煅烧温度对溶胶-凝胶法制备Sr2CeO4: Eu3+纳米荧光粉光致发光强度的影响

Paleena Thulimilli
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引用次数: 5

摘要

采用溶胶-凝胶法制备了纯sr2ce4荧光粉和掺铕(0.5、1.0、1.5、2.0、4.0 mol%)荧光粉的sr2ce4。利用x射线衍射(XRD)、扫描电镜(SEM)和光致发光(PL)光谱对纯sr2ceo4和sr2ceo4: eu3 +纳米荧光粉进行了表征。众所周知,材料的结晶度随着煅烧温度的升高而增加。因此,为了研究煅烧温度对溶胶-凝胶合成的荧光粉(sr2ce4: eu3 + (2.0 mol%))的影响,将该荧光粉分别在1000、1100和1200℃的不同温度下煅烧2h,发现sr2ce4: eu3 +纳米荧光粉的光致发光强度随着煅烧温度的升高而增加。sr2 ce4: eu3 +纳米荧光粉对不同铕浓度的红光具有良好的颜色可调性,因此它可以成为LED照明应用的有前途的候选材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Calcination Temperature on Photoluminescence Intensity of Sol-Gel prepared Sr2CeO4: Eu3+ Nano Phosphor
Pure Sr 2 CeO 4 phosphor and Sr 2 CeO 4 doped with europium (0.5, 1.0, 1.5, 2.0, 4.0 mol%) phosphor were synthesized by the sol-gel method. X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL) spectra were used to characterize the pure Sr 2 CeO 4 and Sr 2 CeO 4 :Eu 3+ nano phosphor. It is a well-known fact that the crystallinity of the material increases with increase in the calcination temperature. Hence to study the effect of calcination temperature on the sol-gel synthesized phosphor (Sr 2 CeO 4 :Eu 3+ (2.0 mol%)), the phosphor was fired at various temperatures 1000, 1100 and 1200 ℃ for 2hrs respectively and it was found that the photoluminescence intensity of Sr 2 CeO 4 :Eu 3+ nano phosphor increases with the increase of calcination temperature. Sr 2 CeO 4 :Eu 3+ nano phosphor has an excellent colour tunability of red light with different concentration of europium and hence it can be a promising candidate for LED lighting Applications.
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