Search
Description
Phosphors with a rigid and symmetrical structure are urgently needed. The alkali lithosilicate family (A[Li3SiO4]) has been extensively studied with a narrow emission band due to its unique cuboid-coordinated environment and rigid structure. However, here we demonstrate for the first time Ce-doped NaK2Li[Li3SiO4]4 phosphors with a broad emission band, a high internal quantum efficiency (85.6%), and excellent thermal stability. Photoluminescence indicates the Ce’s preference to occupy the Na+ site, leading to a strong blue color emission with peak maxima at 417 and 450 nm. Temperature- and pressuredependent photoluminescence reveals thermal stability and a phase transition. Moreover, the X-ray absorption near-edge structure reveals the mixing of Ce3+ and Ce4+ in the materials; this result differs from that of Eu2+-doped A[Li3SiO4] phosphors. The charge compensation process is then proposed to explain this difference. This study not only provides insights into Ce-doped UCr4C4-type phosphors but also explains the charge compensation mechanism of the aliovalent doping process.
In that dataset, the scientific article with Supporting Information, raw data of excitation and emission spectra, temperature-dependent, and high-pressure dependent photoluminescence and decay profiles, are provided.
Dataset file
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} where a single part of the file is 512 MB in size.Example script for calculation:
https://github.com/antespi/s3md5
File details
- License:
-
open in new tab
CC BYAttribution - Raw data:
- Data contained in dataset was not processed.
- Software:
- HPD-TA, OriginLab
Details
- Year of publication:
- 2020
- Verification date:
- 2022-03-04
- Dataset language:
- English
- Fields of science:
-
- physical sciences (Natural sciences)
- DOI:
- DOI ID 10.34808/ah2r-hy73 open in new tab
- Verified by:
- No verification
Keywords
Cite as
Authors
seen 124 times