| 초록 |
Black phosphorus (BP), the most stable allotrope of phosphorus, is a material stacking individual atomic layers together through van der Walls interactions. In recent studies, the band gap of BP is tunable from 0.3eV for bulk BP to 2.0eV for phosphorene depending on the number of stacked layers. In this work, two-dimensional black phosphorus (phosphorene) dispersed in a solution is obtained by the solvent exfoliation. Among various solvents, N-methylpyrrolidone is found to provide stable, highly concentrated BP dispersions. In addition, black phosphorous thin films were also deposited on the substrates using ink-jet printing method. Physical properties of the films were systematically characterized by atomic force microscope (AFM), scanning electron microscopy (SEM) and Raman spectroscopy. In this study, the stable, highly concentrated, electronic-grade phosphorous thin films were successfully deposited by combining the solvent exfoliation with the ink-jet printing deposition method. |
