| Autor: |
Angel Roberto, Torres-Duarte, Horacio AntolĂ N, Pineda-Leon, De Leon, Aned, RamĂłn, Ochoa-LandĂ N, Santos JesĂşs, Castillo |
| Rok vydání: |
2021 |
| Zdroj: |
Acta chimica Slovenica. 67(4) |
| ISSN: |
1580-3155 |
| Popis: |
This work focused on comparing cadmium sulphide (CdS) thin films with and without CdS silver aggregates (CdS:Ag) deposited on the surface. We report absorption and transmission responses. Using the Tauc method, we obtained direct band gap energies with values of 2.50 (CdS) and 2.49 eV (CdS:Ag). We performed a scanning electron microscope characterization at different magnifications were cluster formations with granular shapes were observed. The highest magnification of 50,000× showed silver clusters as shiny granulates, which were confirmed by microprobe elemental mapping at a magnification of 18,000×. Energy Dispersive Spectroscopy revealed that the light composition of the silver clusters was the unique difference from the CdS thin film. X-Ray Diffraction results only detected the hexagonal CdS pattern, but not that of silver. The crystallite size was of around 13 nm. A Surface-Enhanced Ramman Scattering effect was observed upon the silver coating of the CdS thin film at 293.3 cm-1. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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