DOI: https://doi.org/10.15587/1729-4061.2020.206395

Investigating an alternative electricity supply system for preventing emergencies under conditions of limited capacity

Alexandr Burmenko, Natalya Deyneko, Irina Hrebtsova, Igor Kryvulkin, Olga Prokopenko, Roman Shevchenko, Olexandr Tarasenko

Abstract


Film solar cells have been investigated to meet the need for an alternative system of electricity supply during the elimination and prevention of an emergency when an electricity supply system is damaged. Given the high degradation resistance of cadmium telluride, the study has examined the two-way sensitive solar cells based on CdS/CdTe with a super-thin base layer suitable for forming tandem structures. Creating the tandem structures makes it possible to improve the efficiency by placing another photoconverter at the front surface. We have measured the light volt-ampere characteristics of ITO/CdS/CdTe/Cu/ITO solar cells with a base layer thickness of 1 µm when simultaneously lighting the rear and frontal sides. It has been experimentally shown that two-way lighting makes it possible to increase the electrical power generated by the device structure by 30 %.

The study of the spectral dependences of transmittance has shown that the device structures ITO/CdS/CdTe/Cu/ITO with a thickness of the base layer of 1 µm demonstrate, in the spectral range (0.82‒1.10) µm, average transmittance of 0.58. Examining the light volt-ampere characteristics of the solar cells Mo/CuInSe2/CdS/ZnO/ZnO:Al/Ni: Al/Ni has shown that placing, at its frontal surface, the solar element ITO/CdS/CdTe/Cu/ITO leads to a decrease in efficiency from 11.2 % to 6.0 %. Such a decrease is primarily due to a decrease in the short-circuit current density from 25.9 mA/cm2 to 13.8 mA/cm2. However, as the efficiency of the ITO/CdS/CdTe/Cu/ITO solar element is 7.8 %, the tested tandem photovoltaic converters ITO/CdS/CdTe/Cu/ITO – Mo/CuInSe2/CdS/ZnO/ZnO:Al/Ni demonstrated the efficiency 13.8 %

Keywords


cadmium telluride; photoelectric converters; tandem and double-sided sensitive instrument structures

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References


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Copyright (c) 2020 Alexandr Burmenko, Natalya Deyneko, Irina Hrebtsova, Igor Kryvulkin, Olga Prokopenko, Roman Shevchenko, Olexandr Tarasenko

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ISSN (print) 1729-3774, ISSN (on-line) 1729-4061