Optical and photoelectrical studies of gold nano particle-decorated C-60 films
Por:
Dmitruk N.L., Borkovskaya, OY, Mamykin S.V., Naumenko D.O., Meza-Laguna V., Basiuk (Golovataya-Dzhymbeeva) E.V., Lee I.P.
Publicada:
1 ene 2010
Resumen:
Optical and photoelectrical studies were performed on octane-1,8-dithiol cross-linked fullerene films, with supported gold nanoparticles (C-60-DT-Au). According to high-resolution transmission electron microscopy observations, the average size of obtained gold nanoparticles was about 5 turn, and the shape was spherical. The comparative investigation of optical properties of pristine and cross-linked with octane-1,8-dithiol C-60 films, decorated with gold nanoparticles, found the difference in the extinction coefficient spectra, which was observed also in the photocurrent spectra of barrier heterostructure Au/C-60/Si. The analysis of dark current-voltage characteristics for Au/C-60/Si heterostructures showed that the model for them includes the barrier at the C-60/Si interface and internal barriers in the C-60 layer, caused by the trapping centers. The hopping mechanism of the current transport in the C-60 layer was supplemented with the Poole-Frenkel emission process on these centers,
Filiaciones:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
Univ Nacl Autonoma Mexico, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Mexico City 04510, DF, Mexico
Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
Institute for Physics of Semiconductors, National Academy of Sciences of Ukraine, 45 Nauki Prospect, Kyiv, 03028, Ukraine
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