Effect of Aluminum Doping on the Nanocrystalline ZnS:Al3+ Films Fabricated on Heavily-Doped p-type Si(100) Substrates by Chemical Bath Deposition Method
Document title: Effect of Aluminum Doping on the Nanocrystalline ZnS:Al3+ Films Fabricated on Heavily-Doped p-type Si(100) Substrates by Chemical Bath Deposition Method
Journal: Brazilian journal of physics
Database: PERIÓDICA
System number: 000382324
ISSN: 0103-9733
Authors: 1
2
1
1
1
Institutions: 1Zhengzhou University, School of Physics and Engineering, Zhengzhou, Henan. China
2Henan University of Technology, College of Information Science and Engineering, Zhengzhou, Henan. China
Year:
Season: Jun
Volumen: 45
Number: 3
Pages: 308-313
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental
English abstract Intrinsic ZnS and aluminum-doped nanocrystalline ZnS (ZnS:Al3+) films with zinc-blende structure were fabricated on heavily-doped p-type Si(100) substrates by chemical bath deposition method. Influence of aluminum doping on the microstructure, and photoluminescent and electrical properties of the films, were intensively investigated. The average crystallite size of the films varying in the range of about 9.0 ∼ 35.0 nm initially increases and then decreases with aluminum doping contents, indicating that the crystallization of the films are initially enhanced and then weakened. The incorporation of Al3+ was confirmed from energy dispersive spectrometry and the induced microstrain in the films. Strong and stable visible emission band resulting from the defect-related light emission were observed for the intrinsic ZnS and ZnS:Al3+ films at room temperature. The photoluminescence related to the aluminum can annihilate due to the self-absorption of ZnS:Al3+ when the Al3+ content surpasses certain value. The variation of the resistivity of the films that initially reduces and then increases is mainly caused by the partial substitute for Zn2+ by Al3+ as well as the enhanced crystallization, and by the enhanced crystal boundary scattering, respectively
Disciplines: Física y astronomía
Keyword: Física de materia condensada,
Películas,
Sulfuro de zinc,
Propiedades ópticas,
Dopaje,
Aluminio,
Depositación por baño químico
Keyword: Physics and astronomy,
Condensed matter physics,
Films,
Zinc sulfide,
Optical properties,
Doping,
Aluminum,
Chemical bath deposition (CBD)
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