2.2 Ceramic Groupings

Black Phosphorus Terahertz Photodetectors

“…[7] 2D TMDCs can be obtained from bulk crystals by employing the micromechanical exfoliation method, [4] like for the case of graphene, but they show a direct bandgap, ranging between ~0.4 eV and ~2.3 eV, which enables applications that well complement graphene capabilities. [8] In particular, 2D TMDCs are suitable for photovoltaic applications [9] and for devising robust ultra-thin-body field effect transistor (FET) architectures which can easily provide subthreshold swing of ~ 60 mV/dec and I on /I off ratio up to 10 8 . [10] Nonetheless, their relatively low mobility (≤ 200 cm 2 V -1 s -1 ) is a major constraint for high-frequency electronic applications.A good trade-off between graphene and TMDCs is represented by a novel class of atomically thin 2D elemental materials: silicene, [11] germanene [12] and phosphorene.…”