Photoconductance of quasi-2D random layers of anatase nanoparticles near the edge of the fundamental absorption band

S. S. Volchkov; L. A. Kochkurov; E. V. Ushakova; D. A. Zimnyakov

doi:10.1117/12.2564335

9 April 2020 Photoconductance of quasi-2D random layers of anatase nanoparticles near the edge of the fundamental absorption band

S. S. Volchkov, L. A. Kochkurov, E. V. Ushakova, D. A. Zimnyakov

Author Affiliations +

Proceedings Volume 11458, Saratov Fall Meeting 2019: Laser Physics, Photonic Technologies, and Molecular Modeling; 1145812 (2020) https://doi.org/10.1117/12.2564335
Event: Saratov Fall Meeting 2019: VII International Symposium on Optics and Biophotonics, 2019, Saratov, Russian Federation

Abstract

The DC conductivity of thin random layers of anatase nanospheroids deposited onto the insulating substrates with interdigital electrode systems was experimentally studied using pulse-periodic laser irradiation near the edge of the fundamental absorption band of anatase. Evaluation of the conductivity slew rate at the beginning of laser irradiation depending on the laser wavelength was used for estimation of the Urbach energy of the examined system at various temperatures. Obtained results are compared with the previously reported data relating the Urbach energy of the densely packed ensembles of anatase nanotubes at room temperature.

Citation Download Citation

S. S. Volchkov, L. A. Kochkurov, E. V. Ushakova, and D. A. Zimnyakov "Photoconductance of quasi-2D random layers of anatase nanoparticles near the edge of the fundamental absorption band", Proc. SPIE 11458, Saratov Fall Meeting 2019: Laser Physics, Photonic Technologies, and Molecular Modeling, 1145812 (9 April 2020); https://doi.org/10.1117/12.2564335

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