【摘要】 该文叙述了Bi₂Te₃二元合金半导体制冷材料的空间点阵、相图和能带结构,介绍了制冷材料目前的性能水平。探讨了制冷材料的各性能参数随温度变化的规律,指出了元件加工方式及器件工艺对材料性能的影响等关键问题,并且实测了用该制冷材料制作的半导体温差电偶的数据,验证和分析了材料性能。更多还原

【Abstract】 In this paper, the space group,the pseudobinary phase diagram and the energy gap construction, for Bi2Te3 and its pseudo-binary alloys materials are recounted.The performance level of thermoelectric material now is introducted.Approaches to key problems are made, such as the law of the function of parameter for the material as temperature, the procession manner for the thermoelements and the affection of device technique on the performance.The experimants on the thermocouple made in bismuth telluride pseudo-binary alloys have been made and these performance is analyzed.更多还原