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Updated: Jul 16, 2026
The Effect of Ultraviolet Radiation on the Chemical Bath Deposition of Bis(thiourea) Cadmium Chloride Crystals and the Subsequent CdS Obtention
Published on: August 30, 2018
[Study on the property of CBD-CdS thin films]
Xue-bai Sun1, Xi-qing Zhang, Peng Du
1Institute of Optoelectronics Technology, Laboratory of Materials for Information Storage and Display, Beijing Jiaotong University, Beijing 100044, China.
Abstract:
CdS thin films were prepared by chemical bath deposition (CBD) at 90 'C. The influence of annealing and CdCl2 treatment on CBD-CdS thin film was studied. XRD and SEM were used to study the crystal structure and surface morphology ofthe films. The untreated CBD-CdS films had poor crystallinity; the CdS thin film made with annealing treatment had cubic crystallinity but small grain size. After the CdCl2 treatment, these films recrystallized to the hexagonal phase, resulting in a better crystallinity, and smooth surface morphology. Optical properties were studied by absorption spectrum. The energy gap of the films was found to decrease by annealing, and the CBD-CdS made with CdCl2 treatment had a lower density of planar defects. In conclusion, the CdCl2 treatment can improve the properties of the CdS thin films.
