Applied Surface Science, volume 415, pages 8-13

Multimodal luminescence properties of surface-treated ZnSe quantum dots by Eu

Publication typeJournal Article
Publication date2017-09-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor6.7
ISSN01694332
Surfaces, Coatings and Films
General Chemistry
General Physics and Astronomy
Condensed Matter Physics
Surfaces and Interfaces
Abstract
ZnSe:Eu quantum dots (QDs) were synthesized using the heating-up method by adding a Eu precursor in Zn and Se precursors. The optical property was investigated based on the change in the multimodal emission caused by increasing the amount of the Eu precursor. The emission wavelength of ZnSe QDs increased from 398 nm to 405 nm when the reaction was carried out for 30–300 s. The broad spectrum was attributed to the 4 F 6 5 D 1  →  4 F 7 transition when the Eu 2+ emission was increased from 450 to 550 nm. Eu 3+ shows characteristic red emission peaks at 579, 592, 615, 651, and 700 nm owing to the electronic transition of 5 D 0  →  7 F j (j = 0, 1, 2, 3, 4). The expected structure of the ZnSe:Eu QDs was verified by XRD, TEM, and XPS. Compared to the diffraction peaks of pristine ZnSe, the corresponding peaks for the ZnSe:Eu QDs are shifted, by about 0.43°, to larger angles, because the ionic radius of Eu 3+ (0.95 A) is larger than that of Zn 2+ (0.74 A). They also have Eu 2+ O and Eu 3+ O dangling bonds on the surface of Eu 3+ -doped ZnSe QDs, with an average size of about 3.15 nm. These semiconductor QDs with rare earth elements are promising candidates to fabricate light-converting materials.

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Park J. et al. Multimodal luminescence properties of surface-treated ZnSe quantum dots by Eu // Applied Surface Science. 2017. Vol. 415. pp. 8-13.
GOST all authors (up to 50) Copy
Park J., Jeong D., Lim K., Kim J., Kim W., Kim B. S. Multimodal luminescence properties of surface-treated ZnSe quantum dots by Eu // Applied Surface Science. 2017. Vol. 415. pp. 8-13.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.apsusc.2017.02.026
UR - https://doi.org/10.1016/j.apsusc.2017.02.026
TI - Multimodal luminescence properties of surface-treated ZnSe quantum dots by Eu
T2 - Applied Surface Science
AU - Park, Ji-Hong
AU - Jeong, Da-Woon
AU - Lim, Kyoung-Mook
AU - Kim, Jongryoul
AU - Kim, Woo-Byoung
AU - Kim, Bum Soo
PY - 2017
DA - 2017/09/01 00:00:00
PB - Elsevier
SP - 8-13
VL - 415
SN - 0169-4332
ER -
BibTex
Cite this
BibTex Copy
@article{2017_Park,
author = {Ji-Hong Park and Da-Woon Jeong and Kyoung-Mook Lim and Jongryoul Kim and Woo-Byoung Kim and Bum Soo Kim},
title = {Multimodal luminescence properties of surface-treated ZnSe quantum dots by Eu},
journal = {Applied Surface Science},
year = {2017},
volume = {415},
publisher = {Elsevier},
month = {sep},
url = {https://doi.org/10.1016/j.apsusc.2017.02.026},
pages = {8--13},
doi = {10.1016/j.apsusc.2017.02.026}
}
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