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The opportunities for the application of new quasi-one-dimensional organic semiconductors as sensitive elements in nonselective thermoelectric infrared detectors for the long wave length regime of the spectrum are analyzed. It is shown that under certain conditions the effective scattering probability for some carriers is considerably reduced due to the interference of two main electron-phonon interactions. As a result, a significant increase of the thermoelectric power factor, which is the most important parameter of the materials used for infrared detectors, is predicted. [ABSTRACT FROM AUTHOR]