Abstract
The results on the low-frequency photo-conductivity of the thin randomly inhomogeneous WO<sub>3</sub> layers are presented. The layers were formed using deposition of water-suspended WO<sub>3</sub> micro-particles onto the glass substrates with flat interdigital electrode systems. The wavelength-dependent photo-conductivity was analyzed in the spectral interval covering the edge of the fundamental absorption band (from 440 nm to 520 nm). The estimated Urbach energy of the examined system occurred equal to ≈ 0.13 eV at 308 K.
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