SrAl2O4: dy3 +荧光粉的温度依赖特性

IF 0.9 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Optoelectronic and Biomedical Materials Pub Date : 2020-07-01 DOI:10.15251/jobm.2020.123.51

S. Tongbram, S. D. Singh, B. Tongbram, B. Sharma

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引用次数: 0

摘要

我们报道了Dy3+掺杂SrAl2O4荧光粉的详细温度依赖特性。采用沉淀法合成的荧光粉在800ºC、900ºC和1000ºC三种不同温度下退火。采用XRD、SEM、TEM、RAMAN、FTIR对样品进行分析。所观察到的光致发光发射由宿主SrAl2O4和掺杂剂Dy3+产生的峰组成。随着退火温度的升高，晶粒尺寸分别为27.22nm、29.74nm和31.24nm。SEM, TEM图像显示晶体呈近球形，棒状，SAED证实晶体为单晶。CIE分析结果表明，在三种退火温度下发现颜色坐标非常接近白色，这在技术开发领域具有优势。

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TEMPERATURE DEPENDENT CHARACTERISTICS OF SrAl2O4:Dy 3+PHOSPHOR

We report the detailed temperature-dependent characteristics of Dy3+ doped SrAl2O4 phosphor. The phosphor synthesised using precipitation method was annealed at three different temperatures, specifically 800ºC, 900ºC, and 1000ºC. The three samples were analyzed using XRD, SEM, TEM, RAMAN, and FTIR. The observed photoluminescence emissions were consisting of peaks arising from the host SrAl2O4 as well as the dopant Dy3+. The crystallite sizes were found to be 27.22nm, 29.74nm, and 31.24nm, respectively, with the increase in annealing temperature. SEM, TEM images showed nearspherical, rod-like shapes of the crystals, and SAED confirmed the crystals were single-crystal. CIE analysis results showed that the colour coordinate was found to be very close to white colour in the three annealing temperatures, which is an advantage in the field of technology development.

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Journal of Optoelectronic and Biomedical Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

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