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Modeling the Structure of an Oxide Solar Cell

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Abstract

The article discusses numerical simulation of an oxide solar cell based on a Cu2O/TiO2 p–n heterojunction that was carried out to optimize its structure and increase the efficiency of energy conversion. The influence of layer thicknesses, concentrations of acceptors and donors in Cu2O and TiO2 layers, as well as the work function of the back contact material on the photoelectric parameters of the solar cell is studied. It was found that the optimal thickness of Cu2O and TiO2 layers is 1.5 µm and 100 nm, respectively. It is shown that to obtain a high efficiency of a solar cell, the concentration of acceptors in the Cu2O layer should be 1016 cm–3, and the concentration of donors in the TiO2 layer should be 1019 cm–3. It has been found that the work function of the back contact material must be at least 4.9–5 eV in order to achieve high efficiency values. The most suitable contact materials for Cu2O are Ni, C and Cu. For a solar cell based on a Cu2O/TiO2 p–n heterojunction, a maximum efficiency of 10.21% was obtained (short circuit current density 9.89 mA/cm2, open circuit voltage 1.38 V, fill factor 74.81%). The results can be used in the development and formation of heterostructures of inexpensive oxide solar cells.

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Funding

The work was supported by the Russian Foundation for Basic Research, project no. 19-29-03041 mk, as well as by the Government of the Russian Federation, Agreement no. 075-15-2022-1123.

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Authors and Affiliations

  1. Institute of Nanotechnologies, Electronics, and Equipment Engineering, Southern Federal University, 347922, Taganrog, Russia

    A. V. Saenko, V. S. Klimin, A. A. Rozhko & S. P. Malyukov

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  1. A. V. Saenko
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  2. V. S. Klimin
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  3. A. A. Rozhko
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  4. S. P. Malyukov
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Correspondence to A. V. Saenko, V. S. Klimin, A. A. Rozhko or S. P. Malyukov.

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Saenko, A.V., Klimin, V.S., Rozhko, A.A. et al. Modeling the Structure of an Oxide Solar Cell. J. Commun. Technol. Electron. 67 (Suppl 1), S108–S114 (2022). https://doi.org/10.1134/S1064226922130204

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  • DOI: https://doi.org/10.1134/S1064226922130204

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