# Thermoelectric, magnetotransport, and ultrafast dynamics of bismuth telluride thin films grown using pulsed laser deposition: Effects of substrate temperature and post-annealing

https://mdr.nims.go.jp/datasets/76699929-aaac-4b9a-8da7-a798bca3afc7

## File

- [Revised_Manuscript-21_Feb_2026-submission3.pdf](https://mdr.nims.go.jp/filesets/35acd94d-51d8-40e0-8c5a-3064563b1215/download) ([Detail](https://mdr.nims.go.jp/filesets/35acd94d-51d8-40e0-8c5a-3064563b1215.md))
- [STAM-2025-0337.zip](https://mdr.nims.go.jp/filesets/c498b6a8-d764-4f29-999a-b91ed7348f80/download) ([Detail](https://mdr.nims.go.jp/filesets/c498b6a8-d764-4f29-999a-b91ed7348f80.md))

## Id

76699929-aaac-4b9a-8da7-a798bca3afc7

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-03-24T02:04:27.798963Z

## Updated at

2026-03-24T04:08:14.610218Z

## Published at

2026-03-24T07:24:12.640859Z

## Doi

https://doi.org/10.48505/nims.6233

## First published url

https://doi.org/10.1080/14686996.2026.2639789

## Date published

2026-12-31

## Recorded date published

2026-12-31

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: 'Thermoelectric, magnetotransport, and ultrafast dynamics of bismuth telluride
    thin films grown using pulsed laser deposition: Effects of substrate temperature
    and post-annealing'
  title_type: original
  lang: en

## Description

- description: n-Type Bi2Te3 and Bi4Te5 thin films were grown on SiO2/Si substrates
    via pulsed laser deposition (PLD) at substrate temperatures (TS) ranging from
    25°C to 350°C under 220 mTorr He. Film morphology evolved from nanoparticles to
    layered hexagonal platelets with increasing TS, accompanied by a shift in preferred
    orientation from (015) to highly (00 l)-oriented textures. Composition varied
    from Te-rich at low TS to Te-deficient at 350°C. Near-stoichiometric and (00 l)-textured
    Bi2Te3 thin films deposited at 250–300°C exhibited reduced carrier concentration
    (~9.5 × 1019 cm−3), significantly enhanced mobility (up to 81.2 cm2/V·s), and
    a maximum thermoelectric (TE) power factor (PF) of 20.0 µW·cm−1·K−2. To further
    enhance the TE performance, Bi2Te3 films grown at 200, 250, and 300°C were in-situ
    annealed in helium gas at 220 mTorr for 60 min at annealing temperatures (TA)
    of 200, 250, 300, and 350°C. Simultaneous tuning of TS and TA revealed a processing
    window for optimized PFs, achieving a peak value of 23.8 µW·cm−1·K−2 for the film
    grown at 250°C and annealed at 250°C– a 19% improvement over the as-deposited
    counterpart. Additionally, low-temperature transport measurements exhibited two-dimensional
    weak antilocalization behavior in the optimized TE Bi2Te3 thin film, suggesting
    the presence of topological surface states. Ultrafast spectroscopy further revealed
    coherent optical and acoustic phonon modes at 1.87 THz and 37.3 GHz, respectively.
  description_type: abstract
  lang: en

## Creator

- name: Le Thi Cam Tuyen
  role: author
  organization: Chang Gung University
  department: a Division of Natural Science, Center for Education
- name: Bih-Show Lou
  role: author
- name: Jyh-Wei Lee
  role: author
- name: Ngo Ngoc Uyen
  role: author
- name: Phuoc Huu Le
  role: author
- name: Chien-Neng Liao
  role: author
- name: Chih-Wei Luo
  role: author
- name: Jiunn-Yuan Lin
  role: author

## Contact agent



## Publisher

organization: Taylor & Francis

## Managing organization



## Keyword

- subject: Bi2Te3
  schema: not_defined
- subject: pulsed laser deposition
  schema: not_defined
- subject: thermoelectrics
  schema: not_defined
- subject: magnetotransport
  schema: not_defined
- subject: pump-probe
  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: '27'
  issue: '1'
  article_number: '2639789'

## Conference



## Related item



## Funding



## 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: 35acd94d-51d8-40e0-8c5a-3064563b1215
  filename: Revised_Manuscript-21_Feb_2026-submission3.pdf
  content_type: application/pdf
  size: 2558345
  md5: f0d16483356260fa51dcaf7051969d35
- id: c498b6a8-d764-4f29-999a-b91ed7348f80
  filename: STAM-2025-0337.zip
  content_type: application/zip
  size: 1292071
  md5: 7e57126acc85ce196513401240d366f8

## Thumbnail

fileset_id: 35acd94d-51d8-40e0-8c5a-3064563b1215
filename: Revised_Manuscript-21_Feb_2026-submission3.pdf