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Journal of Nanomaterials
Volume 2015, Article ID 915742, 6 pages
Research Article

Direct Interband Light Absorption in Conical Quantum Dot

1Russian-Armenian (Slavonic) University, H. Emin 123, 0051 Yerevan, Armenia
2Yerevan State University, A. Manoogian 1, 0025 Yerevan, Armenia
3Peter The Great Saint-Petersburg Polytechnic University, Polytechnicheskaya 29, St. Petersburg 195251, Russia

Received 31 August 2015; Revised 3 November 2015; Accepted 4 November 2015

Academic Editor: Paulo Cesar Morais

Copyright © 2015 D. B. Hayrapetyan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In the framework of the adiabatic approximation, the energy states of electron as well as the direct light absorption are investigated in conical quantum dot. Analytical expressions for particle energy spectrum are obtained. The dependence of the absorption edge on geometrical parameters of conical quantum dot is obtained. Selection rules are revealed for transitions between levels with different quantum numbers. In particular, it is shown that for the radial quantum number transitions are allowed between the levels with the same quantum numbers, and any transitions between different levels are allowed for the principal quantum number.