@inproceedings{b8d4d6a547524003b948340307e006c1,
title = "Raman spectroscopy study of low energy He+ ion irradiation effect in graphene transferred onto SiO2",
abstract = "We studied the low energy (5.4 keV) He+ ion irradiation effect on the properties of chemical vapor deposited graphene transferred onto SiO 2/Si substrate. For a small dose density of 4 × 1012 He +/cm2, both the G and 2D bands in the Raman spectra exhibit blue-shift and the intensity ratio of the 2D and G peaks decreases. The intensity ratio of the D and G peaks increases a lot as the dose density is larger than 1.2 × 1013 He+/cm2. It suggests that before the formation of large amount of defects, low energy He+ ion irradiation may induce charge-transfer doping in graphene due to the presence of polymer residues. Broad spatial distributions of the band shift and the intensity ratio indicate inhomogeneity of doping level in graphene.",
author = "Chenxing Deng and Weiwei Lin and Sylvain Eimer and Dafine Ravelosona and Claude Chappert and Weisheng Zhao",
year = "2013",
doi = "10.1109/NANO.2013.6720857",
language = "英语",
isbn = "9781479906758",
series = "Proceedings of the IEEE Conference on Nanotechnology",
pages = "903--906",
booktitle = "2013 13th IEEE International Conference on Nanotechnology, IEEE-NANO 2013",
note = "2013 13th IEEE International Conference on Nanotechnology, IEEE-NANO 2013 ; Conference date: 05-08-2013 Through 08-08-2013",
}