Fullerene C(60)-Silver Nanoparticles Hybrid Structures: Optical and Photoelectric Characterization
Por:
Dmitruk N.L., Borkovskaya, OY, Mamykin S.V., Naumenko D.O., Berezovska N.I., Dmitruk I.M., Meza-Laguna V., Alvarez-Zauco E., Basiuk E.V.
Publicada:
1 nov 2008
Resumen:
A detailed optical and photoelectric characterization of pristine fullerene C(60) films deposited onto n-silicon substrates (C(60)/Si), C, films crosslinked by means of the solvent-free chemical functionalization with 1,8-diaminooctane (C(60)-DA/Si), and the pristine and crosslinked films decorated with silver nanoparticles (C(60)-Ag/Si and C(60)-DA-Ag/Si), was carried out. The reflectance spectra obtained allowed to calculate the absorption coefficient (alpha = 4 pi k/lambda) spectral dependencies and the spectra of light transmittance in layered barrier structures metal(Au)/fullerene/Si. Photoelectric properties of the films were investigated as well. The experimentally measured values of band gap were in a good agreement with mobility gap values (2.3 +/- 0.1 eV). The decoration of fullerene films (both pristine and chemically crosslinked) with silver nanoparticles did not change the photocurrent spectra as compared to those for undecorated fullerene films, but lowered the values of
Filiaciones:
Univ Nacl Autonoma Mexico, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Mexico City 04510, DF, Mexico
Institute for Physics of Semiconductors, National Academy of Sciences of Ukraine, 45 Nauki Prospect, Kyiv 03028, Ukraine
National Taras Shevchenko University of Kyiv, 2 Glushkova Prospect, Kyiv 03022, Ukraine
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