Abstract
The binding energy of an impurity delta layer situated either in the centre or at the edge of a quantum well (QW) is theoretically considered for the example of n-type Si0.8Ge0.2/Si/Si0.8Ge0.2 QW doped with phosphorus. Calculations are made for the case of not so big impurity concentrations, when impurity bands are not yet formed and it is still possible to treat impurity as isolated ones. It is shown on the base of self-consistent solution of Schrödinger, Poisson and electro-neutrality equations that impurity binding energy is dependent on the degree of impurity ionization and the most noticeably for the case of edge-doped QWs.
Similar content being viewed by others
References
Bastard G 1981 Phys. Rev. B24 4714
Bir G L et al 1974 Symmetry and strain-induced effects in semiconductors (New York: Wiley)
Blom A et al 2003 Phys. Rev. B68 165338
Brum J A et al 1984 Phys. Rev. B30 905
Cartoixa X et al 2005 Phys. Rev. B72 125330
Rodriguez-Vargas I et al 2006 J. Appl. Phys. 99 033702
Schmalz K et al 1998 Phys. Rev. B57 6579
Scolfaro L M et al 1994 Phys. Rev. B50 8699
Shklovskii B I et al 1984 Electronic properties of doped semiconductors (Heidelberg: Springer)
Stopa M et al 1989 Phys. Rev. B40 8466
Tulupenko V et al 2011 J. Appl. Phys. 109 064303
Tulupenko V et al 2013 Philos. Mag. Lett. 93 42
Van de Walle C G et al 1986 Phys. Rev. B34 5621
Vinter B 1982 Phys. Rev. B26 6808
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Tulupenko, V., Duque, C.A., Demediuk, R. et al. Impurity binding energy for δ-doped quantum well structures. Bull Mater Sci 37, 1347–1351 (2014). https://doi.org/10.1007/s12034-014-0082-6
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12034-014-0082-6