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Differential Absorption Features of CdSe QDs in the Case of Resonant and Nonresonant Excitons Excitation

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Abstract

Nanosecond differential absorption measurements of spherical CdSe QDs at the quasi-stationary resonant and nonresonant excitation of basic exciton transitions are reported. The significant decrease in absorption and saturation of the basic exciton transition 1Sh3/2–1Se are explained by the state filling effect. The observed blue shift of differential absorption minima with increasing pump intensities was explained by strong exciton–phonon interaction. In addition, the 2Sh3/2–1Se exciton transition bleaching and induced absorption of mixed 1Ph3/2–1Pe and 2Sh1/2–1Se exciton transitions were found.

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Funding

This work was supported by the Russian Science Foundation (18-72-00075).

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Authors and Affiliations

  1. Moscow State University, 119991, Moscow, Russia

    A. M. Smirnov, A. D. Golinskaya, E. V. Zharkova, S. S. Bubenov, S. G. Dorofeev & V. S. Dneprovskii

  2. Kotelnikov IRE RAS, 125009, Moscow, Russia

    A. M. Smirnov & A. D. Golinskaya

Authors
  1. A. M. Smirnov
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  2. A. D. Golinskaya
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  3. E. V. Zharkova
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  4. S. S. Bubenov
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  5. S. G. Dorofeev
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  6. V. S. Dneprovskii
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Corresponding authors

Correspondence to A. M. Smirnov, A. D. Golinskaya, E. V. Zharkova, S. S. Bubenov, S. G. Dorofeev or V. S. Dneprovskii.

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Smirnov, A.M., Golinskaya, A.D., Zharkova, E.V. et al. Differential Absorption Features of CdSe QDs in the Case of Resonant and Nonresonant Excitons Excitation. Semiconductors 53, 2155–2157 (2019). https://doi.org/10.1134/S1063782619120285

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  • DOI: https://doi.org/10.1134/S1063782619120285

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