Influence of Polymer Decomposition Temperature on the Formation of Rare-Earth Free Boron Carbon Oxynitride Phosphors

Access this Article

Author(s)

    • Ogi Takashi
    • Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University
    • Wang Wei-Ning
    • Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis
    • Okuyama Kikuo
    • Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University

Abstract

In this study, the effect of polymer decomposition temperature on the preparation of boron carbon oxynitride (BCNO) phosphors is investigated with the aim of obtaining materials with enhanced photoluminescence properties. Three types of polymers, including polyethyleneimine (PEI), polyallylamine (PAA), and tetraethylene glycol (TEG) are used as carbon sources for the formation of BCNO phosphors. PEI is found to have the highest internal quantum efficiency (IQE) of the three polymers because of its optimum thermal decomposition temperature and high exothermic energy during BCNO formation. The IQE of the BCNO phosphors prepared with PEI is 50%, representing a 130% increase over the value observed when TEG was used as the carbon source. In addition, the emission band of the BCNO phosphors can be tuned from 380 to 490 nm by varying the reaction temperature and polymer concentrations.

Journal

  • JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 45(12), 995-1000, 2012

    The Society of Chemical Engineers, Japan

Codes

  • NII Article ID (NAID)
    130001859693
  • Text Lang
    ENG
  • ISSN
    0021-9592
  • Data Source
    J-STAGE 
Page Top