# Thermoelectric Properties of Single-Phase n-Type Bi<sub>14</sub>Te<sub>13</sub>S<sub>8</sub>

https://mdr.nims.go.jp/datasets/ce68af8f-db61-42d1-ae1f-08b39f1aa27a

## File

- [Iodine_doped_Bi14Te13S8 - 181023_IS.docx](https://mdr.nims.go.jp/filesets/eeb308c4-4a70-4418-a039-bc1300e30c98/download) ([Detail](https://mdr.nims.go.jp/filesets/eeb308c4-4a70-4418-a039-bc1300e30c98.md))
- [SupportingDocs-Iodine doped.docx](https://mdr.nims.go.jp/filesets/ca88a35e-ea8d-4e6e-90e8-b14bdf73f9dc/download) ([Detail](https://mdr.nims.go.jp/filesets/ca88a35e-ea8d-4e6e-90e8-b14bdf73f9dc.md))

## Id

ce68af8f-db61-42d1-ae1f-08b39f1aa27a

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-03-27T13:32:24.033178Z

## Updated at

2024-07-29T07:30:15.296169Z

## Published at

2024-07-29T07:30:15.645840Z

## Doi

https://doi.org/10.48505/nims.4608

## First published url

https://doi.org/10.1021/acsaelm.3c01615

## Date published

2024-02-27

## Recorded date published

2024-2-27

## Resource type

journal_article

## Manuscript type

authors_original

## Collection



## Title

- title: Thermoelectric Properties of Single-Phase n-Type Bi<sub>14</sub>Te<sub>13</sub>S<sub>8</sub>
  title_type: original
  lang: en

## Description

- description: Bismuth telluride (Bi2Te3) and its alloys are among the best thermoelectric
    materials at room temperature. Bi14Te13S8, a material with a similar crystal structure,
    contains sulphur that can potentially improve thermoelectric performance through
    widening bandgap and reduced lattice thermal conductivity. This compound forms
    in sulphur added Bi2Te3 alloys. Here, polycrystalline iodine-doped Bi14Te13S8
    sample is investigated; an optimum iodine concentration of 1 at% resulted in the
    power factor of 3.5 mWm−2 K−1 at room temperature. Iodine doping reduced the lattice
    thermal conductivity for more than 30% by enhancing phonon scattering. An improved
    thermoelectric figure of merit zT of ∼0.29 at 520 K was obtained for 1-1.5 at%
    iodine doped Bi14Te13S8. First-principles calculations indicate that Bi14Te13S8
    has a larger band gap compared to bismuth telluride, which allows for a reduction
    in the bipolar effect, however, a lower effective mass reduced the thermopower
    for a similar carrier concentration. This study demonstrates that tuned iodine
    doping can effectively optimise the thermoelectric performance of Bi14Te13S8,
    highlighting its contribution in multiphase sulphur alloyed Bi2Te3-based materials.
  description_type: abstract
  lang: und

## Creator

- name: Raphael Fortulan
  role: author
- name: Sima Aminorroaya Yamini
  role: author
  orcid: https://orcid.org/0000-0002-2312-8272
- name: Azib Juri
  role: author
- name: Illia Serhiienko
  role: author
  orcid: https://orcid.org/0000-0002-3072-9412
- name: Takao Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: thermoelectric
  schema: not_defined

## Rights

- description: This document is the unedited Author’s version of a Submitted Work
    that was subsequently accepted for publication in ACS Applied Electronic Materials,
    copyright © 2024 American Chemical Society after peer review. To access the final
    edited and published work see https://doi.org/10.1021/acsaelm.3c01615
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: ACS Applied Electronic Materials
  issn: '26376113'
  volume: '6'
  issue: '2'
  start_page: 1283
  end_page: 1291

## Conference



## Related item



## Funding

- identifier: Grant Agreement No. 801604
  funder_name: H2020 Marie Sklodowska-Curie Actions
- identifier: Grant Number JPMJMI19A1
  funder_name: JST Mirai Program
- identifier: Grant Number JPMJSP2124
  funder_name: JST SPRING

## 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: eeb308c4-4a70-4418-a039-bc1300e30c98
  filename: Iodine_doped_Bi14Te13S8 - 181023_IS.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 8157174
  md5: 365369f3901353535fb3824141e91245
- id: ca88a35e-ea8d-4e6e-90e8-b14bdf73f9dc
  filename: SupportingDocs-Iodine doped.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 2245595
  md5: 37dfd92db4f2dc74b4e1765d23ff03de

## Thumbnail

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filename: Iodine_doped_Bi14Te13S8 - 181023_IS.docx