[13a-2Q-1~13] 6.4 Thin films and New materials

△ [13a-2Q-7] Clarification of the relation between the band-gap and the number of layer in the few-layer phosphorene

〇YUKI SUGIHARA¹, ATSUSHI OSHIYAMA¹ (1.Univ. of Tokyo)

Keywords:phosphorene,bandgap,first-principles calculation

The mono-layer black phosphorus, called phosphorene, has the significant band gap (~1.5 eV) while maintaining the high carrier mobility. It is known that the band gap of the multi-layer phosphorene depends on the number of layers but the mechanism has not been clear.
In this study, we clarify the inter-layer interaction occors the band gap narrowing of multi-layer phosphorene.