Investigation of the combination of ITO/CdS/CdTe/Cu/Au solar cells in microassembly for electrical supply of field cables

Yeremenko

Kamyshentsev

et al. 2021

EEJET

The study of methods for obtaining base layers of cadmium telluride for the creation of efficient solar cells on a flexible substrate, intended for backup power supply of security systems and facility control. Considering that the polyamide film is stable up to a temperature of 450 °С, the formation of the base layers of solar cells based on cadmium telluride on flexible polyamide substrates was carried out by the method of DC magnetron sputtering. Using the chosen method, experimental samples of micromodules on a flexible substrate with series-connected solar cells based on CdS/CdTe/Cu/Au were obtained. To understand the effect of the failure of one or more solar cells on the efficiency of the entire micromodule during operation, an analysis of the initial parameters and light diode characteristics of individual solar cells of micromodules was carried out. The design of the micromodules, in which the solar cells were connected in series, made it possible to separately measure their output parameters. It was found that the creation of a Cu/Au rear tunnel contact made it possible to obtain high values of the output parameters for individual solar cells, but the micromodule contains a limitation by a shunted solar cell. However, the greatest role in reducing the efficiency of the entire micromodule is played by ineffective absorption of radiation when passing through the polyamide film, which led to a decrease in the efficiency of the entire micromodule, in which there is a shunted element, to 3.9 %. The maximum efficiency of the obtained samples of micromodules was 5.3 %

Section: The Study Of Methods For Obtaining Base Layers Of Cadmium Tementioning

confidence: 99%

Development of a method for obtaining a CdS/CdTe/Cu/Au module on a flexible substrate designed for backup supplying systems prevention of emergency situations

Yeremenko

Kamyshentsev

et al. 2021

EEJET

“…For pressing the targets of ITO, containing 95 % by weight of indium oxide and 5 % by weight of tin oxide, a special press was made. It should be noted that magnetron spraying is an effective method of obtaining all transparent electrodes [15,16]. This is due to the high degree of accuracy of transferring the target's composition to the substrate, the reproducibility and manageability of the magnetron spraying process [17].…”

Section: Materials For Building and Methods For Studying The Ito/cds/...mentioning

confidence: 99%

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

Burmenko

Hrebtsova³

et al. 2020

EEJET

Self Cite

“…The studied instrument structures ITO/CdS/CdTe/Cu/ITO were obtained by thermal evaporation using a UVN67 vacuum unit with modified internal equipment, the design of the units is given in [9]. Formed samples of ITO/CdS/CdTe were subjected to "chloride" treatment [10]. To carry out the "salt" treatment procedure, CdCl 2 films were deposited on the CdTe surface without heating the substrate by thermal evaporation at a pressure of 10 -5 mm.…”

Section: Materials For the Creation And Methods Of Investigation Of Fmentioning

confidence: 99%

Investigation of Photoelectric Converters With a Base Cadmium Telluride Layer With a Decrease in Its Thickness for Tandem and Two-Sided Sensitive Instrument Structures

EUREKA: Physics and Engineering

Kryvulkin

Matiushenko

et al. 2019

Self Cite

Photovoltaic cells with a base layer of cadmium telluride with a decrease in its thickness are studied. It is known that the widespread use of photovoltaic converters is constrained by their high price in the case of highly efficient instrument structures, or low efficiency. The creation of tandem and two-sided sensitive photoelectric converters will reduce their cost while increasing their efficiency. However, to create tandem and two-sided sensitive photoelectric converters, the necessary conditions are the use of transparent contacts and a decrease in the thickness of the base layer for efficient absorption of incident radiation by the converter, which is lower. In the research process, it was found that reducing the thickness of the base layer to 1 μm allows to increase the efficiency of the photoelectric transducer during irradiation from the back. An increase in the efficiency of the photoelectric converter occurs due to a decrease in the distance from the generation region of nonequilibrium charge carriers in the region of separation. If the thickness of the base layer is less than 1 μm, then regardless of which side of the irradiation is carried out, a decrease in the efficiency of the instrument structure is observed. Increase in the efficiency of photoconverters is associated with an increase in the negative influence of recombination processes on the back contact, a decrease in the number of charge carriers generated due to incomplete absorption of incident radiation, and a decrease in the volume of the built-in field of the separating barrier when it overlaps with the depletion region of the back contact. ITO/CdS/CdTe/Cu/ITO SCs with a base layer thickness of 1 μm demonstrates degradation stability. The highest value of efficiency in the case of illumination from the front side 8.1 % and with illumination from the back side 3.8 % received after a year of operation of the photovoltaic converter.