Skip to main content
The 1280 Cm−1 Absorption Line in Amorphous Hydrogenated Boron Carbide
MRS Proceedings (1998)
  • Shu-Han Lin, University of Missouri–St. Louis
  • Bernard J. Feldman, University of Missouri–St. Louis
We report infrared absorption measurements that provide evidence for the presence of boron carbide icosahedra in amorphous hydrogenated boron carbide thin films. The infrared absorption spectra is dominated by an intense line at 1280 cm-1 with a FWHM of ≃320 cm-1. Similar lines have been previously reported in polycrystalline boron carbide, where boron carbide icosahedra make up the unit cell. In both systems, the linewidth narrows and the peak position shifts to higher energy with increasing carbon concentrations. From annealing studies of amorphous hydrogenated boron carbide, hydrogen plays a very small role in the 1280 cm-1 line. Finally, the integrated intensity of the 1280 cm-1 line is a sublinear function of the boron concentration, providing further evidence that the carbon concentration in these icosahedra increases as the carbon concentration of the film increases.
Publication Date
January 1, 1998
Citation Information
Shu-Han Lin and Bernard J. Feldman. "The 1280 Cm−1 Absorption Line in Amorphous Hydrogenated Boron Carbide" MRS Proceedings Vol. 517 (1998) p. 433
Available at: