Open AccessStudy of the charge transfer process in the polyaniline/graphite heterojunction by conductive atomic force microscopy
Author(s) -
N. A. Davletkildeev
Publication year - 2020
Publication title -
omskij naučnyj vestnik
Language(s) - English
Resource type - Journals
eISSN - 2541-7541
pISSN - 1813-8225
DOI - 10.25206/1813-8225-2020-173-94-98
Subject(s) - polyaniline , conductive atomic force microscopy , materials science , highly oriented pyrolytic graphite , graphite , heterojunction , pyrolytic carbon , contact electrification , electrical conductor , conductive polymer , atomic force microscopy , optoelectronics , polymerization , chemical engineering , nanotechnology , composite material , polymer , triboelectric effect , pyrolysis , engineering
Thin layers of polyaniline on the surface of highly oriented pyrolytic graphite are obtained by in-situ chemical oxidative polymerization of aniline. The current-voltage characteristics of the tip/polyaniline/graphite contact, which have a form characteristic of tunnel contacts, have been measured by the method of conducting atomic force microscopy. By modeling the current-voltage characteristics using the Simmons model, the width of the potential barrier is determined, which for the investigated heterojunction is 0,5 nm