Photoluminescence and Transmission Electron Microscopy Methods for Characterization of Super-Multiperiod A3B5 Quantum Well Structures
- Autores: Goray L.1,2,3, Pirogov E.1, Nikitina E.1, Ubyivovk E.4, Gerchikov L.1,5, Ipatov A.1,5, Dashkov A.1, Sobolev M.1, Ilkiv I.1, Bouravlev A.1
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Afiliações:
- St. Petersburg Academic University
- ITMO University
- Institute for Analytical Instrumentation
- Saint-Petersburg State University
- Peter the Great St. Petersburg Polytechnic University
- Edição: Volume 53, Nº 14 (2019)
- Páginas: 1914-1917
- Seção: Nanostructures Characterization
- URL: https://journals.rcsi.science/1063-7826/article/view/207516
- DOI: https://doi.org/10.1134/S1063782619140094
- ID: 207516
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Resumo
Promising semiconductor devices, such as quantum-cascade lasers and similar to them heterostructures with multiple strongly-coupled quantum wells, may contain hundreds and even thousands of layers. Independent methods of photoluminescence (PL) and transmission electron microscopy (TEM), along with X-ray diffractometry and reflectometry, make it possible to characterize super-multiperiod (SMP—superlattices with 100 and more periods) structures and to determine, with high accuracy, the thicknesses of layers, the roughness/diffusion of interfaces and the composition of solid solutions. The difference between the expected and measured using PL and TEM thicknesses of the layers of GaAs/AlGaAs samples synthesized by molecular beam epitaxy was 5–10%. The SMP structures are characterized by stable thicknesses of the layers in depth and sharp boundaries with a width of transition interfaces of the order of several Å that is consistent with the X-ray analysis. Based on the data obtained on thicknesses of layers, by comparing the theoretical and experimental values of photoluminescence intensities it is possible to accurately determine the composition of Al0.3Ga0.7As which corresponds to the X-ray diffraction data.
Sobre autores
L. Goray
St. Petersburg Academic University; ITMO University; Institute for Analytical Instrumentation
Autor responsável pela correspondência
Email: lig@pcgrate.com
Rússia, St. Petersburg; St. Petersburg; St. Petersburg
E. Pirogov
St. Petersburg Academic University
Autor responsável pela correspondência
Email: zzzavr@gmail.com
Rússia, St. Petersburg
E. Nikitina
St. Petersburg Academic University
Autor responsável pela correspondência
Email: mail.nikitina@mail.ru
Rússia, St. Petersburg
E. Ubyivovk
Saint-Petersburg State University
Autor responsável pela correspondência
Email: ubyivovk@gmail.com
Rússia, St. Petersburg
L. Gerchikov
St. Petersburg Academic University; Peter the Great St. Petersburg Polytechnic University
Autor responsável pela correspondência
Email: lgerchikov@mail.ru
Rússia, St. Petersburg; St. Petersburg
A. Ipatov
St. Petersburg Academic University; Peter the Great St. Petersburg Polytechnic University
Email: Bour@mail.ioffe.ru
Rússia, St. Petersburg; St. Petersburg
A. Dashkov
St. Petersburg Academic University
Autor responsável pela correspondência
Email: Dashkov.Alexander.OM@gmail.com
Rússia, St. Petersburg
M. Sobolev
St. Petersburg Academic University
Autor responsável pela correspondência
Email: sobolevsms@gmail.com
Rússia, St. Petersburg
I. Ilkiv
St. Petersburg Academic University
Autor responsável pela correspondência
Email: fiskerr@ymail.com
Rússia, St. Petersburg
A. Bouravlev
St. Petersburg Academic University
Autor responsável pela correspondência
Email: Bour@mail.ioffe.ru
Rússia, St. Petersburg