Optical Properties of Water-Soluble Er-Doped ZnS Quantum Dots Synthesized by a Hydrothermal Process

Abstract:

Er3+:ZnS quantum dots(QDs) were synthesized by hydrothermal process. The structure, morphology and luminescence properties were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy. It was found that the Er3+:ZnS QDs are zinc blende structure with an average particle size of about 8 nm. In PL spectra, The broad peak of ZnS NCs located at 400nm was commonly assigned to sulfur vacancies. The intensity of exciting peak and emission peak at of Er3+:ZnS QDs decreased with doping concentration increasing.

• Periodical: Advanced Materials Research (Volume 800)
• Pages: 402-405
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.800.402
• Online since: September 2013
• Authors: Gang Li, Li Hua Li, Liu Shuan Yang, Jin Liang Huang
• Keywords: Er-Doped ZnS, Hydrothermal Process, Luminescence Property, Quantum Dot (QD)

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