Abstract The gadolinium calcium silico-borate glasses doped with cerium fluoride were synthesized by melt quenching technique. The density (ρ) has been measured using Archimedes principle and also molar volume (Vm) has been estimated. The FTIR spectra of these glasses showed mainly of [BO3] and [BO4] structural units. The optical bandgap energy (Eopt) were observed to decrease with the increase in CeF3 content. Polaron radius, inter-ionic radius and oxygen packing density decreases with increase in CeF3 content. Field strength increases with increase in CeF3 content. UV emission at ~372 nm was observed which showed complete energy transfer from Gd3+ ions of 315 nm to Ce3+ ions of 372 nm when monitored at 275 nm excitation. A red shift in their emission intensities were observed with addition of CeF3 content. Ce3+ (I) to the six-coordinated site and Ce3+ (II) to the seven-coordinated site were observed in these glasses. X-ray Absorption Near Edge Structure of Ce LIII-edge were investigated and the absorption peak show at ~ 5.728 keV confirming the presence of Ce3+.

中文翻译：

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CaO-SiO2-B2O3玻璃中Gd3+向Ce3+的XANES研究及能量传输现象研究

摘要 采用熔融淬火技术合成了掺杂氟化铈的硅硼酸钙钆玻璃。密度 (ρ) 已使用阿基米德原理测量，并且摩尔体积 (Vm) 已被估计。这些玻璃的 FTIR 光谱主要显示 [BO3] 和 [BO4] 结构单元。观察到光学带隙能量 (Eopt) 随着 CeF3 含量的增加而降低。极化子半径、离子间半径和氧堆积密度随着 CeF3 含量的增加而减小。场强随着 CeF3 含量的增加而增加。观察到~372 nm 处的 UV 发射，当在 275 nm 激发下监测时，这表明从 315 nm Gd3+ 离子到 372 nm Ce3+ 离子的能量完全转移。随着 CeF3 含量的加入，观察到它们的发射强度发生红移。在这些玻璃中观察到 Ce3+ (I) 到六配位点和 Ce3+ (II) 到七配位点。研究了 Ce LIII 边缘的 X 射线吸收近边缘结构，吸收峰显示在 ~ 5.728 keV，证实了 Ce3+ 的存在。