# Imaging the photophysics of organic semiconductors using polarisation-resolved and near-field optical spectroscopies

https://mdr.nims.go.jp/datasets/9d68d746-ee1a-4798-8142-f5f2c7cd3fca

## File

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## Id

9d68d746-ee1a-4798-8142-f5f2c7cd3fca

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-02-28T11:16:26.725425Z

## Updated at

2026-03-02T23:30:24.105379Z

## Published at

2026-03-02T08:20:29.644064Z

## Doi



## First published url

https://doi.org/10.1016/j.optcom.2025.131945

## Date published

2025-04-30

## Recorded date published

2025-9

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Imaging the photophysics of organic semiconductors using polarisation-resolved
    and near-field optical spectroscopies
  title_type: original
  lang: en

## Description

- description: Imaging techniques that enable the structure of organic semiconductors
    to be determined across length scales are essential for optimisation of their
    luminescence properties. In this study, we prepare well-ordered monolayer films
    of perylene-3,4,9,10-tetracarboxylic-3,4,9,10-diimide (PTCDI) both on the surface
    of hexagonal boron nitride (hBN) and confined within few-layer thick hBN vertical
    heterostructures, and apply polarisation-resolved and tip-enhanced optical spectroscopies
    to image the effects of molecular orientation and dielectric environment on the
    photoluminescence (PL) exhibited by this prototype organic semiconductor translated
    at the micro and nano length scales, respectively. Using this combined approach,
    we show that PTCDI self-assembles into two discrete types of few-micron-sized
    grains at sub-monolayer coverage, each exhibiting characteristic shifts in PL
    emission energy related to their registry on hBN surfaces. Through examination
    of the near-field PL spectra extracted from images of individual grains, we further
    reveal the existence of nanoscale inhomogeneities within the molecular layer which
    influence both the energy of PL emission and ratio of vibronic sidebands and provide
    compelling evidence that variations in the degree of resonant coupling are present
    on length scales comparable to the resolution of the near-field measurement. Together
    these imaging tools enable a more comprehensive understanding of the molecular-level
    photophysics of organic semiconductor aggregates to be established, all under
    ambient conditions, critical for their development and integration into next-generation
    technologies, including light-emitting diodes, solar cells and sensors.
  description_type: abstract
  lang: und

## Creator

- name: James Kerfoot
  role: author
- name: Tyler James
  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: Peter H. Beton
  role: author
- name: Graham A. Rance
  role: author
- name: Michael W. George
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

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## Keyword

- subject: 'organic semiconductors
    '
  schema: not_defined
- subject: 'photophysics
    '
  schema: not_defined
- subject: 'near-field optical spectroscopy
    '
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-05-01

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Optics Communications
  issn: '00304018'
  volume: '588'
  article_number: '131945'

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## Fileset

- id: 720e74b8-7f97-4465-aad8-f0e60bed2b54
  filename: 1-s2.0-S0030401825004730-main.pdf
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  size: 6621896
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## Thumbnail

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filename: 1-s2.0-S0030401825004730-main.pdf