Department of Physics, Centro de Investigación y de Estudios Avanzados del IPN, P.O. Box 14-740, Mexico.
Facultad de Ciencias de la Electrónica, Benemérita Universidad Autónoma de Puebla, Blvd. 18 sur y Av. Sn. Claudio, San Manuel C.P., Puebla, Mexico.
Luminescence. 2020 Aug;35(5):781-787. doi: 10.1002/bio.3784. Epub 2020 Feb 6.
This study reports the structural and optical properties of CdS/ZnTiO nanocomposites prepared using a chemical bath and different titanate concentrations. Commercial ZnTiO nanoparticles were introduced into a chemical bath that had been used to produce CdS semiconductor nanoparticles (NPs). Here, the growing CdS crystallites precipitated onto the suspended zinc titanate NPs. X-ray diffraction patterns revealed that samples of CdS/ZnTiO nanopowders were made of cubic ZnTiO and hexagonal CdS wurtzite. The morphology of the particles was studied using transmission electron microscopy and scanning electron microscopy images. These images demonstrated the different characteristics of the CdS/ZnTiO nanocomposites and their dependence on titanate concentration when placed into the CdS-growing solution. Photoluminescence spectra showed three main emission bands for the electron transitions in the CdS/ZnTiO composite. This composite produced three photoluminescence bands, the intensities of which depended on composite shape, which in turn depended on the relative concentrations of CdS and ZnTiO .
本研究报告了使用化学浴和不同钛酸盐浓度制备的 CdS/ZnTiO 纳米复合材料的结构和光学性质。商业 ZnTiO 纳米粒子被引入到已经用于生产 CdS 半导体纳米粒子（NPs）的化学浴中。在这里，生长的 CdS 晶核沉淀在悬浮的锌钛酸盐 NPs 上。X 射线衍射图谱表明，CdS/ZnTiO 纳米粉末样品由立方 ZnTiO 和六方 CdS 纤锌矿组成。使用透射电子显微镜和扫描电子显微镜图像研究了颗粒的形态。这些图像展示了 CdS/ZnTiO 纳米复合材料的不同特性及其对放入 CdS 生长溶液中的钛酸盐浓度的依赖性。光致发光光谱显示，在 CdS/ZnTiO 复合材料中，电子跃迁有三个主要发射带。该复合材料产生了三个光致发光带，其强度取决于复合材料的形状，而形状又取决于 CdS 和 ZnTiO 的相对浓度。
