# Generated White Light Having Adaptable Chromaticity and Emission, Using Spectrally Reconfigurable Microcavities

https://mdr.nims.go.jp/datasets/c1aa4e4d-53da-4d97-a4eb-d284fbd33dab

## Files

- [2298 Nagao Chromaticity MS v6-BKB1_TN MDR.pdf](https://mdr.nims.go.jp/filesets/1eda8f72-52c1-41c5-af7e-89e8eef23cd5/download) ([Detail](https://mdr.nims.go.jp/filesets/1eda8f72-52c1-41c5-af7e-89e8eef23cd5.md))

## Id

c1aa4e4d-53da-4d97-a4eb-d284fbd33dab

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-25T07:29:03.674131Z

## Updated at

2024-10-28T07:30:24.939628Z

## Published at

2024-10-28T07:30:25.078337Z

## Doi

https://doi.org/10.48505/nims.4905

## First published url

https://doi.org/10.1002/advs.202407090

## Date published

2024-09-04

## Recorded date published

2024-11

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Generated White Light Having Adaptable Chromaticity and Emission, Using Spectrally
    Reconfigurable Microcavities
  title_type: original
  lang: en

## Description

- description: Metal-free, luminescent, carbogenic nanomaterials (LCNMs) constitute
    a novel class of optical materials with　low environmental impact. LCNMs, e.g.,
    carbon dots (CDs), graphitic carbon nitride (g-C3N4), and carbonized　polymer microspheres
    (CPM) show strong blue/cyan emissions, but rather weak yellow/red emission. This　has
    been a serious drawback in applying them to light-emitting and bio-imaging applications.
    Here, by　integrating single-component LCNMs in photonic microcavities, the study
    spectroscopically engineers the　coupling between photonic modes in these microcavities
    and optical transitions to “reconfigure” the emission　spectra of these luminescent
    materials. Resonant photons are confined in the microcavity, which allows　selective
    re-excitation of phosphors to effectively emit down-converted photons. The down-converted
    photons re-excite the phosphors and are multiply recycled, leading to enhanced
    yellow/red emissions and resulting in white-light emission (WLE). Furthermore,
    by adjusting photonic stop bands of microcavity components, color adaptable (cool,
    pure, and warm) WLE is flexibly generated, which precisely follows the black-body
    Planckian locus in the chromaticity diagram. The proposed approach offers practical
    low-cost chromaticity-adjustable WLE from single-component, luminescent materials
    without any chemical or surface modification, or　elaborate machinery and processing,
    paving the way for practical WLE devices.
  description_type: abstract
  lang: eng

## Creator

- name: Barun Kumar Barman
  role: author
  orcid: https://orcid.org/0000-0002-9894-1890
  organization: National Institute for Materials Science
  department: Research Center for Materials Nanoarchitectonics (MANA)/Quantum Materials
    Field/Photonics Nano Engineering Group
  ror: https://ror.org/026v1ze26
- name: David Hernández-Pinilla
  role: author
  organization: National Institute for Materials Science
  department: International Center for Materials Nanoarchitectonics/Nano-System Field/Photonics
    Nano-Engineering Group
  ror: https://ror.org/026v1ze26
- name: Ovidiu Cretu
  role: author
  orcid: https://orcid.org/0000-0002-1822-8172
  organization: National Institute for Materials Science
  department: Center for Basic Research on Materials/Advanced Materials Characterization
    Field/Electron Microscopy Group
  ror: https://ror.org/026v1ze26
- name: Jun Kikkawa
  role: author
  orcid: https://orcid.org/0000-0003-0659-1844
  organization: National Institute for Materials Science
  department: Center for Basic Research on Materials/Advanced Materials Characterization
    Field/Electron Microscopy Group
  ror: https://ror.org/026v1ze26
- name: Koji Kimoto
  role: author
  orcid: https://orcid.org/0000-0002-3927-0492
  organization: National Institute for Materials Science
  department: Center for Basic Research on Materials/Advanced Materials Characterization
    Field/Electron Microscopy Group
  ror: https://ror.org/026v1ze26
- name: Tadaaki Nagao
  role: author
  orcid: https://orcid.org/0000-0002-6746-2686
  organization: National Institute for Materials Science
  department: Research Center for Materials Nanoarchitectonics (MANA)/Quantum Materials
    Field/Photonics Nano Engineering Group
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Wiley-Blackwell

## Managing organization



## Keyword

- subject: chromaticity converter
  schema: not_defined
- subject: carbon dots
  schema: not_defined
- subject: rare-earth free
  schema: not_defined
- subject: multilayer
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Advanced Science
  issn: '21983844'
  article_number: '2407090'

## Conference



## Related item



## Funding

- identifier: JPMJCR13C3
  funder_name: JST
- identifier: 24K17589
  funder_name: JSPS

## 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



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## Custom property



## Fileset

- id: 1eda8f72-52c1-41c5-af7e-89e8eef23cd5
  filename: 2298 Nagao Chromaticity MS v6-BKB1_TN MDR.pdf
  content_type: application/pdf
  size: 9848589
  md5: da8795982eb96e64add08eea91d03a00

## Thumbnail

fileset_id: 1eda8f72-52c1-41c5-af7e-89e8eef23cd5
filename: 2298 Nagao Chromaticity MS v6-BKB1_TN MDR.pdf