# Thermoelectric power factor of composites

https://mdr.nims.go.jp/datasets/011b9363-6002-45f1-a645-67d389f334b5

## File

- [MDR-On_the_PF_composites.pdf](https://mdr.nims.go.jp/filesets/678a5e4b-807b-4e3a-9a4e-475fea2f67fd/download) ([Detail](https://mdr.nims.go.jp/filesets/678a5e4b-807b-4e3a-9a4e-475fea2f67fd.md))

## Id

011b9363-6002-45f1-a645-67d389f334b5

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-06T00:34:03.547453Z

## Updated at

2024-10-08T03:31:05.700107Z

## Published at

2024-10-08T03:31:05.806780Z

## Doi

https://doi.org/10.48505/nims.4815

## First published url

https://doi.org/10.1103/physrevapplied.21.014002

## Date published

2024-01-02

## Recorded date published

2024-1

## Resource type

journal_article

## Manuscript type

authors_original

## Collection



## Title

- title: Thermoelectric power factor of composites
  title_type: original
  lang: en

## Description

- description: To improve the performance of thermoelectric materials, a highly effective
    and widely implemented approach is to create multi-phase composites. These composites
    are designed to impede phononic heat transport, which accounts for the majority
    of thermal conductivity in conventional thermoelectric semiconductors. In 1999,
    Bergman and Fel reported that also the electronic properties, specifically the
    power factor can be significantly enhanced in two-phase composites consisting
    of a highly-conducting, simple metal and a high-performance thermoelectric arranged
    in an optimal manner, sparking great experimental interest. In this work, we challenge
    the theoretical results of Bergman and Fel and the conclusions drawn therein by
    utilizing a simple serial model. We show that, while the improvement of the power
    factor is indeed extraordinary, the results lead to a misleading interpretation
    of the overall thermoelectric performance of the material. As a result, we argue
    that the power factor is not a suitable metric for evaluating multi-phase materials
    and composites and that the figure of merit must be used instead. Nonetheless,
    we demonstrate that the best thermoelectric composite consists of a highly conductive
    metal and a high-performance thermoelectric.
  description_type: abstract
  lang: und

## Creator

- name: A. Riss
  role: author
- name: F. Garmroudi
  role: author
- name: M. Parzer
  role: author
- name: A. Pustogow
  role: author
- name: T. Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846
  organization: National Institute for Materials Science
- name: E. Bauer
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: thermoelectric
  schema: not_defined

## Rights

- description: "© 2024 American Physical Society"
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Physical Review Applied
  issn: '23317019'
  volume: '21'
  issue: '1'
  article_number: '014002'

## Conference



## Related item



## Funding

- identifier: JPMJMI19A1
  funder_name: Japan Science and Technology Agency

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Fileset

- id: 678a5e4b-807b-4e3a-9a4e-475fea2f67fd
  filename: MDR-On_the_PF_composites.pdf
  content_type: application/pdf
  size: 613609
  md5: eb99ba6637716e1921d0d76ce15f8dfd

## Thumbnail

fileset_id: 678a5e4b-807b-4e3a-9a4e-475fea2f67fd
filename: MDR-On_the_PF_composites.pdf