Dhavamurthy M, Vinothkumar P, Mohapatra Manoj, Suresh Antony, Murugasen Priya
Department of Physics, St. Joseph's College of Engineering and Technology, Tanjore 613403, India.
Department of Physics, Saveetha Engineering College, Thandalam, Chennai 602 105, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2022 Feb 5;266:120448. doi: 10.1016/j.saa.2021.120448. Epub 2021 Sep 28.
Ce/Dy and Ce/Sm co-doped alumino-borophosphate glasses (CDABP/ CSABP) were prepared and characterized for luminescence and SHG efficiency properties. FT-IR and FT-Raman spectra have been utilized to identify different functional groups of Phosphate networks. Various optical properties such as, optical absorption, optical band gap energy (E), Urbach energy (ΔE) and linear refractive index (n) of the glasses were determined using UV-Vis spectrometer in the spectral range 200-1200 nm. Scanning Electron Microscopy/Energy Dispersive spectrometry (SEM/EDS) reveals information about the elemental compositional homogeneity as well as the surface morphology of the prepared glasses. Influences of a luminescence co-activator of Ce/Dy and Ce/Sm ions in alumina-borophosphate glasses were interpreted under the excitation wavelength of 300 nm. Two emission peaks detected at 426 nm (blue) and 574 nm (Yellow) in CDABP glass corresponding to the Dy, whereas three emission peaks traced at 558 nm (green), 598 nm (orange) and 652 nm, (red) in CSABP glass corresponding to the Sm. The Influence of internal and external quantum efficiency (QE) on the glass's photoluminescence spectrum was measured. The CIE chromaticity obtained from the luminescence spectra, confirming that the CSABP glass emits white light. The colour purity (P) and excitation purity (P) of the glasses were investigated in order to quantify the quality of light emitted by them. The second harmonic generation (SHG) efficiency of the synthesized glasses was determined without the need of a thermal polling mechanism, and the magnitude was compared to that of Urea and KDP crystal reference samples.
制备了铈/镝（Ce/Dy）和铈/钐（Ce/Sm）共掺杂的铝硼磷酸盐玻璃（CDABP/CSABP），并对其发光和二次谐波产生（SHG）效率特性进行了表征。利用傅里叶变换红外光谱（FT-IR）和傅里叶变换拉曼光谱（FT-Raman）来识别磷酸盐网络的不同官能团。使用紫外可见光谱仪在200-1200nm光谱范围内测定了玻璃的各种光学性质，如光吸收、光学带隙能量（E）、乌尔巴赫能量（ΔE）和线性折射率（n）。扫描电子显微镜/能谱仪（SEM/EDS）揭示了所制备玻璃的元素组成均匀性以及表面形态信息。在300nm激发波长下解释了铈/镝和铈/钐离子作为发光共激活剂在铝硼磷酸盐玻璃中的影响。在CDABP玻璃中，在426nm（蓝色）和574nm（黄色）处检测到两个发射峰，对应于镝；而在CSABP玻璃中，在558nm（绿色）、598nm（橙色）和652nm（红色）处追踪到三个发射峰，对应于钐。测量了内部和外部量子效率（QE）对玻璃光致发光光谱的影响。从发光光谱获得的CIE色度证实CSABP玻璃发射白光。研究了玻璃的色纯度（P）和激发纯度（P）以量化它们发射光的质量。在无需热极化机制的情况下测定了合成玻璃的二次谐波产生（SHG）效率，并将其大小与尿素和磷酸二氢钾（KDP）晶体参考样品进行了比较。
