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Optical Absorption and Photoluminescence of Cylindrical Quantum Dot with Modified Pöschl-Teller and Morse Confining Potentials

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International Youth Conference on Electronics, Telecommunications and Information Technologies

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 255))

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Abstract

The investigation of absorption spectra and photoluminescence of the cylindrical quantum dot with two models of confinement potentials, namely modified Pöschl-Teller and Morse, in axial direction have been considered in the regime of strong quantization. The interband optical transitions from heavy and light hole states to electron states have been observed for diagonal and off-diagonal transitions. Selection rules and oscillator strengths for these transitions have been obtained for different values of potentials parameters. The absorption spectra for above mentioned transitions have been plotted. At the same time, the photoluminescence spectra have been constructed depending on the incident light energy. The exciton radiative lifetime in the cylindrical quantum dot with different types of confinement potentials have been calculated.

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Author information

Authors and Affiliations

  1. A.I. Alikhanyan National Scientific Laboratory Foundation, Alikhanyan Brothers 2, 0036, Yerevan, Republic of Armenia

    Tigran V. Kotanjyan

  2. Department of General Physics and Quantum Nanostructures, Russian-Armenian University, 123 Hovsep Emin Str., 0051, Yerevan, Armenia

    Hovhannes Kh. Tevosyan

Authors
  1. Tigran V. Kotanjyan
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  2. Hovhannes Kh. Tevosyan
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Corresponding author

Correspondence to Tigran V. Kotanjyan .

Editor information

Editors and Affiliations

  1. Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia

    Elena Velichko

  2. Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia

    Maksim Vinnichenko

  3. Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia

    Victoria Kapralova

  4. Tampere University of Technology, Tampere, Finland

    Yevgeni Koucheryavy

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Kotanjyan, T.V., Tevosyan, H.K. (2021). Optical Absorption and Photoluminescence of Cylindrical Quantum Dot with Modified Pöschl-Teller and Morse Confining Potentials. In: Velichko, E., Vinnichenko, M., Kapralova, V., Koucheryavy, Y. (eds) International Youth Conference on Electronics, Telecommunications and Information Technologies. Springer Proceedings in Physics, vol 255. Springer, Cham. https://doi.org/10.1007/978-3-030-58868-7_8

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