Physical properties of ZnSe1-xTex,thin films prepared with a single three-chamber evaporation coaxial source

González, Adolfo; Torres, J.

doi:10.1016/j.tsf.2018.05.017

Cited by 3 publications

(1 citation statement)

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“…21−25 Shaaban et al 26 ZnSe 1−x Te x solid solutions is reduced from 2.59 to 2.16 eV with the increase of Te content. Accordingly, the ZnSe 1−x Te x thin films were used as the photovoltaic active materials for light harvesting, which were experimentally prepared by using various techniques like molecular beam epitaxy, 27 electron beam evaporation, 28 high vacuum evaporation, 29 spray pyrolysis, 30 and metal organic chemical vapor deposition. 31 However, so far there is no report on the applications of ZnSe 1−x Te x solid solutions in photocatalysis like solar fuel production, neither experimentally nor theoretically.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Density Functional Theory Study on Structural and Optoelectronic Properties of ZnSe_1–xTe_x for the Photocatalytic Applications

Hussain

Guo

2021

J. Phys. Chem. C

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In this work, hybrid density functional theory has been used to investigate the structural and optoelectronic properties of wurtzite ZnSe1–x Te x solid solutions. The calculated bandgap values are 2.82, 2.60, 2.48, 2.38, and 2.15 eV for the ZnSe, ZnSe0.75Te0.25, ZnSe0.50Te0.50, ZnSe0.25Te0.75, and ZnTe, respectively, which are in agreement with the experimental results. The valence band maximum of ZnSe1–x Te x solid solutions is mainly comprised of Se-4p, Te-5p, Zn-3p, and Zn-3d states. Moreover, a red shift (toward longer wavelength) is observed in the absorption edges of the ZnSe1–x Te x solid solutions, which enables them to effectively utilize visible light for the photocatalytic applications. The Te doping into ZnSe can increase the n-type conductivity of the obtained solid solutions. Effective mass of photogenerated charge carriers at all Te concentrations is less than 1.5m 0, implying the high mobility of charge carriers in the ZnSe1–x Te x solid solutions. The charge separation can be improved at the 25% and 50% doping of Te. Moreover, the positions of valence and conduction band edges of ZnSe1–x Te x ternary alloys straddle the potentials of both CO2 reduction and water oxidation, implying that these solid solutions are promising for the photocatalytic reduction of CO2 and oxidation of water. In addition, the water and CO2 molecules are strongly adsorbed on the surface of solid solutions.

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Section: Introductionmentioning

confidence: 99%

Hybrid Density Functional Theory Study on Structural and Optoelectronic Properties of ZnSe_1–xTe_x for the Photocatalytic Applications

Hussain

Guo

2021

J. Phys. Chem. C

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Study of Cadmium Zinc Telluride Thin Film Characterization Fabricated From Two-Source Evaporation Method

Padmanabhan¹,

Hashmi²

2023

Encyclopedia of Materials: Electronics

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Synthesis and characterization of ZnSe_1-xTe_x thin films

Yadav¹,

Singh²,

Yadav³

et al. 2021

Phase Transitions

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Physical properties of ZnSe1-xTex,thin films prepared with a single three-chamber evaporation coaxial source

Cited by 3 publications

References 18 publications

Hybrid Density Functional Theory Study on Structural and Optoelectronic Properties of ZnSe_1–xTe_x for the Photocatalytic Applications

Hybrid Density Functional Theory Study on Structural and Optoelectronic Properties of ZnSe_1–xTe_x for the Photocatalytic Applications

Study of Cadmium Zinc Telluride Thin Film Characterization Fabricated From Two-Source Evaporation Method

Synthesis and characterization of ZnSe_1-xTe_x thin films

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Physical properties of ZnSe1-xTex,thin films prepared with a single three-chamber evaporation coaxial source

Cited by 3 publications

References 18 publications

Hybrid Density Functional Theory Study on Structural and Optoelectronic Properties of ZnSe1–xTex for the Photocatalytic Applications

Hybrid Density Functional Theory Study on Structural and Optoelectronic Properties of ZnSe1–xTex for the Photocatalytic Applications

Study of Cadmium Zinc Telluride Thin Film Characterization Fabricated From Two-Source Evaporation Method

Synthesis and characterization of ZnSe1-xTex thin films

Contact Info

Product

Resources

About

Hybrid Density Functional Theory Study on Structural and Optoelectronic Properties of ZnSe_1–xTe_x for the Photocatalytic Applications

Hybrid Density Functional Theory Study on Structural and Optoelectronic Properties of ZnSe_1–xTe_x for the Photocatalytic Applications

Synthesis and characterization of ZnSe_1-xTe_x thin films