doi: 10.17586/2226-1494-2016-16-1-76-84


N. K. Zhumashev, K. D. Munbaev, N. L. Bazhenov, N. D. Stoyanov, S. S. Kizhaev, T. I. Gurina, A. P. Astakhova, A. V. Tchernyaev, S. S. Molchanov, H. K. Lipsanen, K. M. Salikhov, V. E. Bougrov

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For citation: Zhumashev N.K., Mynbaev K.D., Bazhenov N.L., Stoyanov N.D., Kizhaev S.S., Gurina T.I., Astakhova A.P., Tchernyaev A.V., Molchanov S.S., Lipsanen H., Salikhov Kh.M., Bougrov V.E. Spectral characteristics of mid-infrared light-emitting diodes based on InAs(Sb,P). Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2016, vol. 16, no. 1, pp. 76–84.


Subject of Study.We consider spectral characteristics of mid-infrared light-emitting diodes with heterostructures based on InAs(Sb,P) emitting at T=300 K in the wavelength range 3.4–4.1 micrometers. The aim of the study was to search for the ways of increasing the diode efficiency. Methods. The heterostructures were grown from metal-organic chemical compounds with the use of vapor-phase epitaxial technique. The spectra were recorded under pulse excitation with the use of computer-controlled installation employing MDR-23 grating monochromator and a lock-in amplifier. InSb photodiode was used as a detector. Comparative study of electroluminescence spectra of the diodes was carried out at the temperatures equal to 300 K and 77 K. We compared the obtained data with the calculation results of the band diagrams of the heterostructures. Main Results. As a result of comparative study of the electroluminescence spectra of the diodes recorded at 300 K and 77 K we have established that increasing of their efficiency is hindered by substantial influence of Auger recombination. For the first time at 77 Кwe have observed the effect of stimulated emission from InAsSb active layer in light-emitting structures made of InAs/InAsSb/InAsSbP. For heterostructures with quantum wells InAs/(InAs/InAsSb)/InAsSbP we have  found out that at 77 Кthe carrier recombination occurs outside quantum wells, which points out to the insufficient carrier localization in the active layer. Thus, we have shown that the efficiency of mid-infrared light-emitting diodes based on InAs(Sb,P) can be increased via suppression of Auger-recombination and improvement of carrier localization in the active region. Practical Relevance. The results of the study can be used for development of heterostructures for mid-infrared light-emitting diodes.

Keywords: infrared light-emitting diode, electroluminescence, recombination

Acknowledgements. This work was financially supported by the Russian Government via funds allotted for the implementation of the Program for competitive growth of ITMO University among the leading world academic centres for 2013-2020.


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