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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 11
BKCSDE 33(11)
November 20, 2012

Title	Influence of SiO₂ Capping and Annealing on the Luminescence Properties of Larva-Like GaS Nanostructures
Author	Hyunsu Kim, Changhyun Jin, Sunghoon Park, Chongmu Lee*
Keywords	Nanostructures, GaS, SiO₂, Core-shell structure, Photoluminescence
Abstract	Larva-like GaS nanostructures synthesized by the thermal evaporation of Ga metals and S powders were coated with SiO2 by the sputtering technique. Transmission electron microscopy and X-ray diffraction analyses revealed that the cores and shells of the GaS-core/SiO2-shell larva-like nanostructures were single crystal wurtzite-type hexagonal structured-GaS and amorphous SiO2, respectively. Photoluminescence (PL) measurements at room temperature showed that the passivation of the larva-like GaS nanostructures was successfully achieved with SiO2 without nearly harming the major emission from the wires. However, subsequent thermal annealing treatment was found to be undesirable owing to the degradation of their emission in intensity.
Page	3576 - 3580
Full Text	PDF

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