Fabrication and characterization of single-pair thermoelectric generators of bismuth telluride using silver-sintering technology
Fabrication and characterization of single-pair thermoelectric generators of bismuth telluride using silver-sintering technology
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采用银烧结技术的单对碲化铋热电发电机的制备和表征
DOI：
10.1016/j.matpr.2017.12.288
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发表时间：
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通讯作者：
Peiner
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文献类型：
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作者：
Bentaleb;Peiner
研究了一种形成温差发电机互连的方法--银烧结法。利用银烧结法，我们能够组装商用碲化铋颗粒和铜柱，以制造可在高温下工作的TIG。在碲化铋颗粒上化学沉积镍30、60和90分钟，作为银和Bi2Te3之间的反扩散屏障。研究了不同的制备条件(即烧结温度210~265℃，压力5~7 Mpa)对单对TIG性能的影响。获得的最低比接触电阻为(5.0 7±3.0 0)×10-5Ω·cm2，符合碲化铋焊点的最新技术水平。采用6 Mpa和265°C烧结的TEG，在190°C的TEG温度梯度下进行360小时的长期运行试验。Seebeck功率保持不变，约为0.3 mV/K，这与抗扩散层厚度略有关系。
Silver sintering technology was investigated as a method for interconnect formation of thermoelectric generators (TEGs). Using silver sintering we were able to assemble commercial bismuth telluride pellets and copper legs to fabricate TEGs, which are designed to work at elevated temperatures. Nickel was deposited electroless for 30, 60, and 90 minutes on the bismuth telluride pellets to serve as an anti-diffusion barrier between Ag and Bi2Te3. The impact of different fabrication conditions (i.e. sintering temperatures from 210 to 265°C and pressures from 5 to 7 MPa, respectively) on the properties of single-pair TEGs was investigated. Lowest specific contact resistances of (5.07 ± 3.00) × 10-5Ω·cm2were obtained which agree well with state of the art for soldered contacts of bismuth telluride. With TEGs sintered at 6 MPa and 265°C long-term operation tests were performed at temperature gradients across the TEG of 190°C for 360 hours. The Seebeck power remained unchanged showing values around 0.3 mV/K, which slightly depended on the anti-diffusion-layer thickness.