# Unveiling Electric Field Induced Ultrafast Charge Transfer Dynamics and Photoresponse Enhancement in Gold‐Interlayered Bi<sub>2</sub>Se<sub>3</sub>

https://mdr.nims.go.jp/datasets/405a137a-1c5f-40ce-a574-b23f3111dd93

## File

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## Id

405a137a-1c5f-40ce-a574-b23f3111dd93

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-05T12:06:01.667321Z

## Updated at

2024-10-08T07:30:33.883681Z

## Published at

2024-10-08T07:30:33.950554Z

## Doi

https://doi.org/10.48505/nims.4806

## First published url

https://doi.org/10.1002/adom.202302478

## Date published

2024-03-02

## Recorded date published

2024-4

## Resource type

journal_article

## Manuscript type

authors_original

## Collection



## Title

- title: Unveiling Electric Field Induced Ultrafast Charge Transfer Dynamics and Photoresponse
    Enhancement in Gold‐Interlayered Bi<sub>2</sub>Se<sub>3</sub>
  title_type: original
  lang: en

## Description

- description: "In the realm of optoelectronic applications, the incorporation of
    a metal\r\ninterlayer between layers of a topological material holds significant
    potential.\r\nThe interlayer introduces benefits such as improved charge transfer
    efficiency,\r\ntunable band alignment, plasmonics effect, and enhanced light-matter\r\ninteractions,
    paving the way for more efficient and versatile optoelectronic\r\ndevices. This
    work explores the incorporation of gold between Bi2Se3,\r\nresulting in an enhancement
    in the response time of photoresponse of\r\ninterlayered systems (Bi2Se3-Au-Bi2Se3).
    The introduction of a gold interlayer\r\nbetween Bi2Se3 significantly influences
    the overlayer structure, crystallinity,\r\ncrystallite size, and even phonon behavior.
    Moreover, the responsivity of the\r\ninterlayered device at a bias (2 V) is found
    to have high responsivity with fast\r\nresponse and decay time (\U0001D749r =
    0.1 ms, and \U0001D749d = 24 ms of interlayered\r\nsystems) as compared to intrinsic
    Bi2Se3(\U0001D749r = 0.6 ms, and \U0001D749d = 28 ms). This\r\nchange is attributed
    to the bandgap alteration of the Bi2Se3/Au interface,\r\nwhich is monitored through
    transient spectroscopy performed at different\r\nelectric biases. This study suggests
    that incorporating a gold interlayer holds\r\npotential benefits for various optoelectronic
    applications."
  description_type: abstract
  lang: und

## Creator

- name: Saurabh K. Saini
  role: author
- name: Prince Sharma
  role: author
- name: Sudhanshu Gautam
  role: author
- name: Sahil Verma
  role: author
- name: Kapil Kumar
  role: author
- name: Arshi Gupta
  role: author
- name: J. S. Tawale
  role: author
- name: Sudhir Husale
  role: author
- name: Sunil Singh Kushvaha
  role: author
- name: Sumeet Walia
  role: author
- name: Rajiv Kr. Singh
  role: author
- name: Sahiba Bano
  role: author
  orcid: https://orcid.org/0009-0002-9154-657X
  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
- name: Mahesh Kumar
  role: author

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: thermoelectric
  schema: not_defined

## Rights

- description: 'This is the pre-peer reviewed version of the following article: S.
    K. Saini, P. Sharma, S. Gautam, S. Verma, K. Kumar, A. Gupta, J. S. Tawale, S.
    Husale, S. S. Kushvaha, S. Walia, R. K. Singh, S. Bano, T. Mori, M. Kumar, Unveiling
    Electric Field Induced Ultrafast Charge Transfer Dynamics and Photoresponse Enhancement
    in Gold-Interlayered Bi2Se3. Adv. Optical Mater. 2024, 12, 2302478, which has
    been published in final form at https://doi.org/10.1002/adom.202302478. This article
    may be used for non-commercial purposes in accordance with Wiley Terms and Conditions
    for Use of Self-Archived Versions.'
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Advanced Optical Materials
  issn: '21951071'
  volume: '12'
  issue: '11'
  article_number: '2302478'

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## Fileset

- id: 8dcffca1-c0e2-4b28-b8a4-4f8f65478bae
  filename: MDR-Gold Interlyared Bi2Se3.docx-complete.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 19962816
  md5: a1e8f22cfa9263cc428cf2bec7dc8b26

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filename: MDR-Gold Interlyared Bi2Se3.docx-complete.docx