We synthesize and study the structural and optical properties of nanocrystalline graphene monofluoride and graphite monofluoride, which are carbon-based wide bandgap materials. Using laser excitations 2.41 - 5.08 eV, we identify six emission modes of graphite monofluoride, spanning the visible spectrum from red to violet. The energy and linewidth of the modes point to defect-induced midgap states as the source of the photoemission. We discuss possible candidates. Our findings open the window to electro-optical applications of graphene fluoride.
@article{arxiv.1007.5222,
title = {Photoluminescence from nanocrystalline graphite monofluoride},
author = {Bei Wang and Justin R. Sparks and Humberto R. Gutierrez and Fujio Okino and Qingzhen Hao and Youjian Tang and Vincent H. Crespi and Jorge O. Sofo and Jun Zhu},
journal= {arXiv preprint arXiv:1007.5222},
year = {2010}
}
Comments
11 pages including supporting information, 2 figures