Taha Eman O, Saeed Aly
Department of Petroleum Applications, Egyptian Petroleum Research Institute (EPRI), Cairo, Egypt.
Mathematical and Natural Science Department, Faculty of Engineering, Egyptian Russian University, Cairo, Egypt.
Sci Rep. 2023 Jul 28;13(1):12260. doi: 10.1038/s41598-023-39256-6.
A host glass network of 70BO-10PbO-18ZnO-2ErO (ErCoCu1) was proposed and the impact of 1 mol% of Co or/and Cu ions on its structural, thermal, optical, and green emission properties was studied extensively. The X-ray diffraction spectra confirmed the amorphous structure of the produced glasses. Density and density-based parameters behavior showed that the Co or/and Cu ions fill the interstitial positions of the proposed ErCoCu1 network, causing its compactness. Both ATR-FTIR and Raman Spectra affirmed the formation of the fundamental structural units of the borate network, B-O-B linkage, BO, and BO. Additionally, the penetration of Co or/and Cu ions inside the ErCoCu1 converts the tetrahedral BO units to triangle BO causing its richness by non-bridging oxygens. The addition of Co or/and Cu reduces the glass transition temperature as a result of the conversion of the BO to BO units. Optical absorption spectra for the host glass ErCoCu1 showed many of the distinguished absorption bands of the Er ion. Penetration of Co ion generates two broadbands referring to the presence of Co ions in both tetrahedral and octahedral coordination and Co ions in the tetrahedral coordination. In the Cu-doped glasses, the characteristic absorption bands of Cu and Cu were observed. A green emission was generated from the ErCoCu1 glass under 380 nm excitation wavelength. Moreover, no significant effect of Co or/and Cu on the emission spectra was recorded. The considered glasses had appropriate properties qualifying them for optoelectronics and nonlinear optics applications.
提出了一种70BO-10PbO-18ZnO-2ErO（ErCoCu1）的主体玻璃网络，并广泛研究了1mol%的Co或/和Cu离子对其结构、热学、光学和绿色发光性能的影响。X射线衍射光谱证实了所制备玻璃的非晶结构。密度及基于密度的参数行为表明，Co或/和Cu离子填充了所提出的ErCoCu1网络的间隙位置，使其致密。衰减全反射傅里叶变换红外光谱（ATR-FTIR）和拉曼光谱均证实了硼酸盐网络基本结构单元B-O-B键、BO和BO的形成。此外，Co或/和Cu离子渗透到ErCoCu1内部，将四面体BO单元转变为三角形BO，导致其非桥氧丰富。由于BO向BO单元的转变，Co或/和Cu的添加降低了玻璃化转变温度。主体玻璃ErCoCu1的光吸收光谱显示了Er离子的许多特征吸收带。Co离子的渗透产生了两个宽带，分别对应于四面体和八面体配位的Co离子以及四面体配位的Co离子的存在。在Cu掺杂玻璃中，观察到了Cu和Cu的特征吸收带。在380nm激发波长下，ErCoCu1玻璃产生了绿色发射。此外，未记录到Co或/和Cu对发射光谱有显著影响。所研究的玻璃具有适合光电子学和非线性光学应用的性能。
