Realization of high-performance screen-printed flexible thermoelectric generator by improving contact characteristics

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dc.contributor.authorKim, Yongjunko
dc.contributor.authorKim, Sun Jinko
dc.contributor.authorChoi, Hyeongdoko
dc.contributor.authorKim, Choong Sunko
dc.contributor.authorLee, Gyusoupko
dc.contributor.authorPark, Sang Hyunko
dc.contributor.authorCho, Byung-Jinko
dc.date.accessioned2018-01-30T04:19:54Z-
dc.date.available2018-01-30T04:19:54Z-
dc.date.created2017-11-27-
dc.date.created2017-11-27-
dc.date.created2017-11-27-
dc.date.issued2017-12-
dc.identifier.citationADVANCED MATERIALS INTERFACES, v.4, no.23-
dc.identifier.issn2196-7350-
dc.identifier.urihttp://hdl.handle.net/10203/238818-
dc.description.abstractTo fabricate a flexible thermoelectric generator (f-TEG) that can be applied to curvilinear surfaces such as the human body, the screen-printing technique is a practical method for forming the thermoelectric (TE) elements. One of the main obstacles to fabricating high-performance screen-printed f-TEGs is the high contact resistance. In this work, the output power of a screen-printed f-TEG is increased by 80% through engineering of the contact and its formation process. Reduction ambient annealing is a process that removes the surface oxides while modulating the tellurium (Te) concentration on the surface, easily forming a favorable intermetallic compound at the contact interface. The wetting angle of the solder is also drastically reduced by applying an anti-diffusion bilayer. Using these methods, the specific contact resistivity (ρC) is reduced from 8.2 to 3.3 × 10−6 Ω cm−2 and 75 to 4.7 × 10−6 Ω cm−2 for p- and n-type TE material respectively. The device figure of merit measured for one leg is increased from 0.301 to 0.595 and 0.247 to 0.481 for p- and n-type respectively. The improved contact characteristics result in an increase in the output power of the complete module (a 72-couple f-TEG) from 0.25 to 0.4 W at a temperature difference of 40K.-
dc.languageEnglish-
dc.publisherWiley-
dc.titleRealization of high-performance screen-printed flexible thermoelectric generator by improving contact characteristics-
dc.typeArticle-
dc.identifier.wosid000417647800010-
dc.identifier.scopusid2-s2.0-85031489595-
dc.type.rimsART-
dc.citation.volume4-
dc.citation.issue23-
dc.citation.publicationnameADVANCED MATERIALS INTERFACES-
dc.identifier.doi10.1002/admi.201700870-
dc.contributor.localauthorCho, Byung-Jin-
dc.contributor.nonIdAuthorPark, Sang Hyun-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthordevice figure of merit-
dc.subject.keywordAuthorflexible thermoelectric generator-
dc.subject.keywordAuthorscreen-printing technique-
dc.subject.keywordAuthorself-powered wearable system-
dc.subject.keywordAuthorspecific contact resistivity-
dc.subject.keywordPlusPOWER-GENERATION-
dc.subject.keywordPlusTHICK-FILM-
dc.subject.keywordPlusDEVICES-
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