Journal
JOURNAL OF CRYSTAL GROWTH
Volume 263, Issue 1-4, Pages 570-574Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2003.12.004
Keywords
crystal morphology; growth from solutions; hydrothermal crystal growth; inorganic compounds; sulfides; solar cells
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Novel copper sulfide (CuS) hollow spheres composed of nanoflakes were synthesized under hydrothermal conditions by treating copper (II)-thiourea complex from CuSO(4)(.)5H(2)O and thiourea at 180degreesC for 24h. When increasing the reaction temperature, much smaller hexagonal CuS nanoflakes generated from copper (II)-thiourea complex formed and self-assembled into hollow spheres. The products were characterized by means of X-ray powder diffraction scanning electron microscopy and field emission scanning electron microscopy. It is found that the reaction temperature and copper (II)-thiourea complex are of importance to form hollow spherical superstructures. A possible mechanism is also discussed. (C) 2004 Elsevier B.V. All rights reserved.
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