Abstract
The optical properties of conjugated polymer/single-walled carbon nanotube composite films are studied as a function of the nanotube volume fraction. The optical constants and the dielectric functions of the polymer and nanotube films are calculated. The effective dielectric functions of the polymer-nanotube composite films as a function of the nanotube volume fraction are deduced using the Maxwell–Garnett (MG) effective-medium theory. The absorption spectra resulting from these, are compared with the measured spectra. The results demonstrate that the MG theory can adequately interpret the optical properties of the composite, indicating that an accurate tailoring of the composite optical properties can take place by varying the nanotube volume fraction.
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