Rare-earth ions play an important role in eco-friendly solid-state lighting for the lighting industry. In the present study we were interested in Eu3+ ion-doped inorganic phosphors for near ultraviolet (UV) excited light-emitting diode (LED) applications. Eu3+ ion-activated SrYAl3 O7 phosphors were prepared using a solution combustion route at 550°C. Photoluminescence characterization of SrYAl3 O7 :Eu3+ phosphors showed a 612 nm emission peak in the red region of the spectrum due to the 5 D0 →7 F2 transition of Eu3+ ions under excitation at 395 nm in the near-UV region and at the 466 nm blue excitation wavelength. These red and blue emissions are supported for white light generation for LED lighting. Structure, bonding between each element of the sample and morphology of the sample were analysed using X-ray diffraction (XRD) and scanning electron microscopy (SEM), which showed that the samples were crystallized in a well known structure. The phosphor was irradiated with a 60 Co-γ (gamma) source at a dose rate of 7.2 kGy/h. Thermoluminescence (TL) studies of these Eu3+ -doped SrYAl3 O7 phosphors were performed using a Nucleonix TL 1009I TL reader. Trapping parameters of this phosphor such as activation energy (E), order of kinetics (b) and frequency factor (s) were calculated using Chen's peak shape method, the initial rise method and Ilich's method.

中文翻译：

---

Eu3 +掺杂SrYAl3 O7荧光粉的合成与发光研究。

稀土离子在照明行业的环保型固态照明中起着重要作用。在本研究中，我们对用于近紫外（UV）激发的发光二极管（LED）应用的Eu3 +离子掺杂无机荧光粉感兴趣。Eu3 +离子活化的SrYAl3O7荧光粉是通过在550°C下的溶液燃烧路线制备的。SrYAl3 O7：Eu3 +荧光粉的光致发光特性在光谱的红色区域显示了612 nm的发射峰，这是由于Eu3 +离子在395 nm附近的紫外光激发下和466 nm蓝色的激发下从5 D0→7 F2跃迁激发波长。支持这些红色和蓝色发射，以产生用于LED照明的白光。结构，使用X射线衍射（XRD）和扫描电子显微镜（SEM）分析了样品各元素之间的键合和样品的形态，结果表明样品以众所周知的结构结晶。用60Co-γ（γ）光源以7.2 kGy / h的剂量率照射荧光粉。使用Nucleonix TL 1009I TL阅读器对这些Eu3 +掺杂的SrYAl3 O7荧光粉进行热致发光（TL）研究。使用Chen's峰形法，初始上升法和Ilich's法计算该荧光粉的诱捕参数，例如活化能（E），动力学阶数（b）和频率因子（s）。使用Nucleonix TL 1009I TL阅读器对这些Eu3 +掺杂的SrYAl3 O7荧光粉进行热致发光（TL）研究。使用Chen's峰形法，初始上升法和Ilich's法计算该荧光粉的诱捕参数，例如活化能（E），动力学阶数（b）和频率因子（s）。使用Nucleonix TL 1009I TL阅读器对这些Eu3 +掺杂的SrYAl3 O7荧光粉进行热致发光（TL）研究。使用Chen's峰形法，初始上升法和Ilich's法计算该荧光粉的诱捕参数，例如活化能（E），动力学阶数（b）和频率因子（s）。