Abstract
Composites with photoelectrical, nonlinear optical, and photorefractive properties have been prepared. The composites consist of polyvinyl alcohol, single-wall carbon nanotubes, and fullerene C60. Addition of C60 with a long wavelength boundary near 630 nm resulted in an eight- to tenfold increase in both the quantum efficiency of generation of mobile hole charges and the photorefractive two beam gain coefficient measured at wavelengths exceeding 1000 nm (over an area of optical absorption of nanotubes). This is attributed to electron trapping by acceptor fullerene, which limits the regeneration of photogenerated charges and provides an increase in mobile hole charges.
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Original Russian Text © A.D. Grishina, T.V. Krivenko, V.V. Savel’ev, A.V. Vannikov, 2016, published in Fizikokhimiya Poverkhnosti i Zashchita Materialov, 2016, Vol. 52, No. 5, pp. 483–487.
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Grishina, A.D., Krivenko, T.V., Savel’ev, V.V. et al. Photorefractive properties of composites based on polyvinyl alcohol, single-wall carbon nanotubes, and fullerene. Prot Met Phys Chem Surf 52, 797–801 (2016). https://doi.org/10.1134/S2070205116050099
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DOI: https://doi.org/10.1134/S2070205116050099