NDLI: Preparation and characterization of MgO nanorods sheathed with ZnS

Content Provider	Springer Nature Link
Author	Jin, Changhyun Kim, Hyunsu Lee, Chongmu Park, Sunghoon
Copyright Year	2012
Abstract	MgO nanorods have been grown on Si (100) substrates by using thermal evaporation of Mg$_{3}$N$_{2}$ powders with a Vapor-liquid-solid (VLS) mechanism. The as-synthesized MgO nanorods were 100 − 200 nm in diameter and 5 − 7 µm in length. MgO/ZnS core-shell nanorods were also prepared by using sputter deposition of ZnS onto the nanorods. Transmission electron microscopy and Xray diffraction analyses indicated that the MgO cores and the ZnS shells of the annealed coreshell nanorods were cubic-structured single crystals and amorphous material, respectively. The photoluminescence (PL) measurements of the core-shell nanorods showed a broad emission band centered at approximately 605 nm in the yellow-orange region. The PL emission intensity of the MgO nanorods increased with increasing ZnS shell layer thickness up to a shell layer thickness of 30 nm and then decreased with continued increases in the shell layer thickness. The yellow-orange emission intensity of the MgO/ZnS core-shell nanorods was found to be significantly increased by annealing in an oxidizing atmosphere. The PL emission intensity of the core-shell nanorods was increased further by annealing in a reducing atmosphere. The origin of the PL enhancement by annealing is discussed.
Starting Page	847
Ending Page	851
Page Count	5
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	61
Issue Number	6
e-ISSN	19768524
Language	English
Publisher	The Korean Physical Society
Publisher Date	2012-09-27
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Annealing Transmission electron microscopy Theoretical, Mathematical and Computational Physics Photoluminescence MgO-core/ZnS-shell nanorods Physics Particle and Nuclear Physics Thermal evaporation
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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