ISSN:
1432-0630
Keywords:
78.20.-e
;
81.15.-z
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract Solid solutions of ZnSe x Te1−x (0. 1 ≤x ≤ 1) were synthesized by vacuum fusion of stoichiometric proportions of ZnSe and ZnTe. X-ray diffraction data revealed that they have polycrystalline cubic zinc-blende structure. The calculated unit cell lattice constant (a) for the different compositions in powder form vary linearly, with molecular fractionx following Vegard's law:a(x) = 6.165 – 0.485x. Thin films of ZnSe x Te1−x (0.1 ≤x ≤ 1) solid solutions deposited onto glass or quartz substrates by thermal evaporation in a vacuum of 10−4 Pa were found to be polycrystalline with a preferred (1 1 1) orientation. The obtained data were confirmed by electron diffraction. The optical studies showed that ZnSe x Te1−x polycrystalline films of different compositions have two direct transitions with corresponding energy gapsE g andE g +Δ so The variations in bothE g andE g +Δ so, withx indicate that ZnSe x Te1−x solid solution belongs to an amalgamation-type following quadratic equations with bowing parameters 1.251 and 1.275, respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01579749
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