# Oxysulfate, oxysulfide, and oxide red-phosphors from one single hydroxyl sulfate precursor (Gd,Eu)2(OH)4SO4·nH2O: phase evolution, and photoluminescence

https://mdr.nims.go.jp/datasets/a41d45b7-7927-4644-b6d5-002dc2a98ca3

## File

- [APT_three phosphors from LRH.pdf](https://mdr.nims.go.jp/filesets/a66df636-0b38-4401-9fd3-b49a05493b5d/download) ([Detail](https://mdr.nims.go.jp/filesets/a66df636-0b38-4401-9fd3-b49a05493b5d.md))

## Id

a41d45b7-7927-4644-b6d5-002dc2a98ca3

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-11-14T06:52:32.269119Z

## Updated at

2025-11-07T23:30:33.383424Z

## Published at

2025-11-07T23:21:20.949958Z

## Doi

https://doi.org/10.48505/nims.4347

## First published url

https://doi.org/10.1016/j.apt.2023.104271

## Date published

2023-11-08

## Recorded date published

2023-12

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: 'Oxysulfate, oxysulfide, and oxide red-phosphors from one single hydroxyl
    sulfate precursor (Gd,Eu)2(OH)4SO4·nH2O: phase evolution, and photoluminescence'
  title_type: original
  lang: en

## Description

- description: "Three kinds of important red phosphors, the monoclinic Ln2O2SO4 (Ln=Gd,
    Eu), cubic Ln2O3 and hexagonal Ln2O2S were obtained through controlled calcination
    of single hydroxyl sulfate Ln2(OH)4SO4·nH2O (LLnHs) precursor. The conditions
    of the hydrothermal synthesis of LGdHs were investigated, and it was found that
    LGdHs can be obtained in pH range of 7-9. The micro-morphology changes from aggregated
    spheres to micro plates with increasing pH. Gd2(OH)4SO4·nH2O was transformed into
    Gd2O2SO4 via removal of hydration water (up to 340 oC) and dehydroxylation (340-800
    oC), and finally change into Gd2O3 via desulfuration (800-1230 oC) in the air.
    Gd2O2S was obtained from Gd2(OH)4SO4·nH2O by calcination in reducing atmosphere
    (800-1200 oC). Photoluminescence excitation (PLE) studies showed broad and strong
    O-Eu CT bands at 260, 275, and 267 nm in Ln2O3, Ln2O2SO4 and Ln2O2S, respectively,
    and extra S-Eu CT band locates at 334 nm was observed in Ln2O2S. The strongest
    red emission corresponding to the electric dipole 5D0→7F2 transitions of the Eu3+
    ions were observed at 613, 618, and 626 nm in Ln2O3, Ln2O2SO4 and Ln2O2S system,
    respectively. The quenching concentration of Ln2O2S (3%) is smaller than those
    of Ln2O2SO4 (6%) and Ln2O3 (6%), which is due to the fact that the average Eu3+-Eu3+
    distance is smaller in Ln2O2S. The quenching mechanism was investigated, and it
    was found that the observed luminescence quenching was dominated by exchange interactions
    among Eu3+\r\nions."
  description_type: abstract
  lang: eng

## Creator

- name: Bowen Wang
  role: author
- name: Changshuai Gong
  role: author
- name: Jiantong Wang
  role: author
- name: Xuejiao Wang
  role: author
- name: Ji-Guang Li
  role: author
  orcid: https://orcid.org/0000-0002-5625-7361
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Photoluminescence
  schema: not_defined
- subject: Oxysulfate
  schema: not_defined
- subject: " Oxysulfide"
  schema: not_defined
- subject: Oxide
  schema: not_defined
- subject: " Hydroxyl sulfate"
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2023-11-08
end_date: 2025-11-08

## Journal

- title: ADVANCED POWDER TECHNOLOGY
  issn: '09218831'
  volume: '34'
  issue: '12'
  start_page: 104271
  end_page: 104271

## 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: a66df636-0b38-4401-9fd3-b49a05493b5d
  filename: APT_three phosphors from LRH.pdf
  content_type: application/pdf
  size: 1961326
  md5: d349e79097304357e47a640990ac918c

## Thumbnail

fileset_id: a66df636-0b38-4401-9fd3-b49a05493b5d
filename: APT_three phosphors from LRH.pdf