碲化铋基热电半导体晶体研究
发布时间：2019-01-10 20:25
【摘要】：碲化铋基热电半导体是中低温区高性能热电转换材料,在微电子、计算机以及航天等领域广泛用于局部致冷与精确温控,在工业余废热回收温差发电等领域具有良好的应用前景。通过合金化和掺杂的方法,可以增强声子散射降低晶格热导率,优化载流子浓度提高电性能,从而提高碲化铋基材料的热电性能。在简述碲化铋晶体结构和能带结构基础上,综述了合金化和掺杂提高碲化铋基半导体的热电性能、碲化铋基半导体晶体生长的方法及空间微重力对碲化铋基晶体区熔生长的影响,并展望了利用天宫二号空间实验室开展碲化铋基晶体生长及其相关研究。
[Abstract]:Bismuth telluride based thermoelectric semiconductor is a high performance thermoelectric conversion material in medium and low temperature region. It is widely used in local cooling and precise temperature control in the fields of microelectronics, computer and spaceflight, etc. It has a good application prospect in industrial waste heat recovery, temperature difference power generation and other fields. By alloying and doping, the phonon scattering can be enhanced to reduce the lattice thermal conductivity, the carrier concentration can be optimized and the electrical properties can be improved, thus the thermoelectric properties of bismuth telluride based materials can be improved. Based on a brief introduction of the crystal structure and energy band structure of bismuth telluride, alloying and doping to improve the thermoelectric properties of bismuth telluride based semiconductors are reviewed. The growth method of bismuth telluride based semiconductor crystal and the effect of space microgravity on the region melting growth of bismuth telluride crystal are discussed. The research on the growth of bismuth telluride based crystal and its related research using Tiangong 2 space laboratory are prospected.
【作者单位】： 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室;河海大学常州校区机电学院;
【基金】：中国载人空间站工程项目(TGJZ80701-2-RW024) 中国科学院空间科学战略性先导科技专项(XDA04020202-11-1)
【分类号】：V524
本文编号：2406750
[Abstract]:Bismuth telluride based thermoelectric semiconductor is a high performance thermoelectric conversion material in medium and low temperature region. It is widely used in local cooling and precise temperature control in the fields of microelectronics, computer and spaceflight, etc. It has a good application prospect in industrial waste heat recovery, temperature difference power generation and other fields. By alloying and doping, the phonon scattering can be enhanced to reduce the lattice thermal conductivity, the carrier concentration can be optimized and the electrical properties can be improved, thus the thermoelectric properties of bismuth telluride based materials can be improved. Based on a brief introduction of the crystal structure and energy band structure of bismuth telluride, alloying and doping to improve the thermoelectric properties of bismuth telluride based semiconductors are reviewed. The growth method of bismuth telluride based semiconductor crystal and the effect of space microgravity on the region melting growth of bismuth telluride crystal are discussed. The research on the growth of bismuth telluride based crystal and its related research using Tiangong 2 space laboratory are prospected.
【作者单位】： 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室;河海大学常州校区机电学院;
【基金】：中国载人空间站工程项目(TGJZ80701-2-RW024) 中国科学院空间科学战略性先导科技专项(XDA04020202-11-1)
【分类号】：V524
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