Multilevel operation of resonant tunneling with binary molecules in a metal-insulator-semiconductor configuration

Hoon Seok Seo, Ryoma Hayakawa, Toyohiro Chikyow, Yutaka Wakayama

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We attained multilevel manipulation of resonant tunneling in a metal-insulator-semiconductor (MIS) structure, in which heterogeneous molecules of copper hexadecafluorophthalocyanine (F16CuPc) and copper phthalocyanine (CuPc) were embedded in an insulating layer to form a double-tunneling junction. Resonant tunneling was observed in samples with either molecule, revealing that the molecules worked as intermediate electrodes for the tunneling current. The carrier transport was ascribed to resonant tunneling through the energy levels of individual molecules. That is, the threshold voltage of resonant tunneling can be controlled according to the energy levels of the molecules. We achieved multilevel resonant tunneling operation with binary molecules of F16CuPc and CuPc, in which the carriers were injected into the respective molecules at corresponding threshold voltages. Our findings point to a new multilevel operation of resonant tunneling through organic molecules in a practical MIS device structure.

Original languageEnglish
Pages (from-to)6467-6472
Number of pages6
JournalJournal of Physical Chemistry C
Volume118
Issue number12
DOIs
Publication statusPublished - 2014 Mar 27
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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