ISSN:
1432-0630
Keywords:
PACS: 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 Te 1-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 fraction x following Vegard’s law: a(x)=6.165−0.485x. Thin films of ZnSe x Te 1-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 Te 1-x polycrystalline films of different compositions have two direct transitions with corresponding energy gaps E g and E g+ΔSO The variations in both E g and E g+ΔSO with x indicate that ZnSe x Te 1-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/s003390050355
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