Journal ArticleDOI
Polycrystalline thin film ZnSexTe1-x: preparation and properties
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TLDR
ZnSexTe1-x films were prepared by co-evaporating ZnSe and ZnTe powders from a two-zone hot wall evaporation jig onto glass substrates.Abstract:
ZnSexTe1-x films were prepared by co-evaporating ZnSe and ZnTe powders from a two-zone hot wall evaporation jig onto glass substrates. The optical band gaps for different x were determined and this showed a bowing behaviour. The refractive indices and extinction coefficients have been determined as a function of wavelength. Variations of surface roughness with composition and microstructural details were also reported. Grain boundary scattering effects were found to be a dominant factor controlling electron transport processes in these films.read more
Citations
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Microstructure and optical studies of electron beam evaporated ZnSe1−xTex nanocrystalline thin films
TL;DR: In this paper, the structure and optical properties of nanocrystalline thin films of ZnSe 1− x Te x (0.0, x ǫ ≥ 1.0) were examined using X-ray diffraction technique and revealed that the deposited films have polycrystalline zinc blend structure with lattice constant, a, increasing linearly from 0.55816 to 0.59989 nm as x varies from 0 to 1.
Journal ArticleDOI
Thickness-dependent nonlinear absorption behaviors in polycrystalline ZnSe thin films
TL;DR: In this paper, the life time of localized defect states on grain boundary was found to be ~ 3 ns from ultrafast pump-probe spectroscopy for polycrystalline ZnSe thin films.
Journal ArticleDOI
Optical characterization of polycrystalline ZnSe1−xTex thin films using variable angle spectroscopic ellipsometry and spectrophotmetery techniques
TL;DR: In this article, the optical properties of polycrystalline ZnSe1−xTex (0.0≤x≤1.0) thin films were compared using variable angle spectroscopic ellipsometry (VASE) and spectrophotometry.
Journal ArticleDOI
Metalorganic chemical vapor deposition of ZnSe films on glass and GaAs(111) substrates
TL;DR: In this paper, the authors studied the low-temperature growth and doping of polycrystalline ZnSe by MOCVD using ditertiary-butylselenide (DtBSe) and dimethylzinc-triethylamine (DMZn-TEN) precursors.
Journal ArticleDOI
Structural and optical analyses of polycrystalline Zn1−xSbxSe thin films prepared by resistive heating technique
Rashad Rashid,Arshad Mahmood,U. Aziz,A. Shah,Zahid Ali,Q. Raza,Abdul Malik,Muhammad Asim Rasheed +7 more
TL;DR: In this paper, the influence of Sb doping on the structural and optical properties of Zn 1− x Sb x Se (0,⩽, x ǫ⩾ 0.15) thin films prepared by thermal evaporation technique on glass substrate was reported.
References
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Journal ArticleDOI
Some aspects of surface roughness in polycrystalline thin films: optical constants and grain distribution
TL;DR: A modified formulation and new method have been suggested to derive meaningful information on the optical constants, grain size and grain distribution of polycrystalline thin films where surface roughness plays an important part through the contributions arising out of scattered transmission and diffuse reflection.
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Preparation and optical properties of Cd1−xZnxTe films
TL;DR: Optical properties of Cd1−xZnxTe films (0.1 < × < 0.7) were strudied as a function of incident photon energy in this article.
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Alternative route for studying the grain boundary scattering in semiconductor films of high resistivity
TL;DR: In this article, the grain boundary potential, the density of trap states and the carrier concentration of the films can be obtained by measuring reflectances of the film deposited on non-absorbing substrates.
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Ternary II-VI compound thin films for tandem solar cell applications
TL;DR: In this article, the I-V and spectral response characteristics of ZnTe-ZnxCd1−xS heterojunctions and ZnSeyTe1−y graded p-n junctions are reported.