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在空气中1100℃温度下,对中国新疆天然方钠石(Na8Al6Si6O24Cl2)和1wt%EuF3的混合粉末加热30分钟,制备了Na8Al6Si6O24Cl2:Eu发光材料.用X射线粉末衍射(XRD)研究了发光粉的晶体结构.观测到了荧光粉在8～300K的光致发射光谱(PL)和激发光谱,发现了随着温度的降低,发射光谱和激发光谱都发生移动变化.在8K温度,294nm激发下的发射光谱包括由Eu3+中4f6(5 D0)→4f6(7 FJ)(J=0,1,2,3,4)跃迁产生的,峰值在581～625nm间的光谱带和由来Eu2+的4f65d-4f7跃迁产生的,峰值在492nm的光谱带.在8K温度下,487,496,520,547,560,580,600,613nm监测的激发光谱的峰值有移动.613nm监测下,350～450nm之间的系列锐谱线与Eu3+离子的f-f高能级跃迁吸收的特征激发谱线相对应.
The Na8Al6Si6O24Cl2: Eu phosphor was prepared by heating the mixed powder of natural sodalite (Na8Al6Si6O24Cl2) and 1wt% EuF3 in the air at 1100 ℃ for 30 minutes in the air, and the luminescence properties of the luminescent powders were investigated by X-ray powder diffraction (XRD) Crystal structure.The photoluminescence spectra (PL) and excitation spectra of the phosphors at 8 ~ 300K were observed and the emission spectra and excitation spectra were observed to change with the decrease of temperature.At the 8K temperature, the emission at 294nm excitation The spectra include the bands between 581 and 625 nm resulting from the transition of 4f6 (5 D0) → 4f6 (7 FJ) (J = 0,1,2,3,4) in Eu3 + and the 4f65d-4f7 transition from Eu2 + Peak at 492 nm.At the 8K temperature, the peak of the excitation spectrum monitored at 487, 496, 520, 547, 560, 580, 600 and 613 nm was shifted.The ff high energy level transition of the series of sharp lines between 350 and 450 nm and Eu3 + The characteristic excitation line corresponds.