INVESTIGATION OF PHOTOELECTRIC CONVERTERS WITH A BASE CADMIUM TELLURIDE LAYER WITH A DECREASE IN ITS THICKNESS FOR TANDEM AND TWO-SIDED SENSITIVE INSTRUMENT STRUCTURES

Natalya Deyneko, Igor Kryvulkin, Mykola Matiushenko, Olexandr Tarasenko, Igor Khmyrov, Anastasiia Khmyrova, Roman Shevchenko

Abstract


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.


Keywords


cadmium telluride; photovoltaic converters; tandem and two-sided sensitive instrument structures

Full Text:

PDF

References


Khrypunov, G., Vambol, S., Deyneko, N., Sychikova, Y. (2016). Increasing the efficiency of film solar cells based on cadmium telluride. Eastern-European Journal of Enterprise Technologies, 6 (5 (84)), 12–18. doi: https://doi.org/10.15587/1729-4061.2016.85617

Deyneko, N., Kovalev, P., Semkiv, O., Khmyrov, I., Shevchenko, R. (2019). Development of a technique for restoring the efficiency of film ITO/CdS/CdTe/Cu/Au SCs after degradation. Eastern-European Journal of Enterprise Technologies, 1 (5 (97)), 6–12. doi: https://doi.org/10.15587/1729-4061.2019.156565

Lunin, L. S., Lunina, M. L., Pashchenko, A. S., Alfimova, D. L., Arustamyan, D. A., Kazakova, A. E. (2019). Cascade Solar Cells Based on GaP/Si/Ge Nanoheterostructures. Technical Physics Letters, 45 (3), 250–252. doi: https://doi.org/10.1134/s1063785019030313

Khrypunov, G. S., Sokol, E. I., Yakimenko, Yu. I., Meriuts, A. V., Ivashuk, A. V., Shelest, T. N. (2014). Conversion of solar energy by combination solar cells based on CdTe and CuInSe₂. Fizika i tehnika poluprovodnikov, 48 (12), 1671–1675.

De Vos, A., Parrott, J., Baruch, P., Landsberg, P. (1994). Вandgap effects in thin-film heterojunction solar cells. Proceeding 12th European Photovoltaic Solar Energy Conference. Amsterdam, 1315–1319.

Gordillo, G., Calderón, C., Bolaños, W., Romero, E. (2003). Optical and structural characterization of CuInSe2 (CIS) thin films grown by means of process in two stages. Superficies y Vacio, 16 (2), 12–15.

Khrypunov, G., Meriuts, A., Klochko, H., Shelest, T., Khrypunova, A. (2010). Investigation of Thin Film Solar Cells on CdS/CdTe Base with Different Back Contacts. Advances in Science and Technology, 74, 119–123. doi: https://doi.org/10.4028/www.scientific.net/ast.74.119

Kuprikov, V. I., Pilipenko, V. V., Soznik, A. P. (2006). Analysis of nucleon-nucleus scattering in terms of a microscopic optical potential based on effective Skyrme forces. Physics of Atomic Nuclei, 69 (1), 6–15. doi: https://doi.org/10.1134/s1063778806010029

Deyneko, N., Semkiv, O., Soshinsky, O., Streletc, V., Shevchenko, R. (2018). Results of studying the Cu/ITO transparent back contacts for solar cells SnO2:F/CdS/CdTe/Cu/ITO. Eastern-European Journal of Enterprise Technologies, 4 (5 (94)), 29–34. doi: https://doi.org/10.15587/1729-4061.2018.139867

Deyneko, N., Semkiv, O., Khmyrov, I., Khryapynskyy, A. (2018). Investigation of the combination of ITO/CdS/CdTe/Cu/Au solar cells in microassembly for electrical supply of field cables. Eastern-European Journal of Enterprise Technologies, 1 (12 (91)), 18–23. doi: https://doi.org/10.15587/1729-4061.2018.124575

Hripunov, G. S., Boyko, B. T. (2004). Flexible ITO/CdS/CdTe/Cu/Au solar cells with high specific capacity. PSE, 2 (1-2), 69–73.

Mamazza, R., Balasubramanian, U., More, D. L., Ferekides, C. S. (2002). Thin films of CdIn/sub 2/O/sub 4/ as transparent conducting oxides. Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002. doi: https://doi.org/10.1109/pvsc.2002.1190640

Minami, T., Kakumu, T., Takeda, Y., Takata, S. (1996). Highly transparent and conductive ZnO-In2O3 thin films prepared by d.c. magnetron sputtering. Thin Solid Films, 290-291, 1–5. doi: https://doi.org/10.1016/s0040-6090(96)09094-3

Venkatesan, M., Gee, S., Mitra, U. (1989). Indium tin oxide for metallization in microelectronic device. Thin Solid Film, 170, 151–162.

Jeong, W.-J., Park, G.-C. (2001). Electrical and optical properties of ZnO thin film as a function of deposition parameters. Solar Energy Materials and Solar Cells, 65 (1-4), 37–45. doi: https://doi.org/10.1016/s0927-0248(00)00075-1

Karpov, V. G., Shvydka, D., Roussillon, Y. (2004). E2phase transition: Thin-film breakdown and Schottky-barrier suppression. Physical Review B, 70 (15). doi: https://doi.org/10.1103/physrevb.70.155332

Razykov, T. M., Ferekides, C. S., Morel, D., Stefanakos, E., Ullal, H. S., Upadhyaya, H. M. (2011). Solar photovoltaic electricity: Current status and future prospects. Solar Energy, 85 (8), 1580–1608. doi: https://doi.org/10.1016/j.solener.2010.12.002

Fang, Z., Wang, X. C., Wu, H. C., Zhao, C. Z. (2011). Achievements and Challenges of CdS/CdTe Solar Cells. International Journal of Photoenergy, 2011, 1–8. doi: https://doi.org/10.1155/2011/297350




DOI: http://dx.doi.org/10.21303/2461-4262.2019.001002

Refbacks

  • There are currently no refbacks.




Copyright (c) 2019 Natalya Deyneko, Igor Kryvulkin, Mykola Matiushenko, Olexandr Tarasenko, Igor Khmyrov, Anastasiia Khmyrova, Roman Shevchenko

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

ISSN 2461-4262 (Online), ISSN 2461-4254 (Print)