Microstructure and properties of p-type (Bi_0.25Sb_0.75)₂Te₃ fabricated by spark plasma sintering

来源期刊：中国有色金属学报(英文版)2007年增刊第1期(Part ⅡB)

论文作者：王富强 陈晖 王忠 成艳 褚颖 朱磊 简旭宇

文章页码：1010 - 1013

Key words：(Bi_0.25Sb_0.75)₂Te₃; thermoelectric material; spark plasma sintering(SPS); sintering temperature

Abstract: P-type thermoelectric material (Bi_0.25Sb_0.75)₂Te₃ was sintered by spark plasma sintering(SPS) process in the temperature range of 320-420 ℃. The microstructures of sintered materials were found to be well aligned, particularly when sintered at lower sintering temperatures. The electrical conductivity of the material became larger as the sintering temperature increased. The Seebeck coefficient showed a general decreasing tendency with an increase in sintering temperature. In terms of the power factor, the optimum sintering temperature was found to be 380 ℃ for a maximum value of around 2.6 mW/K.