A simple and effective method for the self-assembling of thin films with directional ordering perpendicular to the substrate surface (see Figure) is reported. These films are grown on amorphous glass substrates and show second-order nonlinear optical effects of the order of 5 pm V–1. The ordering in these films can be maintained over large thicknesses (∼800 nm), and they are homogeneous over the area of the thin film.
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