INFLUENCE OF THE ULTRASONIC VIBRATION ON CHEMICAL BATH DEPOSITION OFZnSTHIN FILMS

Qi Liu and Guobing Mao
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Qi Liu: Mechanical Engineering Department, Anhui University of Technology and Science, Anhui Wuhu, 241000, China
Guobing Mao: Mechanical Engineering Department, Anhui University of Technology and Science, Anhui Wuhu, 241000, China

Surface Review and Letters (SRL), 2009, vol. 16, issue 06, 895-899

Abstract: Chemical bath deposition (CBD) and ultrasonic chemical bath deposition (US-CBD) ofZnSthin films fromNH4OH/SC(NH2)2/ZnSO4solutions have been studied. The influence of the ultrasonic vibration on properties ofZnSthin films has been investigated. The growth rate, structure, and properties ofZnSthin film deposited by different CBD techniques were studied using X-ray diffractometer (XRD), scanning electron microscopy (SEM), and atomic force microscope (AFM). The results show that the growth rate of US-CBD is slower than that of CBD. The XRD analysis of as-deposited ZnS films shows that the films are both cubicZnSstructure and the crystallinity of US-CBDZnSfilm is higher than that of CBDZnSfilm. SEM studies indicate that adhesion particles on the US-CBDZnSsurface are fewer than that on the CBDZnSsurface. Moreover, the film prepared by US-CBD is homogeneous and with high compactness. The rms roughness(Rrms)value of CBDZnSfilm is higher than that of US-CBD. Transmission measurement shows that the optical transmittance of US-CBDZnSis higher than that of CBDZnS, and the optical transmittance is above 90% when the wavelength is over 470 nm. The band gap(Eg)values of the films deposited by CBD and US-CBD are 3.50 and 3.67 eV, respectively.

Keywords: Chemical bath deposition (CBD); ultrasonic chemical bath deposition (US-CBD); ultrasonic vibration; ZnSthin films (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0218625X0901344X

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