Abstract
It has been shown that in addition to the conventional mechanism of photovoltaic effect in organic solar cells (OSCs), which is the ionization of molecular excitons on impurities, a new mechanism is possible in nanoscale cells, namely, tunneling autoionization in a strong electric field of the pn junction. Its quantum yield for molecular excitons and charge-transfer excitons becomes higher than for ionization on impurities with a cell length of less than 20–25 or 60–80 lattice periods (~10 and ~25 nm), respectively. The possibility of creating cascades of series-connected OSCs with a quantum yield close to 1 on the basis of the new mechanism is discussed.
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References
Organic Solar Cells: Materials and Device Physics, Choy, W.C.H., Ed., London: Springer, 2013.
Chen, Y.-H., Lin, L.-H., Lu, C.-W., Lin, F., Huang, Z.-Y., Lin, H.-W., Wang, P.-H., Liu, Y.-H., Wong, K.-T., Wen, J., Miller, D.J., and Darling, S.B.J., Am. Chem. Soc., 2012, vol. 134, p. 13616.
Dennler, G., Scharber, M.C., and Brabec, C.J., Adv. Mater., 2009, vol. 21, p. 1323.
Li, N. and Forrest, S.R., Appl. Phys. Lett., 2009, vol. 95, no. 123309.
Chen, M.C., Liaw, D.J., Huang, Y.C., Wu, H.Y., and Tai, Y., Sol. Energy Mater. Sol. Cells, 2011, vol. 95, p. 2621.
Cnops, K., Rand, B.P., Cheyns, D., and Heremans, P., Appl. Phys. Lett., 2012, p. 143301.
Dou, L., You, J., Yang, J., Chen, C-C., He, Y., Murase, S., Moriarty, T., Emery, K., Li, G., and Yang, Y., Nat. Photon., 2012, vol. 6, p.180.
Schlenker, C.W., Barlier, V.S., Chin, S.W., Whited,M.T., McAnally, R.E., Forrest, S.R., and Thompson, M.E., Chem. Mater., 2011, vol. 23, p. 4132.
Liang, Y., Xu, Z., Xia, J., Tsai, S.-T., Wu, Y., Li, G., Ray, C., and Yu, L., Adv. Mater., 2010, vol. 22, p. E135.
Rubo, M., Kaji, T., and Hiramoto, M., AIP Adv., 2011, vol. 1, no. 032177.
Benderskii, V.A. and Kats, E.I., JETP Lett., 2015, vol. 101, p.19.
Benderskii, V.A., Kats. E.I, High Energy Chem., 2018, vol. 52, no. 5, p.390.
Akimov, A.V. and Prezhdo, O.V., Chem. Rev., 2015, vol. 115, p. 5797.
Tortorella, S., Talamo, M.P., Cardone, A., Pastore, M., and DeAngelis, F., J. Phys.: Condens. Matter, 2016, vol. 28, no. 074005.
Landau, L.D. and Lifshits, E.M., Kvantovaya mekhanika (Quantum Mechanics), Moscow: Nauka, 1989.
Herring, C., Rev. Mod. Phys., 1962, vol. 34, p.631.
Benderskii, V.A. and Vetoshkin, E.V., Chem. Phys., 2000, vol. 257, p. 203.
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Original Russian Text © V.A. Benderskii, E.I. Kats, 2018, published in Khimiya Vysokikh Energii, 2018, Vol. 52, No. 5, pp. 385–391.
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Benderskii, V.A., Kats, E.I. Autoionization of Excitons in Organic Solar Cells. High Energy Chem 52, 400–406 (2018). https://doi.org/10.1134/S0018143918050041
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DOI: https://doi.org/10.1134/S0018143918050041