材料研究学报  2007, Vol. 21 Issue (2): 126-130

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高压合成纳米晶Bi0.85Sb0.15的低温热电性

宋春梅　 刘华军　 黄荣进　 蔡方硕　 李来风

宋春梅; 刘华军; 黄荣进; 蔡方硕; 李来风 . 高压合成纳米晶Bi0.85Sb0.15的低温热电性[J]. 材料研究学报, 2007, 21(2): 126-130.

摘要 参考文献 相关文章 Metrics 全文: PDF(710 KB)   摘要: 通过机械合金化法获得Bi0.85Sb0.15纳米晶粉末材料,在常温下冷压成型并分别在不同温度下进行高压处理,制备出块状样品.X-ray衍射实验证实已形成了Bi0.85Sb0.15单相合金.测量了样品在80～300 K温区的Seebeck系数和电导率,计算出材料的功率因子与温度的关系.在523 K 6 GPa下压制30 min的样品,其Seebeck系数在150 K达到-173μV/K,比同温度下单晶材料样品的Seebeck高大约60%,功率因子在200 K达到3.27×10-3 W/m·K2,表明高压处理可以有效改善材料热电性能.高分辨电镜分析发现材料中存在均匀分布的小于5 nm的"纳米点","纳米点"的存在导致材料Seebeck系数在低温显著提高. Key words： 收稿日期: 1900-01-01      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 宋春梅 刘华军 黄荣进 蔡方硕 李来风 44.8K 链接本文: https://www.cjmr.org/CN/Y2007/V21/I2/126 1 T.M.Tritt, Thermoelectrics run hot and cold, Science, 272(5266), 1276(1996) 2 H.J.Goldsmid, G.S.Nolas, A Review of the new thermoelectric materials, Proc.of 20th Inter. Conf. on Thermoelectrics, edited by J.G.Chen, IEEE Inc, Beijing, 1(2001) 3 D.M.Rowe, CRC Handbook of Thtrmoelectrics, (New York, CRC Press, 1995) p. 157 4 B.C.Sales, D.Mandrus, R.K.Williams, Filled skutterudite antimonides: a new class of thermoelectric materials, Science, 272(5266), 1325(1996) 5 T.M.Tritt, thermoelectric material: holey and unholey semiconductors, Science, 283(5403), 804(1999) 6 D.Y.Chung, T.Hogan, P.Brazis, R.L.Melissa, C.Kannewurf, M.Bastea, C.Uher, M.G.Kana-tzidis, CsBi4Te6:A high-performance thermoelectric material for low-temperature applications, Science, 287(5455), 1024(2000) 7 G.A.Slack, V.G.Tsoukala, Some properties of semiconducting IrSb3, J. Appl. Phys., 76(3), 1665(1994) 8 J.L.Cohn, G.S.Nolas, V.Fessatidis, T.H.Metcalf, G.A.Slack, Glass like heat conduction in high-mobility crystalline semiconductors, Phys. Rew. Lett., 82(4), 779(1999) 9 R.Venkatasubramanian,E.Siivola,T.Colpitts, B.O'Quinn, Thin-film thermoelectric devices with high room-temperature figures of merit, Nature, 413(6856), 597(2001) 10 V.S.Zemskov, A.D.Belaya, U.S.Beluy, G.N.Kozhemyakin, Growth and investigation of thermoelectric properties of Bi-Sb alloy single crystals, Journal of Crystal Growth, 212(1-2), 161(2000) 11 W.M.Yim, A.Amith, Bi-Sb alloys for magentothermoelectric and thermomagnetic cooling, Solid State Electronics, 15(10), 1141(1972) 12 N.V.C.Shekar, D.A.Polvani, J.F.Meng, J.V.Badding, Improved thermoelectric properties due to electronic topological transition under high pressure, Physica B: Condensed Matter., 358(1-4), 14(2005) 13 D.A.Polvani, J.F.Meng, N.V.Chandra Shekar, J.Sharp, J.V.Badding, Large improvement in thermoelectric properties in pressure-tuned p-type Sb1.5Bi0.5Te3, Chem. Mater.,13(6), 2068(2001) 14 B.Lenoir, M.Cassart, J.P.Michenaud, H.Scherrer, Transport properties of Bi-rich Bi-Sb alloys, J. Phys. Chem. Solid., 57(1), 89(1996) 15 Y.Nishio, T.Hirano, Methods of improving the efficiency of thermoelectric energy conversion and characteristic energy range of carriers, Jpn. Appl. Phys., 36(8), 170(1997) 16 ZHU Pinwen, JIA Xiaopeng, CHEN Haiyong, CHEN Lixue, LI Dongmei, GUO Weili, MA Honggan, REN Guozhong, ZOU Guangtian, PbTe syntheses by highpressure and high-temperature approach, High Pressure Phys., 16, 183(2002) (朱品文,贾晓鹏,陈海勇,陈立学,李冬妹,郭伟力,马红安,任国仲,邹广田,PbTe的高温高压合成,高压物理学报,16, 183(2002)) 17 K.Park, J.H.Seo, D.C.Cho, B.H.Choi, C.H.Lee, Thermoelectric properties of p-type Te doped Bi0.5Sb1.5Te3 fabricated by powder extrusion, Mater. Sci. Eng. B, 88(14), 103(2002) 18 J.Seo, K.Park, D.Lee, C.Lee, Thermoelectric properties of hot-pressed n-type Bi2Te2.85Se0.15 compounds doped with SbI3, Mater. Sci. Eng. B, 49, 247(1997) 19 Z.M.Sun, H.Hashimoto, N.Keawprak,A.B.Ma , L.F.Li, M.W.Barsoum, Effect of rotary-die equal channel angular pressing on the thermoelectric properties of a (Bi,Sb)2Te3 alloy, Journal of Materials Research, 20(4), 859(2005) 20 K.Uemura, I.Nishida, Thermoelectric Semiconductors and Their Applications, (Tokyo Nikkan-Kogyo Shinbun Press, 1988), p.145 21 HU Shuhong, ZHAO Xinbing, ZHU Tiejun,Mn15Bi34Te51 and La15Bi34Te51 thermoelectric materials by mechanical alloying, Rare Metal Mater, and Eng., 31, 287 (2002) (胡淑红,赵新兵,朱铁军,机械合金化法制备的Mn15Bi34Te51和La15Bi34Te51热电材料,稀有金属材料工程,31, 287(2002)) 22 K.F.Hsu, S.Loo, F.Guo, W.Chen, J.S.Dyck, C.Uher, T.Hogan, E.K.Polychroniadis, M.G.Kanatzidis, Cubic AgPbmSbTe2+m: bulk thermoelectric materials with high figure of merit, Science, 303(5659), 818(2004) 23 H.Wang. J.F.Li, C.W.Nan, M.Zhou, High-performance Ago(?)Pb18+xSbTe20 thermoelectric bulk materials fabricated by mechanical alloying and spark plasma sintering, Appl. Phys. Lett., 88(9), 405(2006) 24 J.P.Heremans, C.M.Thrush, D.T.Morelli, Thermopower enhancement in PbTe with Pb precipitates, Journal of Applied Physics, 98(6), 063703(2005) No related articles found! Viewed Full text Abstract Cited   Shared      Discussed