# Regulating the trap distribution of ZnGa2O4:Cr3+ by Li+ /Ga3+ doping  for upconversion-like trap energy transfer NIR persistent  luminescence

https://mdr.nims.go.jp/datasets/3c3c8e39-30c8-4d05-a8df-9cb85bb88ef4

## File

- [Manuscript-Xiahou-ICF.pdf](https://mdr.nims.go.jp/filesets/ddda48fb-ac02-4311-a5db-2be35d7c4256/download) ([Detail](https://mdr.nims.go.jp/filesets/ddda48fb-ac02-4311-a5db-2be35d7c4256.md))

## Id

3c3c8e39-30c8-4d05-a8df-9cb85bb88ef4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-11-14T04:36:06.672085Z

## Updated at

2024-03-19T03:30:28.234784Z

## Published at

2024-03-19T03:30:28.337453Z

## Doi

https://doi.org/10.48505/nims.4335

## First published url

https://doi.org/10.1039/d3qi00184a

## Date published

2023-03-16

## Recorded date published

2023-3-28

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Regulating the trap distribution of ZnGa2O4:Cr3+ by Li+ /Ga3+ doping  for
    upconversion-like trap energy transfer NIR persistent  luminescence
  title_type: original
  lang: en

## Description

- description: "ZnGa2O4:Cr3+ persistent luminescent phosphors (PLPs) have been widely
    applied in bioimaging and photonics due to their ultra-long near-infrared (NIR)
    afterglow. However, UV and visible excitation currently in use have shallow penetration
    depth or harmful effect on organism, which limits the long-term bioimaging. Therefore,
    developing NIR PLPs excited by NIR light is urgent for bioimaging. Here, Zn1-x(Li/Ga)xGa2O4:Cr3+
    (x=0-1) NIR PLPs were synthesized. All the newly introduced Ga3+ ions occupy the
    tetrahedral sites. However, with increasing Li+/Ga3+ content, Li+ ions firstly
    occupy the tetrahedral position, then partially enter octahedral sites, and completely
    occupy the octahedral sites at x=1. Incorporation of Li+\r\n/Ga3+ contributes
    to the weakened crystal field strength, which leads to a deeper trap depth and
    a wider \r\ntrap energy level. A complete replacement of Zn2+ by Li+/Ga3+ ions
    leads to the splitting of the trap energy level into two-divided ones, which reduces
    the electron transfer between deep/shallow traps and makes the deep trap energy
    level be near to the 2E energy level of Cr3+. Therefore, an enhanced NIR afterglow
    excited by the low\x02energy NIR light is found for the Li+ /Ga3+ doped sample.
    This work provides a new category for the NIR-absorptive-NIR-emissive PLPs and
    proposes a new application for long-term bioimaging."
  description_type: abstract
  lang: eng

## Creator

- name: Junqing Xiahou
  role: author
- name: Qi Zhu
  role: author
- name: Fan Li
  role: author
- name: Minghui Jin
  role: author
- name: Lin Zhu
  role: author
- name: Sai Huang
  role: author
- name: Tao Zhang
  role: author
- name: Xudong Sun
  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: Royal Society of Chemistry (RSC)

## Managing organization



## Keyword

- subject: Cr3+
  schema: not_defined
- subject: NIR luminescence
  schema: not_defined
- subject: Persistent luminescence
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2023-03-16
end_date: 2024-03-16

## Journal

- title: Inorganic Chemistry Frontiers
  issn: '20521553'
  volume: '10'
  issue: '7'
  start_page: 2174
  end_page: 2188

## Conference



## Related item



## Funding



## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Process for specimen treatment



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## Fileset

- id: ddda48fb-ac02-4311-a5db-2be35d7c4256
  filename: Manuscript-Xiahou-ICF.pdf
  content_type: application/pdf
  size: 2643545
  md5: 1ff524b3b0323b8f6316a51f5504cc00

## Thumbnail

fileset_id: ddda48fb-ac02-4311-a5db-2be35d7c4256
filename: Manuscript-Xiahou-ICF.pdf