Synthesis and characterization of chemically deposited CdS thin films without toxic precursors.

19th Chilean Physics Symposium 2014

Fernández-Pérez, A.^1 ; Sandoval-Paz, M.G.^2

Departamento de Fica, Facultad de Ciencias, Universidad Del Bío-Bío, Collao 1202, Casilla 5-C, Concepción, Chile^1

Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Concepción, Casilla 160-C, Concepción, Chile^2

关键词: Chemical bath deposition technique;    Deposition time;    Growth solutions;    Reaction solutions;    Simultaneous transmission;    Sodium citrate;    Structural and optical properties;    Synthesis and characterizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/720/1/012029/pdf
DOI  :  10.1088/1742-6596/720/1/012029

来源: IOP

【 摘 要 】

Al doped and undoped CdS thin films (CdS:Al) were deposited on glass, copper and bronze substrates by chemical bath deposition technique in an ammonia-free cadmium-sodium citrate system. The structural and optical properties of the CdS films were determined by X-ray diffraction (XRD), scanning electron microscope (SEM), and simultaneous transmission- reflection spectroscopy. It was found that the properties of the films depend on the amount of Al in the growth solutions and deposition time. The increase in Al content in the reaction solution led to a smaller crystallite size and higher energy band gap that varies in the range 2.42 eV - 2.59 eV depending on the Al content.