Tunable Graphene-GaSe Dual Heterojunction Device

Wonjae Kim, Changfeng Li, Ferney A. Chaves, David Jiménez, Raul D. Rodriguez, Jannatul Susoma, Matthias A. Fenner, Harri Lipsanen, Juha Riikonen

Research output: Contribution to journalArticleResearchpeer-review

80 Citations (Scopus)


© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. A field-effect device based on dual graphene-GaSe heterojunctions is demonstrated. Monolayer graphene is used as electrodes on a GaSe channel to form two opposing Schottky diodes controllable by local top gates. The device exhibits strong rectification with tunable threshold voltage. Detailed theoretical modeling is used to explain the device operation and to distinguish the differences compared to a single diode.
Original languageEnglish
Pages (from-to)1845-1852
JournalAdvanced Materials
Publication statusPublished - 2 Mar 2016


  • GaSe
  • Schottky
  • graphene
  • heterojunctions
  • two-dimensional materials


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