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题名: Direct observation of the layer-dependent electronic structure in phosphorene
作者: Li, Likai;  Kim, Jonghwan;  Jin, Chenhao;  Ye, Guo Jun;  Qiu, Diana Y.;  da Jornada, Felipe H.;  Shi, Zhiwen;  Chen, Long;  Zhang, Zuocheng;  Yang, Fangyuan;  Watanabe, Kenji;  Taniguchi, Takashi;  Ren, Wencai;  Louie, Steven G.;  Chen, Xian Hui;  Zhang, Yuanbo;  Wang, Feng
发表日期: 2017
摘要: Phosphorene, a single atomic layer of black phosphorus, has recently emerged as a new two-dimensional (2D) material that holds promise for electronic and photonic technologies(1-5). Here we experimentally demonstrate that the electronic structure of few-layer phosphorene varies significantly with the number of layers, in good agreement with theoretical predictions. The interband optical transitions cover a wide, technologically important spectral range from the visible to the mid-infrared. In addition, we observe strong photoluminescence in few-layer phosphorene at energies that closely match the absorption edge, indicating that they are direct bandgap semiconductors. The strongly layer-dependent electronic structure of phosphorene, in combination with its high electrical mobility, gives it distinct advantages over other 2D materials in electronic and opto-electronic applications.
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Recommended Citation:
Li, Likai,Kim, Jonghwan,Jin, Chenhao,et al. Direct Observation Of The Layer-dependent Electronic Structure In Phosphorene[J]. Nature Nanotechnology,2017,12(1):21-25.

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