Effect of Different Radios of Two Complexes on the Structural and Optical Properties of ZnS Thin Films

Jin Shang; Huan Ke; Shu Wang Duo; Ting Zhi Liu; Hao Zhang

doi:10.4028/www.scientific.net/AMR.986-987.47

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 986-987Effect of Different Radios of Two Complexes on the...

Effect of Different Radios of Two Complexes on the Structural and Optical Properties of ZnS Thin Films

Abstract:

ZnS thin films were deposited at three different radios of V(NH₃·H₂O)/V(N₂H₄) on glass substrates by chemical bath deposition (CBD) method without stirring the deposition bath during the deposition process. The structural and optical properties were analyzed by X-ray diffraction (XRD) and UV-VIS spectrophotometer. The results showed that ZnS thin film deposited at the radio of V(NH₃·H₂O)/V(N₂H₄)=15:15 is higher than that of the other two different solutions. With the radio of V(NH₃·H₂O)/V(N₂H₄) decreasing from 15:5 to 15:15, homogenous precipitation of Zn (OH)₂ easily forms in the bath, but ZnS precipitation first become suppressed and then easily forms in solution. It means that the concentration of OH^- ion increases with the volume of N₂H₄ increasing, which accelerates the formation of Zn (OH)₂. However, when the volume of N₂H₄ increases to 15mL, relatively high concentration of OH^- ion not only accelerates the formation of Zn (OH)₂, but also be used to the hydrolysis of thiourea. The average transmissions of all the ZnS films from three different solutions (V(NH₃·H₂O)/V(N₂H₄)=15:5, 15:10 and 15:15) are greater than 90% for wavelength values in visible region. The direct band gaps range from 3.80 to 4.0eV. The ZnS film deposited for 2.5h with the radio of V(NH₃·H₂O)/V(N₂H₄)=15:15 has the cubic structure only after single deposition.

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Periodical:

Advanced Materials Research (Volumes 986-987)

Pages:

47-50

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.986-987.47

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Online since:

July 2014

Authors:

Jin Shang*, Huan Ke, Shu Wang Duo, Ting Zhi Liu, Hao Zhang

Keywords:

Chemical Bath Deposition, Different Radios, Optical Property, Structure, ZnS Films

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