Open AccessГетероструктура квантово-каскадного детектора частотного диапазона 2.5 ТГц
Author(s) -
А.В. Бабичев,
Е.С. Колодезный,
А.Г. Гладышев,
Д.В. Денисов,
Arnaud Jollivet,
Patrick Quach,
Л.Я. Карачинский,
В.Н. Неведомский,
И.И. Новиков,
Maria Tchernycheva,
F. H. Julien,
А.Ю. Егоров
Publication year - 2022
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2022.03.52124.9750
Subject(s) - cascade , heterojunction , molecular beam epitaxy , detector , full width at half maximum , diffraction , optics , materials science , optoelectronics , physics , quantum , epitaxy , chemistry , nanotechnology , quantum mechanics , chromatography , layer (electronics)
The design of the heterostructure of a 2.5 THz range quantum-cascade detector is proposed and heterostructure is grown by molecular-beam epitaxy technique. To optimize the thicknesses of the layers of the heterostructure cascades, a numerical method for iterative solution of the Schrodinger ¨ −Poissonequation in the k · p formalism was used. The grown heterostructure of the quantum-cascade detector showed a high structural perfection, confirmed by the small values of the average FWHM of the high-order satellite peaks on the X-ray diffraction rocking curves, which were (8.3 ± 0.5)′′. Analysis of dark-field images obtained by transmission electron microscopy showed that the total thickness of the layers in the cascade is (137.3 ± 6.9) nm, which corresponds to the calculated thickness of the layers in the cascade of the heterostructure of the quantum-cascade detector.