Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 7, 1996
Previous Article Next Article

Amorphous and crystalline copper sulfides, CuS

Abstract

Copper sulfides CuS have been synthesized by a reaction between [Cu(en)2]2+(en = ethylenediamine) and thiourea in alkaline solutions at different temperatures. The product obtained at 10 °C (CuS-10) was amorphous and showed semiconductive properties with an electrical conductivity of 0.1 S cm–1 at 298 K and 3.6 × 10–3 S cm–1 at 108 K, whereas the product at 30°C (CuS-30) was a crystalline CuS (covellite) that exhibited a metal-like temperature dependence with a conductivity of 92 S cm –1 at 304 K and 101 S cm–1 at 101 K. CuS-10 was changed to a crystalline CuS when annealed at 100-150°C. The resulting CuS had a higher crystallinity than that of CuS-30, and the electrical conductivity showed a metal-like temperature dependence: 27 S cm–1 at 299 K and 31 S cm –1 at 98 K. When the reactions were conducted with an immersed polymer film in the solution, CuS films were formed on the substrate surface. The CuS-30 film and the annealed CuS-10 film were electroconductive and transparent in the visible spectral region. The synthesis of amorphous CuS followed by thermal treatment is a new method for the fabrication of metal sulfide films of high quality.

Back to tab navigation
Please wait while Download options loads

Article type: Paper
DOI: 10.1039/JM9960601157
Citation: J. Mater. Chem., 1996,6, 1157-1160
  •   Request permissions

    Amorphous and crystalline copper sulfides, CuS

    H. Grijalva, M. Inoue, S. Boggavarapu and P. Calvert, J. Mater. Chem., 1996, 6, 1157
    DOI: 10.1039/JM9960601157

Search articles by author