Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0026-2692(99)00017-8
Title: Effects of high energetic He+ ion irradiation on the structure of polymeric hydrogenated amorphous carbon
Authors: Zhang, Q.
Yoon, S.F.
Ahn, J.
Rusli
Yang, H.
Yang, C. 
Watt, F. 
Teo, E.J. 
Osipowice, T. 
Issue Date: Aug-1999
Source: Zhang, Q., Yoon, S.F., Ahn, J., Rusli, Yang, H., Yang, C., Watt, F., Teo, E.J., Osipowice, T. (1999-08). Effects of high energetic He+ ion irradiation on the structure of polymeric hydrogenated amorphous carbon. Microelectronics Journal 30 (8) : 801-805. ScholarBank@NUS Repository. https://doi.org/10.1016/S0026-2692(99)00017-8
Abstract: The effects of 2 MeV He+ ion irradiation on the structure of polymeric hydrogenated amorphous carbon films were studied. It was found that after the irradiation up to a dose of 1.0×1016 cm-2, the carbon network transforms from a polymer-like to a diamond-like structure, as evidenced using Raman spectroscopy. Correspondingly, the optical band gap shrinks from 3.0 to 2.0 eV and the refractive index increases from 1.5 to 1.7. The processes of dehydrogenation and carbon rebonding into hydrogen-free C(sp3) and C(sp2) clusters under the impact of the incident ions are suggested to account for the carbon structural transformation.
Source Title: Microelectronics Journal
URI: http://scholarbank.nus.edu.sg/handle/10635/96362
ISSN: 00262692
DOI: 10.1016/S0026-2692(99)00017-8
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