Lewis Edward A, Brent Jack R, Derby Brian, Haigh Sarah J, Lewis David J
School of Materials, University of Manchester, M13 9PL, UK.
Chem Commun (Camb). 2017 Jan 26;53(9):1445-1458. doi: 10.1039/c6cc09658a.
Phosphorene, or two-dimensional (2D) black phosphorus (BP) was the first synthetic 2D elemental allotrope beyond graphene to be isolated and studied. It is useful due to its high p-type carrier mobility and direct band gap that is tunable in the range ca. 0.3-2 eV thus bridging the energy gap between graphene and transition metal dichalcogenides such as molybdenum disulfide. Beyond the 'Scotch-Tape' method that was used to isolate the first samples of 2D BP for prototype studies, a range of potentially scalable solution processing techniques emerged later that can produce electronics grade material. This feature article focuses on such solution-process routes to 2D BP and highlights challenges in processing the material, mainly caused by its susceptibility to oxidation, as well as illuminating new avenues and opportunities in the area.
磷烯，即二维（2D）黑磷（BP），是继石墨烯之后首个被分离和研究的合成二维元素同素异形体。它因其高p型载流子迁移率和在约0.3 - 2电子伏特范围内可调的直接带隙而具有实用性，从而弥合了石墨烯与过渡金属二硫属化物（如二硫化钼）之间的能隙。除了用于分离首批二维BP样品以进行原型研究的“胶带”法之外，后来出现了一系列潜在可扩展的溶液处理技术，这些技术能够生产电子级材料。这篇专题文章重点介绍了制备二维BP的此类溶液处理路线，并突出了在处理该材料时面临的挑战，主要是由其易氧化特性导致的，同时还阐述了该领域的新途径和机遇。
