Recent works have focused on a black phosphorus (black P) joined as a family of 2D materials, because of its tunable band gap depended on a thickness from 0.3eV in a bulk to more than 1.0eV in a few layers black P. Very recently, the successful fabrication of a single layer black P from the bulk has been reported. Additionally, unique properties of atomic layers of black P have been demonstrated such as high mobility, large on-off rations, and anisotropic properties and so on. With these results, the black P as a 2D material is extremely attractive in electronic and optoelectronic applications. However, there is a lack of characterization of the few layers black P and the reported properties are still in theory. Especially, the basic parameters concerned with the thermal stability are not determined, though the most thermodynamically stable phosphorus allotrope is the black P. Therefore, it is important to investigate the thermal phenomena of the black P in a various temperature condition within an atomic scale. In this study, we studied the reaction behavior of a single crystal black P under in situ heating conditions. In addition, the microstructure of black P at different temperatures was analyzed using high-resolution TEM (HRTEM).

ACKNOWLEDGMENTS

This work was supported by KBSI (Korea Basic Science Institute) grants to J.-G. Kim (T36210)

Figures:

Fig. 1. Experimentally obtained HRTEM image of the few layer black P at RT and the simulated HRTEM image (red color) of the [010] direction with the atomic model (inset)

« Back to The 16th European Microscopy Congress 2016

EMC Abstracts - https://emc-proceedings.com/abstract/observation-of-thermal-behavior-of-black-phosphorus-as-a-2d-material/