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Article: Studies on surface preparation and smoothness of nanostructured Bi 2Te 3-based alloys by electrochemical and mechanical methods
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TitleStudies on surface preparation and smoothness of nanostructured Bi 2Te 3-based alloys by electrochemical and mechanical methods
 
AuthorsFeng, HP1
Yu, B2
Chen, S1
Collins, K1
He, C1
Ren, ZF2
Chen, G1
 
KeywordsBismuth telluride based alloys
Chemical mechanical polishing
Electrolysis
Nanostructures
Thermoelectrics
 
Issue Date2011
 
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/electacta
 
CitationElectrochimica Acta, 2011, v. 56 n. 8, p. 3079-3084 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.electacta.2010.12.008
 
AbstractSignificant improvements in the dimensionless thermoelectric figure-of-merit (ZT) for nanostructured bismuth telluride, Bi 2Te 3, and its alloys have been demonstrated. In designing high-performance thermoelectric devices, variations in the thermal and electrical contact resistances due to interfacial effects between the nanostructured alloy and the metallic electrodes remain a significant issue. Smooth scratch-free surfaces should provide a baseline for contact resistance studies. In this paper, the root mean square roughness over a 10 μm 2 of nanostructured bismuth tellurium based alloys was reduced from 133 nm to 1.9 nm by a procedure consisting of electrolysis, mechanical polishing, and chemical mechanical polishing (CMP). Post-CMP cleaning was also developed to yield a wettable surface for the subsequent conformable metallization. © 2010 Elsevier Ltd. All rights reserved.
 
ISSN0013-4686
2013 Impact Factor: 4.086
2013 SCImago Journal Rankings: 1.529
 
DOIhttp://dx.doi.org/10.1016/j.electacta.2010.12.008
 
ISI Accession Number IDWOS:000289133000014
Funding AgencyGrant Number
U.S. Department of Energy, Office of Science, Office of Basic Energy SciencesDE-SC0001299
Funding Information:

The authors thank Jonathan K. Tong and Dr. Sheng Shen for very helpful discussions and editorial assistance, and also thank Daniel Kraemer for fabricating the polishing jig. This work is supported by "Solid State Solar-Thermal Energy Conversion Center (S3TEC)", an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number: DE-SC0001299 (G.C. and Z.F.R.).

 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorFeng, HP
 
dc.contributor.authorYu, B
 
dc.contributor.authorChen, S
 
dc.contributor.authorCollins, K
 
dc.contributor.authorHe, C
 
dc.contributor.authorRen, ZF
 
dc.contributor.authorChen, G
 
dc.date.accessioned2011-10-10T07:13:46Z
 
dc.date.available2011-10-10T07:13:46Z
 
dc.date.issued2011
 
dc.description.abstractSignificant improvements in the dimensionless thermoelectric figure-of-merit (ZT) for nanostructured bismuth telluride, Bi 2Te 3, and its alloys have been demonstrated. In designing high-performance thermoelectric devices, variations in the thermal and electrical contact resistances due to interfacial effects between the nanostructured alloy and the metallic electrodes remain a significant issue. Smooth scratch-free surfaces should provide a baseline for contact resistance studies. In this paper, the root mean square roughness over a 10 μm 2 of nanostructured bismuth tellurium based alloys was reduced from 133 nm to 1.9 nm by a procedure consisting of electrolysis, mechanical polishing, and chemical mechanical polishing (CMP). Post-CMP cleaning was also developed to yield a wettable surface for the subsequent conformable metallization. © 2010 Elsevier Ltd. All rights reserved.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationElectrochimica Acta, 2011, v. 56 n. 8, p. 3079-3084 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.electacta.2010.12.008
 
dc.identifier.citeulike8450014
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.electacta.2010.12.008
 
dc.identifier.epage3084
 
dc.identifier.isiWOS:000289133000014
Funding AgencyGrant Number
U.S. Department of Energy, Office of Science, Office of Basic Energy SciencesDE-SC0001299
Funding Information:

The authors thank Jonathan K. Tong and Dr. Sheng Shen for very helpful discussions and editorial assistance, and also thank Daniel Kraemer for fabricating the polishing jig. This work is supported by "Solid State Solar-Thermal Energy Conversion Center (S3TEC)", an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number: DE-SC0001299 (G.C. and Z.F.R.).

 
dc.identifier.issn0013-4686
2013 Impact Factor: 4.086
2013 SCImago Journal Rankings: 1.529
 
dc.identifier.issue8
 
dc.identifier.scopuseid_2-s2.0-79952445070
 
dc.identifier.spage3079
 
dc.identifier.urihttp://hdl.handle.net/10722/142041
 
dc.identifier.volume56
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/electacta
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofElectrochimica Acta
 
dc.relation.referencesReferences in Scopus
 
dc.subjectBismuth telluride based alloys
 
dc.subjectChemical mechanical polishing
 
dc.subjectElectrolysis
 
dc.subjectNanostructures
 
dc.subjectThermoelectrics
 
dc.titleStudies on surface preparation and smoothness of nanostructured Bi 2Te 3-based alloys by electrochemical and mechanical methods
 
dc.typeArticle
 
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Author Affiliations
  1. Massachusetts Institute of Technology
  2. Boston College