Effect of Eu3+, Bi3+, and Li+ doping on luminescent property of GdNbO4open access
- Authors
- Wi, S. W.; Lee, Y. S.
- Issue Date
- Jan-2024
- Publisher
- ELSEVIER
- Keywords
- Eu3+; GdNbO4; Codoping ofLi plus; Photoluminescence; Sensitizer; Rare earths
- Citation
- JOURNAL OF RARE EARTHS, v.42, no.1, pp 66 - 75
- Pages
- 10
- Journal Title
- JOURNAL OF RARE EARTHS
- Volume
- 42
- Number
- 1
- Start Page
- 66
- End Page
- 75
- URI
- https://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/49183
- DOI
- 10.1016/j.jre.2022.10.008
- ISSN
- 1002-0721
- Abstract
- We investigated the emission properties of Eu3+-doped GdNbO4-based oxide phosphors, aiming at improving the Eu3+ emission by codoping of Bi3+ and Li+. Eu3+ singly doped, Eu3+ and Bi3+ doubly doped, and Eu3+, Bi3+, and Li+ triply doped GdNbO4 were prepared using a high-temperature solid-state reaction method. The red-orange emissions from Eu3+ in the singly doped samples are significantly improved by the codoping of Bi3+, mainly due to the energy transfer from Bi3+ to Eu3+. The additional codoping of Li+ is found to increase the Eu3+ emission significantly. This improvement might be attributed to the increase in the photoluminescent quantum yield originating from larger grain sizes and better crystallinity. A detailed analysis of the X-ray diffraction pattern and the asymmetric ratio esti-mated from the photoluminescence spectra show that the local lattice environment around Eu3+ in GdNbO4 does not change significantly with the codoping of Bi3+ and Li+. Our results indicate that Li+ doping is a promising way to improve the emission properties of rare-earth ion-doped GdNbO4 phosphors.(c) 2022 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
- Files in This Item
-
Go to Link
- Appears in
Collections - Graduate School > Department of Physics > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/49183)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.