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Thermoelectric Properties of P-Type Ga2Te5 Based Compounds
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Thermoelectric Properties of P-Type Ga2Te5 Based Compounds
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National Natural Science Foundation of China (50871056); National High-Tech. Research and Development Program of China (“863” Program) (2009AA03Z322)

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    摘要:

    采用放電等離子燒結(jié)技術(shù)（SPS）制備P型復(fù)相Ga2Te5 基化合物，對其進(jìn)行微觀分析和熱電性能測試。通過XRD分析觀察到主相Ga2Te5和少量的SnTe、單質(zhì)Te。在整個測試溫度 (319~549 K) 范圍內(nèi)，Ga2Te5 基化合物的Seebeck系數(shù)、電導(dǎo)率和熱導(dǎo)率都隨溫度的升高而降低。由于具有相對較低的熱導(dǎo)率和較高的電導(dǎo)率，Ga2SnTe5在549 K時取得了最高ZT值0.16。

    Abstract:

    P-type Ga2Te5 based compounds with multiphase equilibrium were prepared by spark plasma sintering and their microstructures and thermoelectric properties were evaluated in the temperature range from 319 K to 549 K. Through XRD analysis, we observed the main phase Ga2Te5, a small amount of SnTe and single element Te were observed. Results indicate that the Seebeck coefficients increase and the electrical and thermal conductivities decrease with the increase of the temperature in the entire temperature range. The highest thermoelectric figure of merit ZT of 0.16 can be achieved for Ga2SnTe5 at 549 K due to relatively low thermal conductivity and high thermal conductivity.

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付 紅,應(yīng)鵬展,崔教林,張曉軍,顏艷明. Thermoelectric Properties of P-Type Ga2Te5 Based Compounds[J].稀有金屬材料與工程,2012,41(5):767~771.[Fu Hong, Ying Pengzhan, Cui Jiaolin, Zhang Xiaojun, Yan Yanming. Thermoelectric Properties of P-Type Ga2Te5 Based Compounds[J]. Rare Metal Materials and Engineering,2012,41(5):767~771.]
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  • 收稿日期:2011-05-05
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