金属アルコキシドからの酸化物還元法によるCdTeの合成

概要

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A new synthetic route based on solution chemistry was developed for a compound semiconductor cadmium telluride (CdTe) via reduction of CdTeO_3 prepared by hydrolysis of the corresponding double metal alkoxide as a starting material. The CdTe double alkoxide solution was prepared by the reaction of cadmium acetate with Te alkoxide in the presence of Na alkoxide in ethanol. Amorphous CdTeO_3 was obtained by hydrolysis of the CdTe double alkoxide at room temperature and under the reflux conditions. Heat-treatment of the resulting amorphous CdTeO_3 powder at 400℃ and 600℃ in air resulted in transformation to cubic CdTeO_3 and monoclinic CdTeO_3, respectively. CdTe was obtained by heat-treatment of calcined amorphous and crystallized CdTeO_3 at 200-400℃ in H_2. The products consisted of the primary particles of about 16 nm in diameters and the Cd/Te ratios were chemically stoichiometric. A CdTe film was obtained from screen-printed amorphous CdTeO_3 paste on low-cost slide glass substrates by heat-treatment at 400℃ in H_2.
社団法人日本セラミックス協会の論文
2000-07-01