# Aliovalent–Isovalent In/Bi Codoping Strategy for Enhanced Thermoelectric Performance in SrCuSb Zintl Phases

https://mdr.nims.go.jp/datasets/67aa9dda-a366-4a82-b92a-9687e43a0dc1

## File

- [Manuscript_clean_R2.docx](https://mdr.nims.go.jp/filesets/c09626c6-2cf4-429a-9c56-9b68b1d8f75e/download) ([Detail](https://mdr.nims.go.jp/filesets/c09626c6-2cf4-429a-9c56-9b68b1d8f75e.md))

## Id

67aa9dda-a366-4a82-b92a-9687e43a0dc1

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-07-22T03:59:58.556483Z

## Updated at

2026-07-23T08:15:48.649804Z

## Published at

2026-07-23T09:30:03.230099Z

## Doi

https://doi.org/10.48505/nims.6422

## First published url

https://doi.org/10.1021/acs.chemmater.6c00198

## Date published

2026-05-12

## Recorded date published

2026-5-12

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Aliovalent–Isovalent In/Bi Codoping Strategy for Enhanced Thermoelectric
    Performance in SrCuSb Zintl Phases
  title_type: original
  lang: en

## Description

- description: A co-doping approach is implemented by substituting In and Bi for Sb
    in SrCuSb, thereby simultaneously tuning carrier transport and enhancing phonon
    scattering. Polycrystalline samples synthesized by melting, ball milling, and
    spark plasma sintering shows that In adjusts the hole concentration and preserves
    high mobility. At the same time, Bi introduces mass/strain-field disorder that
    softens the lattice and thereby suppresses lattice thermal conductivity. Co-doping
    also suppresses the formation of secondary phases, improving phase purity and
    carrier mobility. The optimized composition exhibits a high power-factor of ~1.9
    mW/m·K2 and a low lattice thermal conductivity of ~ 0.54 W/m·K at 773 K, yielding
    a peak zT of ~0.65. The average zT over 300–773 K increases from 0.17 for pristine
    SrCuSb to 0.32, corresponding to an ~87 % enhancement.
  description_type: abstract
  lang: und

## Creator

- name: Vikrant Trivedi
  role: author
  orcid: https://orcid.org/0000-0002-6999-5646
  organization: National Institute for Materials Science
- name: Naohito Tsujii
  role: author
  orcid: https://orcid.org/0000-0002-6181-5911
  organization: National Institute for Materials Science
- name: Isao Ohkubo
  role: author
  orcid: https://orcid.org/0000-0002-4187-0112
  organization: National Institute for Materials Science
- name: Takao Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Thermoelectric material
  schema: not_defined
- subject: Zintl phase
  schema: not_defined
- subject: SrCuSb
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-04-27

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Chemistry of Materials
  issn: '15205002'
  volume: '38'
  issue: '9'
  start_page: 4682
  end_page: 4694

## Conference



## Related item



## Funding

- identifier: 24K00590
  funder_name: Japan Society for the Promotion of Science
- identifier: 24K21692
  funder_name: Japan Society for the Promotion of Science
- identifier: JPMJMI19A1
  funder_name: Japan Science and Technology Corporation

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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: c09626c6-2cf4-429a-9c56-9b68b1d8f75e
  filename: Manuscript_clean_R2.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 8064476
  md5: 3fdf42c0c0f41855f77c32ceae95f8a5

## Thumbnail

fileset_id: c09626c6-2cf4-429a-9c56-9b68b1d8f75e
filename: Manuscript_clean_R2.docx