# Optical grade (Gd0.95-xLuxEu0.05)3Al5O12 ceramics with near-zero optical loss: Effects of Lu3+ doping on structural feature, microstructure evolution, and far-red luminescence

https://mdr.nims.go.jp/datasets/48ab174a-69e4-49d2-8e13-97fa0256451e

## File

- [Manuscript (garnet).pdf](https://mdr.nims.go.jp/filesets/2d2bd29f-15b3-4cfc-865d-7f11d56d1913/download) ([Detail](https://mdr.nims.go.jp/filesets/2d2bd29f-15b3-4cfc-865d-7f11d56d1913.md))

## Id

48ab174a-69e4-49d2-8e13-97fa0256451e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-07-22T01:36:54.265717Z

## Updated at

2024-07-23T07:30:20.445717Z

## Published at

2024-07-23T07:30:20.852998Z

## Doi

https://doi.org/10.48505/nims.4602

## First published url

https://doi.org/10.26599/JAC.2024.9220845

## Date published

2023-12-25

## Recorded date published

2024-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: 'Optical grade (Gd0.95-xLuxEu0.05)3Al5O12 ceramics with near-zero optical
    loss: Effects of Lu3+ doping on structural feature, microstructure evolution,
    and far-red luminescence'
  title_type: original
  lang: en

## Description

- description: "A chemical co-precipitation strategy was employed to synthesize a
    series of (Gd0.95−xLuxEu0.05)3Al5O12 (x =0.1−0.95) powder phosphors, followed
    by vacuum sintering to achieve transparent garnet ceramic phosphors. The density
    functional theory indicated Lu3Al5O12 was formed in priority compared with Gd3Al5O12
    during solid-phase reaction. Upon high-temperature sintering, the Lu3+ substitution
    for Gd3+ suppressed point mass diffusion leading to a smaller grain size. The
    in-line transmittances of bulk specimens with x = 0.1, 0.3, 0.5, 0.7, and 0.95
    nm were ~83.5%, 80.1%, 68.8%, 73.7%, and 82.2% at 710 nm (Eu3+ emission center),
    respectively, among which the sample of x = 0.1 exhibited the optical grade with
    near-zero optical loss in agreement with the defect-free single crystal (~100%
    of the theoretical transmittance). The\r\nresulting particle and ceramic materials
    both presented characteristic Eu3+ emission arising from 5D0→7FJ (J = 1−4) transition,
    where the dominant far-red emission at ~710 nm arising from 5D0→7F4 transition
    overlapped with the absorption of phytochrome (PFR). The photoluminescence excitation
    and photoluminescence intensities of (Gd0.95−xLuxEu0.05)3Al5O12 powders and ceramics
    generally increased at a higher Gd3+/Lu3+ ratio. Lu3+ dopants delayed the fluorescence
    lifetime while the bulk samples had shorter lifetime compared to the particle
    counterparts. The transparent (Gd0.85Lu0.1Eu0.05)3Al5O12\r\nceramic phosphor exhibited
    good thermal stability with a high thermal quenching temperature above 533 K.
    The designed ceramic phosphor-converted light-emitting diode had a saturation
    injection current of 435 mA and a current-dependent color rendering index. More
    importantly, our report marked the developmental stage of transparent ceramic
    materials towards zero optical loss."
  description_type: abstract
  lang: eng

## Creator

- name: Zhigang Sun
  role: author
- name: Ji-Guang Li
  role: author
- name: Huiyu Qian
  role: author
- name: Yoshio Sakka
  role: author
  orcid: https://orcid.org/0000-0001-8357-5843
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Tohru S. Suzuki
  role: author
  orcid: https://orcid.org/0000-0001-9458-6863
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Bin Lu
  role: author

## Contact agent



## Publisher

organization: Tsinghua University Press

## Managing organization



## Keyword

- subject: Microstructure evolution
  schema: not_defined
- subject: Crystal structure
  schema: not_defined
- subject: Sintering
  schema: not_defined
- subject: Optical property
  schema: not_defined
- subject: Garnet ceramics
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of Advanced Ceramics
  issn: '22264108'
  volume: '13'
  issue: '1'
  start_page: 113
  end_page: 123

## Conference



## Related item



## Funding



## 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: 2d2bd29f-15b3-4cfc-865d-7f11d56d1913
  filename: Manuscript (garnet).pdf
  content_type: application/pdf
  size: 2050816
  md5: a8a01d5a7659792bc521c7bbea87e0a5

## Thumbnail

fileset_id: 2d2bd29f-15b3-4cfc-865d-7f11d56d1913
filename: Manuscript (garnet).pdf