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題名 Thermoelectric Figure of Merit Enhancement in Bi2 Te3 -Coated Bi Composites
作者 Lan, T. W.;Chen, Y. C.;Ho, J. C.;Shyu, S. G.;Chen, Y. Y.
陳洋元
貢獻者 應物系
關鍵詞 Thermoelectric figure of merit, thermal conductivity, , bismuth, hydrothermal tellurium coating
日期 2012
上傳時間 29-Jul-2015 16:41:55 (UTC+8)
摘要 This study examines the thermoelectric behavior of composites containing hydrothermally processed tellurium-coated bismuth particles of various sizes. Since only a very thin layer of Bi2Te3 forms on the particle surface, the high-pressure compacted composite is still dominated by bismuth as the main ingredient (∼96% Bi). Thermoelectric figure of merit ZT values are derived from measurements of thermal conductivity, electrical resistivity, and Seebeck coefficient. As expected, a ZT value almost three times higher than that of bismuth is found. This enhancement appears to be caused mainly by lowered thermal conductivity due to the significant number of grain boundaries, short phonon mean free path in the coating layers, and lattice mismatch.
關聯 Journal of Electronic Materials, 41(9), 2326-2330
資料類型 article
DOI http://dx.doi.org/10.1007/s11664-012-2154-y
dc.contributor 應物系
dc.creator (作者) Lan, T. W.;Chen, Y. C.;Ho, J. C.;Shyu, S. G.;Chen, Y. Y.
dc.creator (作者) 陳洋元zh_TW
dc.date (日期) 2012
dc.date.accessioned 29-Jul-2015 16:41:55 (UTC+8)-
dc.date.available 29-Jul-2015 16:41:55 (UTC+8)-
dc.date.issued (上傳時間) 29-Jul-2015 16:41:55 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/77098-
dc.description.abstract (摘要) This study examines the thermoelectric behavior of composites containing hydrothermally processed tellurium-coated bismuth particles of various sizes. Since only a very thin layer of Bi2Te3 forms on the particle surface, the high-pressure compacted composite is still dominated by bismuth as the main ingredient (∼96% Bi). Thermoelectric figure of merit ZT values are derived from measurements of thermal conductivity, electrical resistivity, and Seebeck coefficient. As expected, a ZT value almost three times higher than that of bismuth is found. This enhancement appears to be caused mainly by lowered thermal conductivity due to the significant number of grain boundaries, short phonon mean free path in the coating layers, and lattice mismatch.
dc.format.extent 529166 bytes-
dc.format.mimetype application/pdf-
dc.relation (關聯) Journal of Electronic Materials, 41(9), 2326-2330
dc.subject (關鍵詞) Thermoelectric figure of merit, thermal conductivity, , bismuth, hydrothermal tellurium coating
dc.title (題名) Thermoelectric Figure of Merit Enhancement in Bi2 Te3 -Coated Bi Composites
dc.type (資料類型) articleen
dc.identifier.doi (DOI) 10.1007/s11664-012-2154-y
dc.doi.uri (DOI) http://dx.doi.org/10.1007/s11664-012-2154-y