Abstract
The effect of the electrostatic interaction of charges in multiple quantum wells of a doped heterostructure is studied by admittance spectroscopy methods and numerical self-consistent calculations. Samples containing three InGaAs/GaAs quantum wells each 7 nm thick, separated by 150-nm barriers, are studied in detail. The InAs content in the wells is 22, 16, and 11.5%. Experimentally and by simulation, it is shown that the effect of the relative carrier depletion in the middle quantum well occurs due to the joining of local spacecharge regions around the quantum wells and is accompanied by raise of the middle well potential. The quantitative characteristics of this effect are analyzed depending on temperature, barrier thickness, and dopant concentration.
Similar content being viewed by others
References
F. Bugge, U. Zeimer, M. Sato, M. Weyers, and G. Tränkle, J. Cryst. Growth 183, 511 (1998).
V. I. Zubkov, M. A. Melnik, A. V. Solomonov, E. O. Tsvelev, F. Bugge, M. Weyers, and G. Tränkle, Phys. Rev. B 70, 075312 (2004).
V. I. Zubkov, Diagnostics of Semiconductor Nanoheterostructures by Admittance Methods (Elmor, St.-Petersburg, 2007) [in Russian].
A. A. Barybin and E. J. P. Santos, Semicond. Sci. Technol. 22, 1225 (2007).
V. I. Zubkov, Semiconductors 41, 320 (2007).
A. N. Petrovskaya and V. I. Zubkov, Semiconductors 43, 1328 (2009).
O. V. Kucherova, V. I. Zubkov, E. O. Tsvelev, I. N. Yakovlev, and A. V. Solomonov, Zavod. Lab. 76(3), 24 (2010).
L. S. Berman, The Capacitance Methods of Semiconductor Research (Nauka, Leningrad, 1972) [in Russian].
F. Stern and S. Das Sarma, Phys. Rev. B 30, 840 (1984).
A. Ya. Shik, L. G. Bakueva, S. F. Musikhin, and S. A. Rykov, Physics of Low-Dimensional Systems (Nauka, St.-Petersburg, 2001) [in Russian].
V. I. Zubkov, Semiconductors 40, 1204 (2006).
P. Blood and J. W. Orton, The Electrical Characterization of Semiconductors: Majority Carriers and Electron States (Academic Press, London, 1992).
L. S. Berman and A. A. Lebedev, Capacitance Spectroscopy of Deep-Level Centers in Semiconductors (Nauka, Leningrad, 1981) [in Russian].
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.I. Zubkov, I.N. Yakovlev, V.G. Litvinov, A.V. Ermachihin, O.V. Kucherova, V.N. Cherkasova, 2014, published in Fizika i Tekhnika Poluprovodnikov, 2014, Vol. 48, No. 7, pp. 944–950.
Rights and permissions
About this article
Cite this article
Zubkov, V.I., Yakovlev, I.N., Litvinov, V.G. et al. Analysis of the electrostatic interaction of charges in multiple InGaAs/GaAs quantum wells by admittance-spectroscopy methods. Semiconductors 48, 917–923 (2014). https://doi.org/10.1134/S1063782614070227
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063782614070227