# Data-driven analysis of electron relaxation times in PbTe-type thermoelectric materials

https://mdr.nims.go.jp/datasets/ea8104f9-bcc6-4cfb-b6fb-b85cf0ecee66

## File

- [Data-driven-analysis-of-electron-relaxation-times.pdf](https://mdr.nims.go.jp/filesets/f6f6ff10-0cf6-492c-b5fc-270ac404bf4e/download) ([Detail](https://mdr.nims.go.jp/filesets/f6f6ff10-0cf6-492c-b5fc-270ac404bf4e.md))

## Id

ea8104f9-bcc6-4cfb-b6fb-b85cf0ecee66

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-09T07:44:57.406146Z

## Updated at

2024-10-10T07:31:01.039439Z

## Published at

2024-10-10T07:31:01.109432Z

## Doi



## First published url

https://doi.org/10.1080/14686996.2019.1603885

## Date published

2019-12-31

## Recorded date published

2019-12-31

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Data-driven analysis of electron relaxation times in PbTe-type thermoelectric
    materials
  title_type: original
  lang: en

## Description

- description: Data mining from published papers can generate large experimental datasets
    that have been overlooked in computational materials informatics. We developed
    an open web system Starrydata2 to accelerate a comprehensive digitization of data
    of materials from as-reported plot images in published papers, without sample
    selection based on performance. By plotting results obtained from our dataset
    on experimental thermoelectric properties of 434 samples of rock-salt-type (PbTe-type)
    thermoelectric materials, we revealed differences in electronic structure of parent
    compounds PbTe, PbSe, PbS, and SnTe from just experimental data. We observed that
    the calculated Seebeck coefficients were fairly consistent with experimental data
    for n-type PbTe but not for p-type PbTe, indicating possible modifications in
    its valence-band electronic structure. We evaluated the electron relaxation time
    τel from 207 reported samples of n-type PbTe by combining calculations and experimental
    data. We found that τel is not a constant but varies by at least two orders of
    magnitude. Achieving long τel was suggested to be critical in increasing the thermoelectric
    figure of merit ZT.
  description_type: abstract
  lang: und

## Creator

- name: Yukari Katsura
  role: author
  orcid: https://orcid.org/0000-0002-8905-2995
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Masaya Kumagai
  role: author
- name: Takushi Kodani
  role: author
- name: Mitsunori Kaneshige
  role: author
- name: Yuki Ando
  role: author
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Sakiko Gunji
  role: author
- name: Yoji Imai
  role: author
- name: Hideyasu Ouchi
  role: author
- name: Kazuki Tobita
  role: author
- name: Kaoru Kimura
  role: author
- name: Koji Tsuda
  role: author
  orcid: https://orcid.org/0000-0002-4288-1606
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Informa UK Limited

## Managing organization



## Keyword

- subject: materials informatics
  schema: not_defined
- subject: database
  schema: not_defined
- subject: data curation
  schema: not_defined
- subject: thermoelectric materials
  schema: not_defined
- subject: first-principles calculation
  schema: not_defined
- subject: electron relaxation time
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science and Technology of Advanced Materials
  issn: '14686996'
  volume: '20'
  issue: '1'
  start_page: 511
  end_page: 520

## Conference



## Related item



## Funding

- identifier: "“Materials Research by Information Integration” Initiative (MI2I) project
    of the Support Program for Starting Up Innovation Hub"
  funder_name: Japan Science and Technology Agency
- identifier: 16K14379
  funder_name: KAKENHI
- identifier: H30-463
  funder_name: Watanabe memorial foundation for the advancement of new technology

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: f6f6ff10-0cf6-492c-b5fc-270ac404bf4e
  filename: Data-driven-analysis-of-electron-relaxation-times.pdf
  content_type: application/pdf
  size: 1536020
  md5: f8445a3b856c22cc40be934822a960ed

## Thumbnail

fileset_id: f6f6ff10-0cf6-492c-b5fc-270ac404bf4e
filename: Data-driven-analysis-of-electron-relaxation-times.pdf