Effects of Size Nonuniformity on the Optical Transitions in a set of Realistic InxGa1-xN/GaN Quantum Dots, having a Gaussian Distribution

Sanjib Kabi; Siddhartha Panda; Dipankar Biswas

doi:10.1117/12.925882

15 October 2012 Effects of size nonuniformity on the optical transitions in a set of realistic InxGa1-xN/GaN quantum dots, having a Gaussian distribution

Sanjib Kabi, Siddhartha Panda, Dipankar Biswas

Author Affiliations +

Proceedings Volume 8549, 16th International Workshop on Physics of Semiconductor Devices; 85491V (2012) https://doi.org/10.1117/12.925882
Event: 16th International Workshop on Physics of Semiconductor Devices, 2011, Kanpur, India

Abstract

The absorption spectra of semiconductor quantum dots (QDs) are expected to be a series of δ-function-like discrete lines due to the nature of the density of states. In a realistic III–V QD system, the absorption spectra is the superimposition of the contribution from each individual dot and the overall behavior is modeled by considering a Gaussian size distribution. In this paper, we study and present the dependence of the Gaussian nature of the absorption spectra of In_XGa_1−XN/GaN QD systems on the dot size distribution. The dots were approximated as elongated rectangular boxes having finite potentials at the boundaries. The optical transitions and absorption spectra of In_XGa_1−XN/GaN QDs that have a square base and the variation of the height is Gaussian, are computed and analyzed

Citation Download Citation

Sanjib Kabi, Siddhartha Panda, and Dipankar Biswas "Effects of size nonuniformity on the optical transitions in a set of realistic InxGa1-xN/GaN quantum dots, having a Gaussian distribution", Proc. SPIE 8549, 16th International Workshop on Physics of Semiconductor Devices, 85491V (15 October 2012); https://doi.org/10.1117/12.925882

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