Journal
NANOTECHNOLOGY
Volume 29, Issue 45, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aadc83
Keywords
nanodiscs; europium-doped yttrium oxide; luminescence; small angle x-ray scattering; transmission electron microscopy; Raman spectroscopy; concentration quenching
Funding
- EPSRC [TP11/MFE/6/1/AA129F, EP-SRC TS/G000271/1, TS/1003053/1, EP/N508974/1]
- Technology Strategy Board (TSB) [TP11/MFE/6/1/AA129F, EP-SRC TS/G000271/1, TS/1003053/1, EP/N508974/1]
- TSB
- National Science Foundation (NSF) [CHE-1402298]
- US Department of Energy, Office of Basic Energy Sciences [DE-SC0012704]
- US Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0012704]
- NIEHS [P42 ES007373, P01 ES022832]
- EPA [RD83544201]
- EPSRC [EP/L504671/1, TS/G000271/1, EP/J50015X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [TS/G000271/1, EP/J50015X/1, EP/N508974/1, EP/L504671/1] Funding Source: researchfish
Ask authors/readers for more resources
Here, we report the synthesis and spectral properties of ultrathin nanodiscs (NDs) of Y2O3:Eu3+. It was found that the NDs of Y2O3:Eu3+ with a thickness of about 1 nm can be fabricated in a reproducible, facile and self-assembling process, which does not depend on the Eu3+ concentration. The thickness and morphology of these NDs were determined with small angle x-ray scattering and transmission electron microscopy. We found that the crystal field in these nanoparticles deviates from both the cubic and monoclinic characteristics, albeit the shape of the D-5(0)-> F-7(J) (J = 0, 1, 2) transitions shows some similarity with the transitions in the monoclinic material. The Raman spectra of the non-annealed NDs manifest various vibration modes of the oleic acid molecules, which are used to stabilise the NDs. The annealed NDs show two very weak Raman lines, which may be assigned to vibrational modes of Y2O3 NDs. The concentration quenching of the Eu3+ luminescence of the NDs before annealing is largely suppressed and might be explained in terms of a reduction of the phonon density of states.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available