DC Field | Value | Language |
---|---|---|
dc.contributor.author | Novak, Travis G. | ko |
dc.contributor.author | Kim, Jin | ko |
dc.contributor.author | Kim, Jungmo | ko |
dc.contributor.author | Shin, Hosun | ko |
dc.contributor.author | Tiwari, Anand P. | ko |
dc.contributor.author | Song, Jae Yong | ko |
dc.contributor.author | Jeon, Seokwoo | ko |
dc.date.accessioned | 2019-08-22T01:20:04Z | - |
dc.date.available | 2019-08-22T01:20:04Z | - |
dc.date.created | 2019-08-19 | - |
dc.date.created | 2019-08-19 | - |
dc.date.issued | 2019-10 | - |
dc.identifier.citation | 2D MATERIALS, v.6, no.4 | - |
dc.identifier.issn | 2053-1583 | - |
dc.identifier.uri | http://hdl.handle.net/10203/264377 | - |
dc.description.abstract | Films made from exfoliated graphene flakes have great potential in flexible thermoelectric devices, but are generally limited by the poor quality of flakes and the lack of effective n-doping strategies. The oxidative exfoliation routes typically employed to make reduced graphene oxide (rGO) reduce electrical conductivity because of defects in the basal plane, and typically creates p-type flakes because of the many remaining oxygenous groups. Here, an alternative synthesis strategy using non-oxidative intercalation and molecular adsorption is employed to create high-quality n-type graphene films. A film produced from these non-oxidized graphene flakes (NOGF) showed a Seebeck coefficient of -45.3 mu V K-1 and electrical conductivity of 3280 S cm(-1) at room temperature, both of which are significantly better than previously reported graphene thermoelectric films. This resulted in an extremely high power factor of 673 mu W m(-1) K-2, the highest ever reported from a film made of any 2D material. The films were also shown to be extremely robust under bending conditions, with less than 3% electrical conductivity loss after 1000 bending cycles at a bending radius of 3 mm. Finally, the practicality of the films was demonstrated with a flexible thermoelectric device that generated 2.2 mV using only body heat. | - |
dc.language | English | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.title | Flexible thermoelectric films with high power factor made of non-oxidized graphene flakes | - |
dc.type | Article | - |
dc.identifier.wosid | 000477588600001 | - |
dc.identifier.scopusid | 2-s2.0-85071119654 | - |
dc.type.rims | ART | - |
dc.citation.volume | 6 | - |
dc.citation.issue | 4 | - |
dc.citation.publicationname | 2D MATERIALS | - |
dc.identifier.doi | 10.1088/2053-1583/ab2c32 | - |
dc.contributor.localauthor | Jeon, Seokwoo | - |
dc.contributor.nonIdAuthor | Shin, Hosun | - |
dc.contributor.nonIdAuthor | Tiwari, Anand P. | - |
dc.contributor.nonIdAuthor | Song, Jae Yong | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | flexible | - |
dc.subject.keywordAuthor | thermoelectric | - |
dc.subject.keywordAuthor | graphene | - |
dc.subject.keywordAuthor | n-type | - |
dc.subject.keywordAuthor | doping | - |
dc.subject.keywordAuthor | waste heat | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | FLUORIDE COMPOSITE | - |
dc.subject.keywordPlus | CARBON NANOTUBES | - |
dc.subject.keywordPlus | INTERCALATION | - |
dc.subject.keywordPlus | GENERATORS | - |
dc.subject.keywordPlus | POLYMER | - |
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