# High thermoelectric performance of BiCuSeO by optimized carrier concentration and point defect scattering through a Cr-induced compositing effect

https://mdr.nims.go.jp/datasets/59b4214e-1147-4507-8b38-5cd8ceb91fdc

## Files

- [MDI-JMCC-BCSO.pdf](https://mdr.nims.go.jp/filesets/e285ceb7-fb58-4962-b469-4e747fc87a97/download) ([Detail](https://mdr.nims.go.jp/filesets/e285ceb7-fb58-4962-b469-4e747fc87a97.md))

## Id

59b4214e-1147-4507-8b38-5cd8ceb91fdc

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-11-08T15:53:44.690206Z

## Updated at

2025-11-11T03:30:14.239144Z

## Published at

2025-11-11T03:22:33.015374Z

## Doi

https://doi.org/10.48505/nims.5886

## First published url

https://doi.org/10.1039/d4tc05369a

## Date published

2025-03-11

## Recorded date published

2025-4-10

## Resource type

journal_article

## Manuscript type

authors_original

## Collection



## Title

- title: High thermoelectric performance of BiCuSeO by optimized carrier concentration
    and point defect scattering through a Cr-induced compositing effect
  title_type: original
  lang: en

## Description

- description: BiCuSeO has intrinsically low electrical conductivity, high Seebeck
    coefficient and low thermal conductivity. Therefore, the improvement of BiCuSeO
    thermoelectric performance focuses on enhancing its electrical conductivity. In
    this study, we report one of the strategies to optimize carrier concentration
    by Cr doped on Cu site. After doping with Cr, enhanced electrical conductivity
    coupled with a moderate Seebeck coefficient leads to power factor of ~0.4 – 0.6
    mW/mK2 at 323 – 773 K. It is increased of ~4 – 6 times compared to pure BiCuSeO.
    Moreover, Cr doping reduces lattice thermal conductivity by ~21% as confirmed
    by both experimental result and Callaway model calculation. The analysis indicates
    that the lattice thermal conductivity can be reduced to 0.5 W m-1 K-1 at 773 K
    through the combined effect of point defect and phonon – electron scattering.
    The combination of optimized power factor and intrinsically low thermal conductivity
    result in high ZTmax and ZTaverage. The ZTmax and ZTaverage values were obtained
    in the BiCu0.96Cr0.04SeO sample of ~1.0 at 675 K and ~0.83 at 323 – 773 K, respectively.
    The high ZT of ~0.9 is realized over a broad temperature range from 473 to 773
    K. This strategy makes BiCuSeO a promising candidate for medium temperature thermoelectric
    applications.
  description_type: abstract
  lang: und

## Creator

- name: Asep Ridwan Nugraha
  role: author
- name: Shamim Sk
  role: author
  orcid: https://orcid.org/0000-0001-7644-7093
  organization: National Institute for Materials Science
- name: Andrei Novitskii
  role: author
  orcid: https://orcid.org/0000-0002-7304-806X
  organization: National Institute for Materials Science
- name: Dedi
  role: author
- name: Fainan Failamani
  role: author
- name: Bambang Prijamboedi
  role: author
- name: Takao Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846
  organization: National Institute for Materials Science
- name: Agustinus Agung Nugroho
  role: author

## Contact agent



## Publisher

organization: Royal Society of Chemistry (RSC)

## Managing organization



## Keyword

- subject: thermoelectric
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of Materials Chemistry C
  issn: '20507526'
  volume: '13'
  issue: '15'
  start_page: 7617
  end_page: 7624

## Conference



## Related item



## Funding

- funder_name: Lembaga Pengelola Dana Pendidikan
- identifier: JPMJMI19A1
  funder_name: JST-Mirai Program

## 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: e285ceb7-fb58-4962-b469-4e747fc87a97
  filename: MDI-JMCC-BCSO.pdf
  content_type: application/pdf
  size: 2655716
  md5: 2608437da2c8ddbd74e0fdd11064861b

## Thumbnail

fileset_id: e285ceb7-fb58-4962-b469-4e747fc87a97
filename: MDI-JMCC-BCSO.pdf