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http://dx.doi.org/10.4150/KPMI.2017.24.1.11

Synthesis and Properties of InP/ZnS core/shell Nanoparticles with One-pot process  

Joo, So Yeong (Advanced Materials & Processing Center, Institute for Advanced Engineering (IAE))
Hong, Myung Hwan (Advanced Materials & Processing Center, Institute for Advanced Engineering (IAE))
Kang, Leeseung (Advanced Materials & Processing Center, Institute for Advanced Engineering (IAE))
Kim, Tae Hyung (Advanced Materials & Processing Center, Institute for Advanced Engineering (IAE))
Lee, Chan Gi (Advanced Materials & Processing Center, Institute for Advanced Engineering (IAE))
Publication Information
Journal of Powder Materials / v.24, no.1, 2017 , pp. 11-16 More about this Journal
Abstract
In this study, simple chemical synthesis of green emitting Cd-free InP/ZnS QDs is accomplished by reacting In, P, Zn, and S precursors by one-pot process. The particle size and the optical properties were tailored, by controlling various experimental conditions, including [In]/[MA] (MA: myristic acid) mole ratio, reaction temperature and reaction time. The results of ultraviolet-visible spectroscopy (UV-vis), and of photoluminescence (PL), reveal that the exciton emission of InP was improved by surface coating, with a layer of ZnS. We report the correlation between each experimental condition and the luminescent properties of InP/ZnS core/shell QDs. Transmission electron microscopy (TEM), and X-ray powder diffraction (XRD) techniques were used to characterize the as-synthesized QDs. In contrast to core nanoparticles, InP/ZnS core/shell treated with surface coating shows a clear ultraviolet peak. Besides this work, we need to study what clearly determines the shell kinetic growth mechanism of InP/ZnS core shell QDs.
Keywords
Quantum dots; Nanoparticles; Cadmium-free; InP/ZnS; One-pot process;
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