Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)最新文献_第4页

Component distribution during the melting of solid solution (Bi,Sb)/sub 2/Te/sub 3/ grown from the excessive tellurium melt 过量碲熔体中生长的固溶体(Bi,Sb)/sub - 2/Te/sub - 3/熔融过程中的组分分布

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843350

A. I. Anukhin

{"title":"Component distribution during the melting of solid solution (Bi,Sb)/sub 2/Te/sub 3/ grown from the excessive tellurium melt","authors":"A. I. Anukhin","doi":"10.1109/ICT.1999.843350","DOIUrl":"https://doi.org/10.1109/ICT.1999.843350","url":null,"abstract":"Based on general assumptions about the phase equilibrium diagram in the system Bi-Sb-Te near solid solutions (Bi,Sb)/sub 2/Te/sub 3/, the component distribution under various methods of melting has been studied. By the method of successive approximation we calculated the tellurium distribution along the ingots of solid solutions (Bi,Sb)/sub 2/Te/sub 3/ grown from the melt with excessive tellurium. Analytic expressions of the changes of tellurium concentration in the melt while growing (Bi,Sb)/sub 2/Te/sub 3/ by normal crystallisation, zone melting, by a method with floating crucible, and by zone levelling are obtained. With all methods of crystallisation, except for zone levelling, continuous changes of tellurium concentration in the melt are present. This predefines the non-uniform distribution of dissolved tellurium concentration in the solid phase and as a result non-uniform distribution of properties along the obtained ingots of solid solutions. The only one and simple to implement method in order to ensure approximately uniform properties distribution along the ingots could be zone levelling. Nevertheless approximate integrated equation of zone melting considering the dependence of solid phase antimony distribution coefficient on tellurium concentration in the melt shows that under zone levelling a slight non-uniformity of tellurium distribution in the solid phase is also observed.","PeriodicalId":253439,"journal":{"name":"Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)","volume":"238 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116465031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Complex ternary mixed layered tetradymite-like chalcogenides as novel thermoelectrics 作为新型热电材料的复杂三元混合层状四钇硫属化合物

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843446

L. E. Shelimova, P. Konstantinov, O. G. Karpinsky, E. S. Avilov, M. Kretova, J. Fleurial

引用次数: 4

Thermoelectric properties of rhenium disilicide 二硅化铼的热电性质

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843358

A. Heinrich, C. Kleint, H. Griessmann, G. Behr, L. Ivanenko, V. Shaposhnikov, J. Schumann

引用次数: 0

Electrical and thermal properties for p-type /spl beta/-FeSi/sub 2/ with Mn and Al double doping Mn和Al双掺杂p型/spl β /-FeSi/sub - 2/的电学和热性能

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843351

H. Kaibe, H. Ernst, L. Rauscher, K. Schackenberg, E. Muller, Y. Isoda, I. Nishida

引用次数: 3

Electrodeposition of CoSb/sub 3/ nanowires CoSb/ sub3 /纳米线的电沉积

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843428

J. Behnke, A. Prieto, A. Stacy, T. Sands

引用次数: 1

Micro thermoelectric modules and their application to wristwatches as an energy source 微型热电模块及其在手表上的能源应用

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843389

Matsuo Kishi, H. Nemoto, T. Hamao, M. Yamamoto, S. Sudou, M. Mandai, S. Yamamoto

{"title":"Micro thermoelectric modules and their application to wristwatches as an energy source","authors":"Matsuo Kishi, H. Nemoto, T. Hamao, M. Yamamoto, S. Sudou, M. Mandai, S. Yamamoto","doi":"10.1109/ICT.1999.843389","DOIUrl":"https://doi.org/10.1109/ICT.1999.843389","url":null,"abstract":"Microthermoelectric (TE) coolers are currently used in high power electronic devices such as laser diodes to stabilize temperature. With the aim of miniaturizing this technology, we have developed a fabrication technique to create micro-TE modules with a cross-section element size of about 100 /spl mu/m/spl times/100 /spl mu/m and a height of several hundred mm. We have previously reported the cooling properties of a module fabricated by this technique. With the recent advances in micro-electric technology, which has decreased the energy consumption in an electric wristwatch to about 1 /spl mu/W, there has been increased discussion about utilizing these micro-TE modules to generate energy of several /spl mu/W to power a wristwatch. In response, we have developed a micro-TE module with an overall size of 2 /spl times/ 2 /spl times/ 1.3 mm consisting of more than 50 pairs of elements, and have succeeded in making and marketing a TE powered wristwatch. This paper presents the fabrication and the properties of the micro-TE module, as well as the TE powered wristwatch.","PeriodicalId":253439,"journal":{"name":"Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131674474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 240

The simple relations to express consumer parameters for two-stage thermoelectric module connected in parallel 两级并联热电模块用户参数的简单表示关系

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843379

V. Babin, P. Takhistov

引用次数: 0

Preparation and thermoelectric properties of A/sub 8//sup II/B/sub 16//sup III/B/sub 30//sup IV/ clathrate compounds A/sub 8//sup II/B/sub 16//sup III/B/sub 30//sup IV/包合物的制备及热电性能

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843362

V. Kuznetsov, L. Kuznetsova, A. Kaliazin, D. Rowe

引用次数: 15

Modification of bismuth telluride for improving thermoelectric properties 改善热电性能的碲化铋改性

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843487

Z. Ding, Shu-Chuan Huang, D. Marcus, R. Kaner

{"title":"Modification of bismuth telluride for improving thermoelectric properties","authors":"Z. Ding, Shu-Chuan Huang, D. Marcus, R. Kaner","doi":"10.1109/ICT.1999.843487","DOIUrl":"https://doi.org/10.1109/ICT.1999.843487","url":null,"abstract":"A chemical method is used to intercalate lithium ions into the layered structure of bismuth telluride and its relatives. Exfoliation of the intercalated compounds in water results in colloidal suspensions of individual layers. These colloids can then be redeposited onto substrates yielding materials with some c-axis orientation, but no registry of ab planes. Annealing of the deposited materials at a low temperature (85/spl deg/C) for several days or at a higher temperature (300/spl deg/C) for several hours produces highly c-axis oriented materials. N-type doped bismuth tellurides are made by substituting selenium for tellurium in the bismuth telluride lattice. A complete range of solid solutions for Bi/sub 2/Te/sub 3-x/Se/sub x/ (x/spl les/3) has been synthesized from the elements and both the n and c lattice parameters vary linearly with the composition (x). P-type doped bismuth tellurides are made by substituting antimony for bismuth in the bismuth telluride lattice. A complete range of solid solutions for Bi/sub 2-x/Sb/sub 2/Te/sub 3/ (x/spl les/2) has been synthesized from the elements. While the a lattice parameter varies linearly with composition (x), the c parameter remains virtually unchanged as the c-axis size is mainly dependent on the close-packing of tellurium anions and not on the size of the interstitial bismuth or antimony ions.","PeriodicalId":253439,"journal":{"name":"Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123415946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Thermoelectric properties of epitaxial PbSrTe and PbSrSe bulk and MQW thin films 外延PbSrTe和PbSrSe块体薄膜和MQW薄膜的热电性能

Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407) Pub Date : 1999-08-29 DOI: 10.1109/ICT.1999.843480

H. Beyer, A. Lambrecht, J. Nurnus, H. Bottner, H. Griessmann, A. Heinrich, L. Schmitt, M. Blumers, F. Volklein

{"title":"Thermoelectric properties of epitaxial PbSrTe and PbSrSe bulk and MQW thin films","authors":"H. Beyer, A. Lambrecht, J. Nurnus, H. Bottner, H. Griessmann, A. Heinrich, L. Schmitt, M. Blumers, F. Volklein","doi":"10.1109/ICT.1999.843480","DOIUrl":"https://doi.org/10.1109/ICT.1999.843480","url":null,"abstract":"Experimental evidence for an enhancement of the thermoelectric figure of merit ZT in 2D PbTe/Pb/sub 1-x/Eu/sub x/Te multiple-quantum-well (MQW)-structures was recently reported by Harman et al. (1997). To verify these basic concepts MQW-structures based on the Sr-ternary lead chalcogenides Pb/sub 1-x/Sr/sub x/Se and Pb/sub 1-x/Sr/sub x/Te were investigated. PbSe/Pb/sub 1-x/Sr/sub x/Se MQW have been successfully used for lead salt laser diodes. We present properties of bulk Pb/sub 1-x/Sr/sub x/Se and Pb/sub 1-x/Sr/sub x/Te epitaxial films grown by MBE on freshly cleaved BaF/sub 2/(111). N-type films with carrier concentrations between 10/sup 18/ and 10/sup 20/ cm/sup -3/ can be easily obtained by doping with pure bismuth. XRD and AFM measurements show a high structural quality of these films. The surface roughness of PbSrTe is even less than that of PbTe. Temperature dependent measurements of electrical conductivity and thermopower are reported. The thermoelectrical data of bulk PbTe-films agree well with values given by Harman. For MQW-films XRD and AFM analysis indicate high structural perfection. Measurements of transport properties of PbTe/Pb/sub 1-x/Sr/sub x/Te- and PbSe/Pb/sub 1-x/Sr/sub x/Se-MQW structures were evaluated according to Harman and alternatively with stacked well and barrier layers connected in parallel. Both evaluation methods were performed on different types of MQW structures and doping profiles and yield an enhancement in the power factor for a well thickness less than 3 nm. Additionally first thermal conductivity data on IV-VI MQW structures are presented.","PeriodicalId":253439,"journal":{"name":"Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407)","volume":"65 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126248101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4