Show simple item record

dc.contributor.authorKim, Cham
dc.contributor.authorLopez, David Humberto
dc.date.accessioned2022-03-18T23:03:50Z
dc.date.available2022-03-18T23:03:50Z
dc.date.issued2022-02-07
dc.identifier.citationKim, C., & Lopez, D. H. (2022). Energy filtering and phonon scattering effects in Bi2Te3-PEDOT:PSS composite resulting in enhanced n-type thermoelectric performance. Applied Physics Letters.en_US
dc.identifier.issn0003-6951
dc.identifier.doi10.1063/5.0076952
dc.identifier.urihttp://hdl.handle.net/10150/663681
dc.description.abstractWe blend n-type Bi2Te3 with an inexpensive abundant conducting polymer, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), to gain a bulk-structured composite, in which energy filtering and phonon scattering effects should occur at the interface of two components. The composite records somewhat higher electrical resistivity than pristine Bi2Te3, because the interface possibly interrupts carrier transport. However, the composite completely compensates for the resistivity increment with a significant increase in the Seebeck coefficient, which is caused by energy filtering effects at the interface; thus, it exhibits the improved power factor. The composite also records a much lower thermal conductivity than the pristine Bi2Te3 because of phonon scattering effects at the interface. The composite induces significant decoupling of electrical and thermal properties, thus affording the remarkably enhanced figure of merits (ZTmax ∼1.19 at 132 °C, ZTave ∼1.14 at 50-150 °C), which are approximately double those of the pristine Bi2Te3. The ZT values are not only predominant among the performance of n-type binary Bi2Te3, but they are also as competent as the excellent performance of n-type ternary Bi2(Te,Se)3 previously reported.en_US
dc.description.sponsorshipDaegu Gyeongbuk Institute of Science and Technologyen_US
dc.language.isoenen_US
dc.publisherAIP Publishingen_US
dc.rights© 2022 Author(s). Published under an exclusive license by AIP Publishing.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en_US
dc.titleEnergy filtering and phonon scattering effects in Bi2Te3–PEDOT:PSS composite resulting in enhanced n-type thermoelectric performanceen_US
dc.typeArticleen_US
dc.identifier.eissn1077-3118
dc.contributor.departmentDepartment of Chemical and Environmental Engineering, University of Arizonaen_US
dc.identifier.journalApplied Physics Lettersen_US
dc.description.note12 month embargo; published online: 10 February 2022en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.identifier.pii10.1063/5.0076952
dc.source.journaltitleApplied Physics Letters
dc.source.volume120
dc.source.issue6
dc.source.beginpage063903


Files in this item

Thumbnail
Name:
5.0076952.pdf
Embargo:
2023-02-10
Size:
4.814Mb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record