• 文献标题:   Tunable nano Peltier cooling device from geometric effects using a single graphene nanoribbon
  • 文献类型:   Article
  • 作  者:   LI WJ, YAO DX, CARLSON EW
  • 作者关键词:   peltier cooling device, graphene nanoribbon, superlattice structure, graphene electronic, cooling power, nonequilibrium green s function negf
  • 出版物名称:   FRONTIERS OF PHYSICS
  • ISSN:   2095-0462
  • 通讯作者地址:   Sun Yat Sen Univ
  • 被引频次:   3
  • DOI:   10.1007/s11467-014-0415-3
  • 出版年:   2014

▎ 摘  要

Based on the phenomenon of curvature-induced doping in graphene we propose a class of Peltier cooling devices, produced by geometrical effects, without gating. We show how a graphene nanoribbon laid on an array of curved nano cylinders can be used to create a targeted and tunable cooling device. Using two different approaches, the Nonequilibrium Green's Function (NEGF) method and experimental inputs, we predict that the cooling power of such a device can approach the order of kW/cm(2), on par with the best known techniques using standard superlattice structures. The structure proposed here helps pave the way toward designing graphene electronics which use geometry rather than gating to control devices.