Amaya Iveth Viridiana García, Rodríguez Carvajal David Alejandro, Alvarado-Rivera Josefina, Lozada-Morales R, Santos-Munguía Paula Cristina, Reyes Juan José Palafox, Hernández-Abril Pedro, Limón Reynosa Gloria Alicia, Zayas Ma Elena
Ingeniería en Geociencias, Unidad Hermosillo, Universidad Estatal de Sonora, Hermosillo 83100, SON, Mexico.
Departamento de Investigación en Física, Universidad de Sonora, Hermosillo 83000, SON, Mexico.
Materials (Basel). 2025 Apr 10;18(8):1739. doi: 10.3390/ma18081739.
New glasses in the xCdO-(90 - x)TeO-10GeO system were obtained by the conventional melt-quenching process at 900 °C. The glasses were transparent to the naked eye. The diffraction patterns indicate that the samples were mostly amorphous, except for the CdO-rich glasses, in which the formation of nanocrystals of CdO and CdTeO were identified. Raman spectroscopy analysis of the samples displayed the existence of TeO, TeO, TeO, and GeO, structural units within the glass matrix. The optical band gap of the glass samples was determined by optical absorption spectroscopy using the Tauc method. Depending on the relative content of TeO, their values varied in the range of 2.32-2.86 eV. The refractive index was obtained from the band gap values. The XPS measurements showed that Ge 3d, O 1s and Te 3d, Te 3d, Cd 3d, and Cd 3d doublets shifted to higher binding energy values as the amount of TeO was increased. The binding energy values of the Te 3d doublet are related to the TeO and TeO groups.
通过在900℃下的常规熔体淬火工艺，在xCdO-(90 - x)TeO-10GeO体系中制备出了新型玻璃。这些玻璃肉眼可见是透明的。衍射图谱表明，除了富CdO玻璃外，样品大多为非晶态，在富CdO玻璃中鉴定出了CdO和CdTeO纳米晶体的形成。对样品的拉曼光谱分析显示，玻璃基体中存在TeO、TeO、TeO和GeO结构单元。玻璃样品的光学带隙通过采用陶克方法的光吸收光谱法测定。根据TeO的相对含量，其值在2.32 - 2.86 eV范围内变化。折射率由带隙值得出。X射线光电子能谱测量表明，随着TeO含量的增加，Ge 3d、O 1s以及Te 3d、Te 3d、Cd 3d和Cd 3d双峰向更高的结合能值移动。Te 3d双峰的结合能值与TeO和TeO基团有关。
