Abstract
The effect of a two-dimensional quantum-confined structure formed at a polymer/polymer interface on the radiative recombination of excitons (i.e., electroluminescence) is investigated. It is shown that the implementation of such a structure in a polymer film leads to an increase in the emission intensity by more than two orders of magnitude and a twofold decrease in the voltage threshold for double injection. It is established that the polymer/polymer interface serves as the front of exciton recombination, and its position inside the film affects the electroluminescence intensity. The position of the two-dimensional structure within the polymer film corresponding to the highest intensity of radiative recombination is a function of the ratio of electron and hole mobilities.
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Acknowledgments
We are grateful to Prof. S.N. Salazkin for courteously providing the polymer samples investigated.
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Russian Text © The Author(s), 2019, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2019, Vol. 110, No. 7, pp. 437-442.
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Lezhnev, S.K., Yusupov, A.R., Galiev, A.F. et al. Electroluminescence of a Polymer Film with a Polymer/Polymer Interface. Jetp Lett. 110, 447–451 (2019). https://doi.org/10.1134/S0021364019190093
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DOI: https://doi.org/10.1134/S0021364019190093