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    • 3. 发明公开
    • 열전 반도체 재료, 해당 열전 반도체 재료에 의한 열전 반도체 소자, 해당 열전 반도체 소자를 사용한 열전 모듈 및 이들의 제조방법
    • 热电半导体材料,热电子半导体元件,包括热电半导体元件的热电模块及其生产工艺
    • KR1020050121272A
    • 2005-12-26
    • KR1020057020727
    • 2004-05-07
    • 가부시키가이샤 아이에이치아이
    • 오타도시노리요시자와히로키후지타고이치이마이이사오도소츠요시니시이케우지히로
    • H01L35/34
    • H01L35/34B22D11/0611H01L35/16
    • Thermoelectric semiconductor material (10) of plate form having Te-rich phases finely dispersed in a complex compound semiconductor phase wherein the directions of extension of C- face of most crystal grains are uniformalized is produced by a process comprising preparing a metal mixture composed of (Bi-Sb)2Te 3 composition having excess Te added thereto, melting the metal mixture and solidifying the melt on the surface of cooling roll of 5 m/sec or less peripheral speed so that the plate thickness is 30 mum or more. Further, thermoelectric semiconductor material (17) having crystal orientation characteristics such that not only the directions of extension of C-face of hexagonal structure of crystal grains but also the C-axis directions thereof are nearly uniformalized is produced by laminating thermoelectric semiconductor materials (10) in the direction of plate thickness, effecting solidification molding thereof into molded item (12) and carrying out plastic deformation of the molded item (12) so that shear force is applied in a monoaxial direction approximately parallel to the main lamination direction of thermoelectric semiconductor materials (10). As a result, an enhancement of thermoelectric performance index can be attained through enhancement of crystalline orientation properties.
    • 通过包括制备金属混合物的方法制备具有精细分散在复合化合物半导体相中的富Te相的热电半导体材料(10),其中大多数晶粒的C-面的延伸方向均匀化, Bi-Sb)2Te 3组合物,其中添加了多余的Te,使金属混合物熔融并使冷却辊表面上的熔体固化为5m / sec以下的圆周速度,使得板厚为30μm以上。 此外,具有不仅晶体的六方结构的C面的延伸方向,而且其C轴方向的晶体取向特性几乎均匀化的热电半导体材料(17)通过层叠热电半导体材料(10 )在板厚方向上进行成型(12)的凝固成型,进行成型品(12)的塑性变形,使得剪切力沿大致平行于热电半导体的主层叠方向的单轴方向施加 材料(10)。 结果,通过提高结晶取向性能可以获得热电性能指标的提高。