• 文献标题:   Electroluminescence from graphene excited by electron tunneling
  • 文献类型:   Article
  • 作  者:   BEAMS R, BHARADWAJ P, NOVOTNY L
  • 作者关键词:   graphene, electron tunneling, photoemission, electroluminescence, scanning tunneling microscopy
  • 出版物名称:   NANOTECHNOLOGY
  • ISSN:   0957-4484 EI 1361-6528
  • 通讯作者地址:   Univ Rochester
  • 被引频次:   17
  • DOI:   10.1088/0957-4484/25/5/055206
  • 出版年:   2014

▎ 摘  要

We use low-energy electron tunneling to excite electroluminescence in single layer graphene. Electrons are injected locally using a scanning tunneling microscope and the luminescence is analyzed using a wide-angle optical imaging system. The luminescence can be switched on and off by inverting the tip-sample bias voltage. The observed luminescence is explained in terms of a hot luminescence mechanism.