid Flux and Drying Control Chemical Additive on the Characteristics of Y_2O_3:Eu Phosphor Particles Prepared by Spray Pyrolysis
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Effect of Boric Acid Flux and Drying Control Chemical Additive on the Characteristics of Y_2O_3:Eu Phosphor Particles Prepared by Spray Pyrolysis

机译:硼酸通量和干燥控制化学添加剂对喷雾热解法制备Y_2O_3:Eu荧光粉颗粒特性的影响

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摘要

Y_2O_3:Eu phosphor particles with a spherical shape, a fine size, and high brightness under vacuum ultraviolet (VUV) illumination were prepared by spray pyrolysis. The polymeric precursors were needed to modify the spray solution to prepare spherical particles. The use of only flux with the polymeric precursors did not produce dense and spherical Y_2O_3:Eu particles; that is, the produced particles were very porous. The addition of both a drying control chemical additive (DCCA) and boric acid to a spray solution containing polymeric precursors was found to produce Y_2O_3:Eu phosphor particles with a dense structure while maintaining the spherical morphology. According to X-ray diffraction (XRD) analysis, the DCCA induced an enhancement of crystallinity. The use of boric acid flux improved the photoluminescence (PL) intensity under VUV illumination. In addition, the use of both boric acid flux and a DCCA with polymeric precursors further improved the PL intensity owing to the enhancement of the morphology and the crystallinity.
机译:通过喷雾热解制备了球形,细小,高亮度的Y_2O_3:Eu荧光粉。需要聚合物前体来改变喷雾溶液以制备球形颗粒。仅将助熔剂与聚合物前体一起使用不会产生致密且球形的Y_2O_3:Eu颗粒。即,产生的颗粒是非常多孔的。发现将干燥控制化学添加剂(DCCA)和硼酸两者都添加到含有聚合物前体的喷雾溶液中,可以产生具有致密结构的Y_2O_3:Eu荧光粉颗粒,同时保持球形形态。根据X射线衍射(XRD)分析,DCCA诱导了结晶度的提高。硼酸通量的使用改善了在VUV照射下的光致发光(PL)强度。另外,由于形态和结晶度的增强,硼酸助熔剂和DCCA与聚合物前体一起使用进一步改善了PL强度。

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