The syntheses of MGa2S4 (where M=Ca, Sr, and Zn), CuMS2 (where M=In or Cr), Ba2ZnS3, and CuInSe2 by utilizing sulfur or selenium solutions in hydrazine monohydrate are reported. Scanning electron microscope studies of the morphology of the resulting materials prepared by this route are presented. The photoluminescence spectra of the phosphors SrGa2S4:Eu. SrGa2S4:Ce, ZnGa2S4:Mn, CaGa2S4:Eu, and Ba2ZnS3:Mn are displayed.
The method is more environmentally friendly than traditional preparations (very little sulfur-based gases are formed). Additionally, it is a simple and rapid preparation, producing a good yield. The procedure facilitates the formation of ternary metal sulfides or selenides. It is further shown that for optimum performance of SrGa2S4:Eu, the phosphor needs to be fired in a reducing atmosphere to convert all of the Eu3+ to Eu2+.
© 2001 The Electrochemical Society.
Marsh, P.J., Davies, D.A., Silver, J., Smith, D.W., Withnall, R. and Vecht, A., 2001. A Method for the Clean Syntheses of Sulfides/Selenides II. Ternary Sulfides/Selenides. Journal of The Electrochemical Society, 148(7), pp.D89-D93.
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