• 文献标题:   A macroscopic model for vertical graphene-organic semiconductor heterojunction field-effect transistors
  • 文献类型:   Article
  • 作  者:   KIM CH, HLAING H, KYMISSIS I
  • 作者关键词:   fieldeffect transistor, vertical heterostructure, grapheneorganic junction, equivalent circuit, device model
  • 出版物名称:   ORGANIC ELECTRONICS
  • ISSN:   1566-1199 EI 1878-5530
  • 通讯作者地址:   Gwangju Inst Sci Technol
  • 被引频次:   11
  • DOI:   10.1016/j.orgel.2016.05.031
  • 出版年:   2016

▎ 摘  要

Field-effect transistors based on a graphene-organic semiconductor vertical hybrid hold great promise for applications that require a minimal driving voltage, a high current density, and a large trans-conductance gain. Despite impressive performances reported up to date, their working principles are still not well understood, and therefore a widely applicable functional model is now deemed essential. Here, we report on a physical current-voltage model based on the macroscopic footprints of charge transport and injection associated with the energetic asymmetry within the active diode part of a transistor. The model is composed of separate descriptions of negative and positive drain-biased circuits, which are added to build a single set of equations valid for a broad sweep range. The proposed model is validated by simulating a high-performance fullerene-based device, of which the extracted physical parameters are discussed in detail. (C) 2016 Elsevier B.V. All rights reserved.