Impact of magnetite nanoparticle incorporation on optical and electrical properties of nanocomposite LbL assemblies

Alexey M. Yashchenok, Dmitry A. Gorin, Mikhail Badylevich, Alexey A. Serdobintsev, Matthieu Bedard, Yanina G. Fedorenko, Gennady B. Khomutov, Dmitri O. Grigoriev, Helmuth Möhwald

Результат исследований: Материалы для журналаСтатьярецензирование

25 Цитирования (Scopus)

Аннотация

Optical and electrical properties of polyelectrolyte/iron oxide nanocomposite planar films on silicon substrates were investigated for different amount of iron oxide nanoparticles incorporated in the films. The nanocomposite assemblies prepared by the layer-by-layer assembly technique were characterized by ellipsometry, atomic force microscopy, and secondary ion mass-spectrometry. Absorption spectra of the films reveal a shift of the optical absorption edge to higher energy when the number of deposited layers decreases. Capacitance-voltage and current-voltage measurements were applied to study the electrical properties of metal-oxide-semiconductor structures prepared by thermal evaporation of gold electrodes on nanocomposite films. The capacitance-voltage measurements show that the dielectric constant of the film increases with the number of deposited layers and the fixed charge and the trapped charge densities have a negative sign.

Язык оригиналаАнглийский
Страницы (с-по)10469-10475
Число страниц7
ЖурналPhysical Chemistry Chemical Physics
Том12
Номер выпуска35
DOI
СостояниеОпубликовано - 21 сен 2010
Опубликовано для внешнего пользованияДа

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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