• 文献标题:   Graphene-Ferroelectric Hybrid Structure for Flexible Transparent Electrodes
  • 文献类型:   Article
  • 作  者:   NI GX, ZHENG Y, BAE S, TAN CY, KAHYA O, WU J, HONG BH, YAO K, OZYILMAZ B
  • 作者关键词:   cvd graphene, ferroelectric polymer gating, sheet resistance, high transparency, mechanical flexibility, charged impurity scattering
  • 出版物名称:   ACS NANO
  • ISSN:   1936-0851 EI 1936-086X
  • 通讯作者地址:   Sungkyunkwan Univ
  • 被引频次:   124
  • DOI:   10.1021/nn3010137
  • 出版年:   2012

▎ 摘  要

Graphene has exceptional optical, mechanical, and electrical properties, making it an emerging material for novel optoelectronics, photonics, and flexible transparent electrode applications. However, the relatively high sheet resistance of graphene is a major constraint for many of these applications. Here we propose a new approach to achieve low sheet resistance in large-scale CVD monolayer graphene using nonvolatile ferroelectric polymer gating. In this hybrid structure, large-scale graphene is heavily doped up to 3 x 10(13) cm(-2) by nonvolatile ferroelectric dipoles, yielding a low sheet resistance of 120 Omega/square at ambient conditions. The graphene-ferroelectric transparent conductors (GFeTCs) exhibit more than 95% transmittance from the visible to the near-infrared range owing to the highly transparent nature of the ferroelectric polymer. Together with its excellent mechanical flexibility, chemical inertness, and the simple fabrication process of ferroelectric polymers, the proposed GFeTCs represent a new route toward large-scale graphene-based transparent electrodes and optoelectronics.