Energy structure and fluorescence of Eu2+ in ZnS:Eu nanoparticles
(2000) In Physical Review B 61(16). p.11021-11024- Abstract
- Eu2+-doped ZnS nanoparticles with an average size of around 3 nm were prepared, and an emission band around 530 nm was observed. By heating in air at 150 degrees C, this emission decreased, while the typical sharp line emission of Eu3+ increased. This suggests that the emission around 530 nm is from intraion transition of Eu2+: In bulk ZnS:Eu2+, no intraion transition of Eu2+ was observed because the excited states of Eu2+ are degenerate with the continuum of the ZnS conduction band. We show that the band gap in ZnS:Eu2+ nanoparticles opens up due to quantum confinement, such that the conduction band of ZnS is higher than the first excited state of Eu2+, thus enabling the intraion transition of Eu2+ to occur.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/74d6f9a7-9c8a-4a6d-97d3-185066d9352f
- author
- Chen, Wei ; Malm, Jan-Olle LU ; Zwiller, Valéry LU ; Huang, Yining ; Liu, Shuman ; Wallenberg, Reine LU ; Bovin, Jan-Olov LU and Samuelson, Lars LU
- organization
- publishing date
- 2000-04-15
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B
- volume
- 61
- issue
- 16
- pages
- 4 pages
- publisher
- American Physical Society
- external identifiers
-
- scopus:0000693346
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.61.11021
- language
- English
- LU publication?
- yes
- id
- 74d6f9a7-9c8a-4a6d-97d3-185066d9352f
- date added to LUP
- 2023-10-31 16:21:07
- date last changed
- 2023-11-02 13:43:08
@article{74d6f9a7-9c8a-4a6d-97d3-185066d9352f, abstract = {{Eu2+-doped ZnS nanoparticles with an average size of around 3 nm were prepared, and an emission band around 530 nm was observed. By heating in air at 150 degrees C, this emission decreased, while the typical sharp line emission of Eu3+ increased. This suggests that the emission around 530 nm is from intraion transition of Eu2+: In bulk ZnS:Eu2+, no intraion transition of Eu2+ was observed because the excited states of Eu2+ are degenerate with the continuum of the ZnS conduction band. We show that the band gap in ZnS:Eu2+ nanoparticles opens up due to quantum confinement, such that the conduction band of ZnS is higher than the first excited state of Eu2+, thus enabling the intraion transition of Eu2+ to occur.}}, author = {{Chen, Wei and Malm, Jan-Olle and Zwiller, Valéry and Huang, Yining and Liu, Shuman and Wallenberg, Reine and Bovin, Jan-Olov and Samuelson, Lars}}, issn = {{1098-0121}}, language = {{eng}}, month = {{04}}, number = {{16}}, pages = {{11021--11024}}, publisher = {{American Physical Society}}, series = {{Physical Review B}}, title = {{Energy structure and fluorescence of Eu<sup>2+</sup> in ZnS:Eu nanoparticles}}, url = {{http://dx.doi.org/10.1103/PhysRevB.61.11021}}, doi = {{10.1103/PhysRevB.61.11021}}, volume = {{61}}, year = {{2000}}, }