Pii: S0040-6090(99)00023-1
نویسندگان
چکیده
A new sol±gel route was applied to prepare alumina ®lms by using AlCl3 ́6H2O as starting material and acetylacetone (AcAc) as additive. Our research results show that AcAc and aluminum form a complex compound in the sol, which makes the sol very stable. Meanwhile, the complex structure prevents the decomposition going on quickly during the sintering process and the obtained ®lms are free of cracks. The asprepared ®lms were amorphous. When the sintering temperature reached up to 6008C, g-Al2O3 began to form and was transformed to a Al2O3 at temperatures over 1200 8C. q 1999 Elsevier Science S.A. All rights reserved.
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Pii: S0040-6090(98)01326-1
We have obtained further insights into the CBD growth mechanisms of ZnS thin ®lms using an aqueous medium containing an ammonium salt. At room temperature the optimum concentration of this salt has enabled us to increase the thickness of the ®lm by more than 400%. The optical transmission below the band edge of our best ®lm is also found to be excellent. q 1999 Elsevier Science S.A. All rights ...
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متن کاملPii: S0040-6090(99)00516-7
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