Efficient production of few-layer black phosphorus by liquid-phase exfoliation

Ghassane Tiouitchi, Mustapha Ait Ali, Abdelilah Benyoussef, Mohammed Hamedoun, Abdessadek Lachgar, Abdelkader Kara, Ahmed Ennaoui, Abdelfattah Mahmoud, Frederic Boschini, Hamid Oughaddou, Amine El Moutaouakil, Abdellah El Kenz & Omar Mounkachi
Phosphorene is a new 2D material that has recently attracted much attention owing to its fascinating electrical, optical, thermal, and chemical properties. Here, we report on high-quality exfoliation of black phosphorus nanosheets, with controllable size produced in large quantities by liquid phase exfoliation using N-methyl-2-pyrrolidone (NMP) as a solvent under ambient conditions. The as-synthesized few layers show a great potential for solar energy conversion based on the optical results shown in this work.
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