# Boosting the Emission of Momentum Indirect Interlayer Excitons by an Optical Near Field in Misaligned 2D Heterostructures

https://mdr.nims.go.jp/datasets/fe7c5a17-0f5f-4f9a-8a68-647483036bd1

## File

- [boosting-the-emission-of-momentum-indirect-interlayer-excitons-by-an-optical-near-field-in-misaligned-2d.pdf](https://mdr.nims.go.jp/filesets/af825a0c-c299-4e69-82b1-d4476567633b/download) ([Detail](https://mdr.nims.go.jp/filesets/af825a0c-c299-4e69-82b1-d4476567633b.md))

## Id

fe7c5a17-0f5f-4f9a-8a68-647483036bd1

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-02-14T09:51:26.225179Z

## Updated at

2026-02-16T07:30:58.395562Z

## Published at

2026-02-16T04:57:35.316876Z

## Doi



## First published url

https://doi.org/10.1021/acs.nanolett.5c02703

## Date published

2025-10-15

## Recorded date published

2025-10-15

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Boosting the Emission of Momentum Indirect Interlayer Excitons by an Optical
    Near Field in Misaligned 2D Heterostructures
  title_type: original
  lang: en

## Description

- description: 'The Moiré superlattice potential in van der Waals heterostructures
    localizes the interlayer excitons and modifies the band structure so that their
    emission wavelength can be adjusted substantially. However, twisted structures
    suffer from a poor emission quantum yield and long radiative lifetimes due to
    the angle induced momentum mismatch. Moreover, the vertical orientation of the
    interlayer exciton dipole hampers the collection efficiency. Here, we demonstrate
    that these unfavorable conditions can be fully overcome by embedding the heterostructure
    in a plasmonic circular nanocavity. By adjusting the cavity radius, the emission
    enhancement factor for the interlayer excitons can exceed four orders of magnitude
    due to the synergistic effect of photon momentum enlargement and the promotion
    of the excitation rate, quantum yield and collection efficiency by the optical
    near field. This strategy for engineering light-matter interactions can turn these
    atomically thin heterostructures as alluring as their direct band gap opponents
    in the field of optoelectronics. '
  description_type: abstract
  lang: und

## Creator

- name: Qixing Wang
  role: author
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Jurgen H. Smet
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: 'interlayer excitons
    '
  schema: not_defined
- subject: plasmonic nanocavity
  schema: not_defined
- subject: 'emission enhancement
    '
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-10-07

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## Embargo



## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '25'
  issue: '41'
  start_page: 14800
  end_page: 14807

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## Related item



## Funding

- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: SPP2244
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: JPMJCR24A5
  funder_name: Core Research for Evolutional Science and Technology
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science
- funder_name: Japan Science and Technology Agency
- identifier: '62304186'
  funder_name: National Natural Science Foundation of China
- identifier: 20252BAC200013
  funder_name: Natural Science Foundation of Jiangxi Province
- identifier: S2024KXJJ0001
  funder_name: National Science Foundation of Jiujiang

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## Fileset

- id: af825a0c-c299-4e69-82b1-d4476567633b
  filename: boosting-the-emission-of-momentum-indirect-interlayer-excitons-by-an-optical-near-field-in-misaligned-2d.pdf
  content_type: application/pdf
  size: 4858440
  md5: d81c011d38c8e312f9c74d74de2a120b

## Thumbnail

fileset_id: af825a0c-c299-4e69-82b1-d4476567633b
filename: boosting-the-emission-of-momentum-indirect-interlayer-excitons-by-an-optical-near-field-in-misaligned-2d.pdf