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Synthesis and Characterization of Magnetic-Luminescent Fe3O4-CdSe Core-Shell Nanocrystals

Authors
Liu, HonglingWu, JunhuaMin, Ji HyunLee, Ju HunKim, Young Keun
Issue Date
1월-2019
Publisher
KOREAN INST METALS MATERIALS
Keywords
Fe3O4; CdSe; Core-shell; Nanocrystal; Magnetism; Luminescence
Citation
ELECTRONIC MATERIALS LETTERS, v.15, no.1, pp.102 - 110
Indexed
SCIE
SCOPUS
KCI
Journal Title
ELECTRONIC MATERIALS LETTERS
Volume
15
Number
1
Start Page
102
End Page
110
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/68808
DOI
10.1007/s13391-018-0097-z
ISSN
1738-8090
Abstract
Nanostructures organized in unordinary spatial arrangements with multiple components such as core-shell configurations endow structures, material properties and functions that differ from the individual bulk components. In this study, we report the synthesis and characterization of bifunctional magnetic-luminescent Fe3O4-CdSe core-shell nanocrystals with core diameter and shell thickness of 10 and 2nm, respectively, by controlled sequential reactions. The nanocrystals exhibit well-defined superparamagnetic behavior with high susceptibility at RT. Moreover, the fluorescent measurements demonstrate two major kinds of emission peaks, one at 572nm originating from the bandgap excitons and the other at 680nm being surface-associated. These core-shell nanocrystals, coupling the optical sensing element with the magnetic actuator in a peculiar nanostructure are thereby prospected for fundamental study and various applications where multifunctionality is required. [GRAPHICS] .
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공과대학 (신소재공학부)
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