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- W2520675556 abstract "Bi2Te3−xSex alloys are extensively used for thermoelectric cooling around room temperature, but, previous studies have reported peak thermoelectric efficiency of the material at higher temperature around 450 K. This study presents the casting followed by high energy ball milling and spark plasma sintering as a thriving methodology to produce efficient and well-built Bi2Te3−xSex material for the thermoelectric cooling around room temperature. In addition, changes in electrical and thermal transport properties brought up by amount of Se in the Bi2Te3−xSex material for this methodology are measured and discussed. Although Seebeck coefficient and electrical conductivity showed irregular trend, power factor, thermal conductivity and figure of merit ZT gradually decreased with the increase in amount of Se. A maximum ZT value of 0.875 at 323 K was obtained for x = 0.15 sample owing to its higher power factor. This value is 17% and 38% greater than for x = 0.3 and x = 0.6 samples respectively. At 323 K, herein reported ZT value of 0.875 is higher than the state of art n-type Bi2Te3 based thermoelectric materials produced by the time consuming and expensive methodologies." @default.
- W2520675556 created "2016-09-23" @default.
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- W2520675556 date "2016-11-01" @default.
- W2520675556 modified "2023-09-28" @default.
- W2520675556 title "Enhanced thermoelectric cooling properties of Bi2Te3−xSex alloys fabricated by combining casting, milling and spark plasma sintering" @default.
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- W2520675556 doi "https://doi.org/10.1016/j.intermet.2016.08.006" @default.
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