# Blue–Green Emitting Phosphor Ba                    <sub>2</sub>                    LiAlSi                    <sub>2</sub>                    O                    <sub>8</sub>                    :Eu                    <sup>                      2                      +                    </sup>                    for Phosphor-Converted Light-Emitting Diodes via Single-Particle Diagnosis in a Quasi-Quaternary System

https://mdr.nims.go.jp/datasets/13cfb621-da45-4688-81b0-1477b8b4bc71

## File

- [2026.5_blue-green-emitting-phosphor-ba2lialsi2o8-eu2-for-phosphor-converted-light-emitting-diodes-via-single-particle.pdf](https://mdr.nims.go.jp/filesets/9ccd21c2-303a-409e-aadc-0dc5a08475c0/download) ([Detail](https://mdr.nims.go.jp/filesets/9ccd21c2-303a-409e-aadc-0dc5a08475c0.md))

## Id

13cfb621-da45-4688-81b0-1477b8b4bc71

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-06-16T01:05:37.376981Z

## Updated at

2026-06-16T02:39:41.400895Z

## Published at

2026-06-16T05:26:18.726441Z

## Doi



## First published url

https://doi.org/10.1021/acsami.6c02416

## Date published

2026-05-27

## Recorded date published

2026-5-27

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Blue–Green Emitting Phosphor Ba                    <sub>2</sub>                    LiAlSi                    <sub>2</sub>                    O                    <sub>8</sub>                    :Eu                    <sup>                      2                      <b>+</b>                    </sup>                    for
    Phosphor-Converted Light-Emitting Diodes via Single-Particle Diagnosis in a Quasi-Quaternary
    System
  title_type: original
  lang: en

## Description

- description: 'A new blue–green emitting Ba2LiAlSi2O8: Eu2+ phosphor was discovered
    from exploratory experiments in the BaO-Li2O-Al2O3-SiO2 quasi-quaternary system
    using a single-particle-diagnosis approach. Single-crystal X-ray diffraction analysis
    revealed that Ba1.96Eu0.04LiAlSi2O8 crystallizes in a space group of Pna21 (No.
    33) with a = 8.04521(11) Å, b = 19.0484(2) Å, c = 5.02228(6) Å, and Z = 4. The
    crystal structure comprises LiO₄, AlO₄, and SiO₄ tetrahedra, which orderly align
    and form a framework by sharing apical oxygen atoms. Ba atoms are surrounded by
    eight and seven oxygen atoms in the framework. Density functional theory calculations
    corroborated the Al and Si arrangement in the Ba2LiAlSi2O8 crystal structure.
    A single-phase powder of the Ba2LiAlSi2O8: Eu2+ phosphor was successfully obtained
    via a solid-state reaction. This phosphor exhibited a blue–green luminescence
    peak at 497 nm with a full width at half maximum of 85 nm under 372 nm excitation.
    The internal and external quantum efficiencies were 51.0% and 42.7%, respectively.
    The peak intensity at 150°C was 67% of that at room temperature. We fabricated
    pc-LEDs based on 405 nm LED chips combined with Ba2LiAlSi2O8: Eu2+ phosphor, and
    the CIE chromaticity coordinates were in the blue–green region. These results
    indicate that the new Ba2LiAlSi2O8: Eu2+ phosphor is a promising candidate for
    future LED technologies.'
  description_type: abstract
  lang: und

## Creator

- name: Akihiro Nakanishi
  role: author
  orcid: https://orcid.org/0009-0001-1859-261X
  organization: National Institute for Materials Science
- name: Shiro Funahashi
  role: author
  orcid: https://orcid.org/0000-0002-9381-3603
  organization: National Institute for Materials Science
- name: Yukinori Koyama
  role: author
  orcid: https://orcid.org/0000-0002-7090-4430
  organization: National Institute for Materials Science
- name: Hisanori Yamane
  role: author
  organization: National Institute for Materials Science
- name: Kohsei Takahashi
  role: author
  orcid: https://orcid.org/0000-0002-6443-1534
  organization: National Institute for Materials Science
- name: Takayuki Nakanishi
  role: author
  orcid: https://orcid.org/0000-0003-3412-2842
  organization: National Institute for Materials Science
- name: Naoto Hirosaki
  role: author
  orcid: https://orcid.org/0000-0001-9218-9557
  organization: National Institute for Materials Science
- name: Takashi Takeda
  role: author
  orcid: https://orcid.org/0000-0003-2510-4562
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: National Institute for Materials Science
ror: https://ror.org/

## Managing organization



## Keyword

- subject: Eu2+-activated phosphor
  schema: not_defined
- subject: single-crystal X-ray diffraction
  schema: not_defined
- subject: quasi-quaternary system
  schema: not_defined
- subject: new crystal phase
  schema: not_defined
- subject: phosphor-converted LEDs
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-05-14

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: ACS Applied Materials & Interfaces
  issn: '19448252'
  volume: '18'
  issue: '20'
  start_page: 28857
  end_page: 28865

## Conference



## Related item



## Funding

- identifier: JPMJCR19J2
  funder_name: Core Research for Evolutional Science and Technology

## 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: 9ccd21c2-303a-409e-aadc-0dc5a08475c0
  filename: 2026.5_blue-green-emitting-phosphor-ba2lialsi2o8-eu2-for-phosphor-converted-light-emitting-diodes-via-single-particle.pdf
  content_type: application/pdf
  size: 4960424
  md5: 37b503f0abf988abfb48321725db308e

## Thumbnail

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filename: 2026.5_blue-green-emitting-phosphor-ba2lialsi2o8-eu2-for-phosphor-converted-light-emitting-diodes-via-single-particle.pdf