Articles
  • Bio-inspired synthesis and optical properties of Dy3+-doped ZnS nanoparticles
  • Xiuying Tiana,b,*, Zhanjun Chena,b, Jin Wena,b,*, Yi Duc, Jilin Hua,b, Shumei Wanga,b, Hongxia Penga,b and Jing Lia,b and Yangxi Penga,*
  • a Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials, Hunan University of Humanities, Science and Technology, Loudi, 417000, P. R. China b School of Materials and Environmental Engineering, Hunan University of Humanities, Science and Technology, Loudi, 417000, P. R. China c Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass & Functional Ceramics, School of Materials Science and Engineering, Qilu university of technology, Jinan, 250353, P. R. China
Abstract
Dy3+-doped Zinc sulfide (ZnS) nanoparticles had been prepared via bio-inspired procedure and were characterized. All samples had cubic zinc blende structures. The typical sample had spherical structure with a diameter of ca. 68 nm. With increasing Dy3+-doped concentration, the bands attributed to C-O were shifted, due to the presence of Dy3+ ion in ZnS lattice site. The obtained bandgap were apparently lower than the reference value (~3.72 eV), beneficial for the photo-catalytic application. With increase of Dy3+-doped concentrations, enhanced photoluminescence (PL) of the sample at 1% was attributed to large number of sulfur vacancies. The broad band with blue-green emission at ~ 500 nm indicated a considerable number of zinc vacancies to impart green emission and 4F9/2-6H15/2 transitions of Dy3+ ions to impart blue emission.

Keywords: Semiconductors, Crystal growth, Optical properties, X-ray diffraction, Crystal structure.

This Article

  • 2017; 18(2): 116-121

    Published on Feb 28, 2017