Black phosphorus field-effect transistors.

نویسندگان

  • Likai Li
  • Yijun Yu
  • Guo Jun Ye
  • Qingqin Ge
  • Xuedong Ou
  • Hua Wu
  • Donglai Feng
  • Xian Hui Chen
  • Yuanbo Zhang
چکیده

Two-dimensional crystals have emerged as a class of materials that may impact future electronic technologies. Experimentally identifying and characterizing new functional two-dimensional materials is challenging, but also potentially rewarding. Here, we fabricate field-effect transistors based on few-layer black phosphorus crystals with thickness down to a few nanometres. Reliable transistor performance is achieved at room temperature in samples thinner than 7.5 nm, with drain current modulation on the order of 10(5) and well-developed current saturation in the I-V characteristics. The charge-carrier mobility is found to be thickness-dependent, with the highest values up to ∼ 1,000 cm(2) V(-1) s(-1) obtained for a thickness of ∼ 10 nm. Our results demonstrate the potential of black phosphorus thin crystals as a new two-dimensional material for applications in nanoelectronic devices.

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عنوان ژورنال:
  • Nature nanotechnology

دوره 9 5  شماره 

صفحات  -

تاریخ انتشار 2014