Abstract
A theoretical approach to the growth mechanism of evaporated thin films of ZnS, CaS and SrS electroluminescent materials has been developed. The effect of surface energy on the thin-film orientation of the II–VI compounds of ZnS, CaS and SrS has been investigated. The dependence of the thin-film orientation of CaS (SrS) on the substrate temperature can be well explained by re-evaporation and atomic vibration of adsorbed atoms taken into account. We conclude that the growth rate of CaS (SrS) thin films seems to be related to the number of dangling bonds per atom rather than the number of bonds, which are in binding states.
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