کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5367482 | 1388366 | 2007 | 9 صفحه PDF | دانلود رایگان |
Diamond-like carbon films containing Ag and Cu in nanocrystalline form were deposited onto SnO2-coated glass substrates by electrochemical technique. Relative amount of silver and copper to be incorporated in the DLC matrix was tailored by varying the amount of silver and copper containing salts in the electrolyte. Current density was adjusted to obtain films with different crystallite size while the volume fraction of the metal nanocrystallites was altered by varying the dilution of the solution containing the salts. Raman studies indicated the presence of two peaks located at â¼1350Â cmâ1 (D-line) and 1566Â cmâ1 (G-line) for all the films and the relative intensities of these peaks changed with the amount of metal incorporation in it. The FTIR spectra were seen to be dominated by a peak at 975Â cmâ1 for C-H out of plane deformation modes along with peaks for C-H bending, C-H stretching and C-C stretching modes at 858, 1113 and 1189Â cmâ1, respectively. The optical absorption spectra showed a single plasmon band instead of two characteristic bands for Ag and Cu. We ascribe this to nanophase limited interfacial alloying at the Ag-Cu interface. The experimental observation was analyzed in the light of Mie theory.
Journal: Applied Surface Science - Volume 253, Issue 7, 30 January 2007, Pages 3649-3657