Abstract
The article presents the results of studies on the effect of forward bias on the parameters of solar cells with the ZnO:Al/i-ZnO/CdS/CuIn1 – xGax(S,Se)2/Mo structure, which were previously subjected to reverse bias for 600 s. The results of studies of the current–voltage (I–V) characteristics of copper, indium, gallium, and selenide (CIGS) solar cells (SCs), before and after exposure to forward bias, indicate a difference in the effect of forward bias from exposure to long-term illumination, in which there is a restoration of parameters that have changed during reverse bias. Although the effect of forward bias is in some sense considered identical to the operation of a SC under illumination, when exposed to forward bias, further deterioration of the electrophysical parameters of the SC is observed, which can be interpreted on the basis of the charge state rearrangement model.
REFERENCES
Green, M.A., Dunlop, E.D., Levi, D.H., Hohl-Ebinger, J., Yoshita, M., and Ho-Baillie, A.W.Y., Solar cell efficiency tables (version 54), Prog. Photovoltaics Res. Appl., 2019, vol. 27, pp. 565–575. https://doi.org/10.1002/pip.3171
Nakamura, M., Yamaguchi, K., Kimoto, Y., Yasaki, Y., Kato, T., and Sugimoto, H., Cd-free Cu(In,Ga)(Se,S)2 thin-film solar cell with record efficiency of 23.35%, IEEE J. Photovoltaics, 2019, vol. 9, pp. 1863–1867. https://doi.org/10.1109/JPHOTOV.2019.2937218
Komilov, A.G., Influence of CdS buffer layer thickness on the photovoltaic parameters of solar cells, Appl. Sol. Energy, 2018, vol. 54, pp. 308–309. https://doi.org/10.3103/S0003701X18050092
Wolden, C.A., Kurtin, J., Baxter, J.B., Repins, I., Shaheen, S.E., Torvik, J.T., Rockett, A.A., Fthenakis, V.M., and Aydil, E.S., Photovoltaic manufacturing: Present status, future prospects, and research needs, J. Vac. Sci. Technol. A, 2011, vol. 29, p. 030801. https://doi.org/10.1116/1.3569757
Osterwald, C.R. and McMahon, T.J., History of accelerated and qualification testing of terrestrial photovoltaic modules: A literature review, Prog. Photovoltaics Res. Appl., 2009, vol. 17, pp. 11–33. https://doi.org/10.1002/pip.861
Dongaonkar, S., Alam, M.A., Karthik, Y., Mahapatra, S., Wang, D., and Frei, M., Identification, characterization, and implications of shadow degradation in thin film solar cells, 2011 Int. Reliability Phys. Symp., IEEE, 2011, pp. 5E.4.1–5E.4.5. https://doi.org/10.1109/IRPS.2011.5784535
Westin, M.E.P.-O., Zimmermann, U., and Stolt, L., Reverse bias damage in CIGS modules, 24th Eur. Photovoltaic Sol. Energy Conf., Hamburg, Germany, 2009, pp. 2967–2970. https://doi.org/10.4229/24thEUPVSEC2009-3BV.5.34
Silverman, T.J., Deceglie, M.G., Sun, X., Garris, R.L., Alam, M.A., Deline, C., and Kurtz, S., Thermal and electrical effects of partial shade in monolithic thin-film photovoltaic modules, IEEE J. Photovoltaics, 2015, vol. 5, pp. 1742–1747. https://doi.org/10.1109/JPHOTOV.2015.2478071
Ramabadran, R. and Mathur, B., Effect of shading on series and parallel connected solar PV modules, Mod. Appl. Sci., 2009, vol. 3. https://doi.org/10.5539/mas.v3n10p32
Nardone, M., Dahal, S., and Waddle, J.M., Shading-induced failure in thin-film photovoltaic modules: Electrothermal simulation with nonuniformities, Sol. Energy., 2016, vol. 139, pp. 381–388. https://doi.org/10.1016/j.solener.2016.10.006
Palmiotti, E., Johnston, S., Gerber, A., Guthrey, H., Rockett, A., Mansfield, L., Silverman, T.J., and Al-Jassim, M., Identification and analysis of partial shading breakdown sites in CuInxGa(1 – x)Se2 modules, Sol. Energy, 2018, vol. 161, pp. 1–5. https://doi.org/10.1016/j.solener.2017.12.019
Ruberto, M.N. and Rothwarf, A., Time-dependent open-circuit voltage in CuInSe2/CdS solar cells: Theory and experiment, J. Appl. Phys., 1987, vol. 61, pp. 4662–4669. https://doi.org/10.1063/1.338377
Zabierowski, P., Rau, U., and Igalson, M., Classification of metastabilities in the electrical characteristics of ZnO/CdS/Cu(In,Ga)Se2 solar cells, Thin Solid Films, 2001, vol. 387, pp. 147–150. https://doi.org/10.1016/S0040-6090(00)01850-2
Meyer, T., Schmidt, M., Engelhardt, F., Parisi, J., and Rau, U., A model for the open circuit voltage relaxation in Cu(In,Ga)Se2 heterojunction solar cells, Eur. Phys. J. Appl. Phys., 1999, vol. 8, pp. 43–52. https://doi.org/10.1051/epjap:1999228
Lang, D.V. and Logan, R.A., Large-lattice-relaxation model for persistent photoconductivity in compound semiconductors, Phys. Rev. Lett., 1977, vol. 39, pp. 635–639. https://doi.org/10.1103/PhysRevLett.39.635
Igalson, M., Zabierowski, P., Prządo, D., Urbaniak, A., Edoff, M., and Shafarman, W.N., Understanding defect-related issues limiting efficiency of CIGS solar cells, Sol. Energy Mater. Sol. Cells., 2009, vol. 93, pp. 1290–1295. https://doi.org/10.1016/j.solmat.2009.01.022
Siebentritt, S., Igalson, M., Persson, C., and Lany, S., The electronic structure of chalcopyrites-bands, point defects and grain boundaries, Prog. Photovoltaics Res. Appl., 2010, vol. 18, pp. 390–410. https://doi.org/10.1002/pip.936
Igalson, M., Metastable defect distributions in CIGS solar cells and their impact on device efficiency, MRS Proc. 1012, 2007, p. 1012-Y04-01. https://doi.org/10.1557/PROC-1012-Y04-01
Jensen, S.A., Kanevce, A., Mansfield, L.M., Glynn, S., Lany, S., and Kuciauskas, D., Optically induced metastability in Cu(In,Ga)Se2, Sci. Rep., 2017, vol. 7, p. 13788. https://doi.org/10.1038/s41598-017-14344-6
Paul, P.K., Jarmar, T., Stolt, L., Rockett, A., and Arehart, A.R., Role of EV+0.98 eV trap in light soaking-induced short circuit current instability in CIGS solar cells, 2018. http://arxiv.org/abs/1806.06665.
Lany, S. and Zunger, A., Light- and bias-induced metastabilities in Cu(In,Ga)Se2 based solar cells caused by the (VSe-VCu) vacancy complex, J. Appl. Phys., 2006, vol. 100, p. 113725. https://doi.org/10.1063/1.2388256
Komilov, A., Effect of light absorption on electrophysical characteristics of solar cells with ZnO:Al/i-ZnO/CdS/CuIn1 – xGax(S,Se)2/Mo structure, Innovatsionnye Tekhnol., 2020, vol. 4, pp. 16–20.
Komilov, A.G., Influence of reverse bias on the parameters of solar cells based on CIGS, Uzb. Fiz. Zh., 2020, vol. 22, pp. 227–236.
Scheer, R. and Schock, H.-W., Chalcogenide Photovoltaics Physics, Technologies, and Thin Film Devices, Germany: Wiley-VCH Verlag, 2011.
Sze, S.M. and Ng, K.K., Physics of Semiconductor Devices, Hoboken, NJ: John Wiley & Sons, 2006. https://doi.org/10.1002/0470068329
Green, M.A., Solar cells—Operating principles, technology and system applications, 1982. https://doi.org/10.1016/0038-092X(82)90265-1
ACKNOWLEDGMENTS
The study was carried out within the theme of the laboratory Solar Thermal and Power Installations of the Physical–Technical Institute, Academy of Sciences of the Republic of Uzbekistan.
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Komilov, A.G., Egamberdiev, B.E., Kabulov, R. et al. The Result of Successive Exposure to Reverse and Forward Bias on the Electrophysical Characteristics of ZnO:Al/i-ZnO/CdS/CuIn1 – xGax(S, Se)2/Mo Structure Solar Cells. Appl. Sol. Energy 58, 476–481 (2022). https://doi.org/10.3103/S0003701X22040090
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DOI: https://doi.org/10.3103/S0003701X22040090