Optimization of cubic GaN/AlGaN quantum well-based structures for intersubband absorption in the infrared spectral range
Апстракт
A method is proposed for the optimization of structural parameters of GaN/AlGaN quantum wells and Bragg-confined structures, with respect to peak intersubband absorption from the ground to the first excited electronic state in the mid and near infrared spectral range. It is based on the application of the Genetic Algorithm and delivers globally optimal structures with a preset number of embedded layers. Simple rectangular quantum well profile is investigated for the maximal Stark effect and applications to tunable mid-infrared photodetectors. In case of Bragg-confined structures, an above the barrier bound state is used to extend the range of transition energies above the values available in conventional quantum wells. The effects of band nonparabolicity are taken into account. (C) 2013 Elsevier Ltd. All rights reserved
Кључне речи:
Bragg-confined structures / Quantum wells / Intersubband absorption / Genetic algorithmИзвор:
Solid State Communications, 2014, 182, 38-42Финансирање / пројекти:
- Фотоника микро и нано структурних материјала (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45010)
DOI: 10.1016/j.ssc.2013.12.006
ISSN: 0038-1098; 1879-2766
WoS: 000331635900010
Scopus: 2-s2.0-84891871532
Колекције
Институција/група
VinčaTY - JOUR AU - Radosavljević, Ana AU - Radovanović, Jelena V. AU - Milanović, Vitomir B. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5891 AB - A method is proposed for the optimization of structural parameters of GaN/AlGaN quantum wells and Bragg-confined structures, with respect to peak intersubband absorption from the ground to the first excited electronic state in the mid and near infrared spectral range. It is based on the application of the Genetic Algorithm and delivers globally optimal structures with a preset number of embedded layers. Simple rectangular quantum well profile is investigated for the maximal Stark effect and applications to tunable mid-infrared photodetectors. In case of Bragg-confined structures, an above the barrier bound state is used to extend the range of transition energies above the values available in conventional quantum wells. The effects of band nonparabolicity are taken into account. (C) 2013 Elsevier Ltd. All rights reserved T2 - Solid State Communications T1 - Optimization of cubic GaN/AlGaN quantum well-based structures for intersubband absorption in the infrared spectral range VL - 182 SP - 38 EP - 42 DO - 10.1016/j.ssc.2013.12.006 ER -
@article{ author = "Radosavljević, Ana and Radovanović, Jelena V. and Milanović, Vitomir B.", year = "2014", abstract = "A method is proposed for the optimization of structural parameters of GaN/AlGaN quantum wells and Bragg-confined structures, with respect to peak intersubband absorption from the ground to the first excited electronic state in the mid and near infrared spectral range. It is based on the application of the Genetic Algorithm and delivers globally optimal structures with a preset number of embedded layers. Simple rectangular quantum well profile is investigated for the maximal Stark effect and applications to tunable mid-infrared photodetectors. In case of Bragg-confined structures, an above the barrier bound state is used to extend the range of transition energies above the values available in conventional quantum wells. The effects of band nonparabolicity are taken into account. (C) 2013 Elsevier Ltd. All rights reserved", journal = "Solid State Communications", title = "Optimization of cubic GaN/AlGaN quantum well-based structures for intersubband absorption in the infrared spectral range", volume = "182", pages = "38-42", doi = "10.1016/j.ssc.2013.12.006" }
Radosavljević, A., Radovanović, J. V.,& Milanović, V. B.. (2014). Optimization of cubic GaN/AlGaN quantum well-based structures for intersubband absorption in the infrared spectral range. in Solid State Communications, 182, 38-42. https://doi.org/10.1016/j.ssc.2013.12.006
Radosavljević A, Radovanović JV, Milanović VB. Optimization of cubic GaN/AlGaN quantum well-based structures for intersubband absorption in the infrared spectral range. in Solid State Communications. 2014;182:38-42. doi:10.1016/j.ssc.2013.12.006 .
Radosavljević, Ana, Radovanović, Jelena V., Milanović, Vitomir B., "Optimization of cubic GaN/AlGaN quantum well-based structures for intersubband absorption in the infrared spectral range" in Solid State Communications, 182 (2014):38-42, https://doi.org/10.1016/j.ssc.2013.12.006 . .