Fabrication of a quantum well heterostructure based on plasma polymerized aniline and its characterization using STM/STS

T. N. Narayanan, Soumya Jose, Senoy Thomas, S. H. Al-Harthi, M. R. Anantharaman

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Two-dimensional electronic systems play a crucial role in modern electronics and offer a multitude of opportunities to study the fundamental phenomena at low dimensional physics. A quantum well heterostructure based on polyaniline (P) and iodine doped polyaniline (I) thin films were fabricated using radio frequency plasma polymerization on indium tin oxide coated glass plate. Scanning probe microscopy and scanning electron microscopy studies were employed to study the morphology and roughness of the polymer thin films. Local electronic density of states (LDOS) of the P-I-P heterostructures is probed using scanning tunnelling spectroscopy (STS). A step like LDOS is observed in the P-I-P heterostructure and is attributed to the quantum well confinement of electrons in the polymer heterostructure.

Original languageEnglish
Article number165309
JournalJournal of Physics D: Applied Physics
Issue number16
Publication statusPublished - 2009


ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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