Spectral properties of silver–copper phthalocyanine (CuPc) nanocomposites prepared by thermal vacuum evaporation were studied. The samples differed from each other in the number of silver nanolayers and the thickness of intervening CuPc films. A long-wavelength shift of the surface plasmon resonance absorption band maximum and enhancement of the optical density per unit thickness of these films were observed as the thickness of the CuPc films decreased from 20 to 10 nm. This effect could be explained by the fact that the local field was stronger throughout practically the whole thickness of the thinner CuPc films due to contributions of both granular Ag nanolayers neighboring the CuPc film.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 79, No. 6, pp. 913–918, November–December, 2012.
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Zamkovets, A.D., Ponyavina, A.N. Near-field effects on spectral properties of layered silver–copper phthalocyanine nanocomposites. J Appl Spectrosc 79, 908–913 (2013). https://doi.org/10.1007/s10812-013-9693-8
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DOI: https://doi.org/10.1007/s10812-013-9693-8