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    • 139. 发明授权
    • Method of making tl2 te3
    • 制作tl2 te3的方法
    • US3096287A
    • 1963-07-02
    • US4099960
    • 1960-07-06
    • PHILIPS CORP
    • THEODOR RABENAU ALBRECHT KARL
    • C01B19/00C01G1/12C22C1/04C22C28/00C30B1/00C30B1/02C30B11/00F25B21/02H01L35/16
    • H01L35/16C01B19/007C01G1/12C01P2002/72C01P2006/32C01P2006/40C22C1/0491C22C28/00C30B1/00C30B1/02C30B11/00C30B29/46F25B21/02
    • In the production of thallium telluride, Tl2Te3, or an isomorphous mixed crystal wherein part of the thallium and/or of the tellurium is replaced by another element, by heating the component elements or compounds supplying them, at a temperature below the decomposition temperature of Tl2Te3 (about 238 DEG C.), as described and claimed in the parent Specification, crystal nuclei of a compound isomorphous with Tl2Te3 are incorporated in the reactant mixture before or during the heat treatment. Such nuclei, preferably Tl2Te3 itself, may be added in amounts up to 1% and are preferably formed in situ. This may be effected by preheating the mixture between 238 DEG and 243 DEG C., for about 30 minutes and then cooling below the decomposition temperature. According to Examples: (1) Tl and Te in proportions corresponding to Tl2Te3 were melted at 350 DEG C. then cooled to 239 DEG C. and maintained at this temperature for an hour. Crystal nuclei of Tl2Te3 where thus formed and the mixture was cooled to 235 DEG C. and kept there for 3 hours. (2) Tl and Te were melted in an argon atmosphere at 300 DEG -350 DEG C. and cooled to 237 DEG C. Crystal nuclei were added as the temperature fell from 250 DEG to 237 DEG C. (3) TlTe and Te, corresponding to Tl2Te3 were ground with Tl2Te3 crystal nuclei and shaped under 1 ton/cm.2 pressure. The body formed was heated at 230 DEG C. for 15 hours to form Tl2Te3. The thallium and/or the tellurium may be partially replaced by gallium or indium and by sulphur or selenium respectively.
    • 在碲化铊,Tl2Te3或其中部分铊和/或碲被另一元素代替的同晶混合晶体的制备中,通过在低于Tl2Te3的分解温度的温度下加热提供它们的组分元素或化合物 (约238℃),如在母体规范中所述和要求保护的,在热处理之前或期间将与Tl2Te3同晶化合物的晶核并入反应物混合物中。 这样的核,优选Tl2Te3本身可以以高达1%的量加入,并且优选地原位形成。 这可以通过将混合物在238℃和243℃之间预热约30分钟,然后在分解温度以下冷却来实现。 根据实施例:(1)对应于Tl2Te3的比例的Tl和Te在350℃下熔化,然后冷却至239℃,并在该温度下保持1小时。 由此形成Tl2Te3的晶核,将混合物冷却至235℃并保持3小时。 (2)将Tl和Te在氩气氛中在300-350℃下熔融并冷却至237℃。当温度从250℃降至237℃时,加入晶体核。(3)TlTe和Te, 对应于Tl2Te3用Tl2Te3晶核研磨并成形为1吨/ cm 2的压力。 将形成的体在230℃下加热15小时以形成Tl2Te3。 铊和/或碲可以分别被镓或铟和硫或硒部分地替代。