Abstract
Nonlinear absorption of colloidal solution of core/shell CdSe/CdS nanoplatelets (NPLs) in the case of resonant and nonresonant stationary excitation of the electron/light-hole and electron/heavy-hole exciton transitions was investigated. We have revealed the induced bleaching simultaneously of both exciton transitions. The peculiarities of the nonlinear change in absorption were associated with saturation of exciton transitions absorption due to phase space filling, energy up- and down-conversion mechanisms.
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ACKNOWLEDGMENTS
This work was partly supported by the Russian Foundation for Basic Research (no. 18-02-00719). A.D. Golinskaya acknowledges the financial support of Special scholarship for PhD students of the Physics Faculty of Moscow State University.
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Smirnov, A.M., Golinskaya, A.D., Przhiyalkovskii, D.V. et al. Resonant and Nonresonant Nonlinear Absorption in Colloidal Core/Shell Semiconductor Nanoplatelets. Semiconductors 52, 1798–1800 (2018). https://doi.org/10.1134/S1063782618140300
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DOI: https://doi.org/10.1134/S1063782618140300