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Optical properties of GaN/AlN constant total effective radius multi-wells quantum rings

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Abstract

In this study, we have investigated the effect of the number of wells and quantum ring thickness on subband energy levels, intersubband transition energies and optical properties of a constant total effective radius multi-wells quantum rings. By increasing of the number of wells from 1 to 2, we have red shift in the absorption peak positions while by more increasing of the number of wells from 2 to 10 a blue shift is visible. By increasing of the number of wells for system with \(\hbox {R}_{0}=40\,\hbox {nm}\) (large inner radius), we only see a blue shift. Increasing of the \(\hbox {R}_{0}\) values at a constant well numbers or increasing of the well numbers at constant \(\hbox {R}_{0}\) values lead the increase of the absorption coefficient amplitude. In the later case, single quantum well system is an exception.

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Acknowledgments

We are grateful for the financial support of the Iranian Nanotechnology Initiative Council (INIC) and Qom University of Technology supports.

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  1. Department of Physics, Faculty of sciences, Qom University of Technology, Qom, Iran

    M. Solaimani & A. Latifi

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  1. M. Solaimani
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  2. A. Latifi
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Correspondence to M. Solaimani.

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Solaimani, M., Latifi, A. Optical properties of GaN/AlN constant total effective radius multi-wells quantum rings. Opt Quant Electron 47, 1901–1910 (2015). https://doi.org/10.1007/s11082-014-0056-3

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