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Structure and Photoelectric Properties of Dy Doped CdS Polycrystalline Thin Films

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Abstract:

Using chemical bath deposition (CBD) deposited CdS thin films for two times and prepared CdS films contained different thickness Dy-doping layer by connecting using the vacuum electron beam evaporation method, then studied the structure, surface morphology, optical and electrical properties of the films. The results show that no-doped CdS films are the cubic structure and preferentially oriented in the (111) directions. Its conductive type is N type. After Dy doping the CdS thin films are mixed structure by cubic and hexagonal phase, the conductive type is still N type, the uniformity and compactness of the films are improved. At the same time, the proportion of Cd and S atoms in Dy-doping films are more close to the stoichiometric ratio. Dy-doping can also reduce the resistivity of the films, result in an increase of carrier concentration and improve the transmittance in the visible region.

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Periodical:

Advanced Materials Research (Volumes 750-752)

Pages:

1901-1905

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.750-752.1901

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Online since:

August 2013

Authors:

Kai Zou, Rong Ping Li, Yong Sheng Liu, Lei Tian, Song Feng

Keywords:

CdS Thin Films, Chemical Bath Deposition (CBD), Dy-Doped, Electrical Performance, Optical Performance

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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