The Binding Energy of Impurities in the Asymmetrical Semi-Exponential Quantum Wells

Ünal Yeşilgül

doi:10.17776/csj.481752

Research Article

Asimetrik Yarı-Üstel Kuantum Kuyularındaki Safsızlıkların Bağlanma Enerjisi

Year 2018, Volume: 39 Issue: 4, 1015 - 1019, 24.12.2018

Ünal Yeşilgül

https://doi.org/10.17776/csj.481752

Abstract

Etkin-kütle ve zarf dalga fonksiyonu yaklaşımı
çerçevesinde, varyasyonel bir metot kullanarak, asimetrik yarı-üstel kuantum
kuyularında sığ-donor safsızlıkların bağlanma enerjisini araştırdık. Elde
edilen sayısal sonuçlar, yapı parametrelerinin (σ ve V₀) safsızlık
bağlanma enerjisinde önemli değişikliklere yol açtığını göstermektedir. Ayrıca,
bu sonuçlar, hidrojen içeren donor safsızlıkların bağlanma enerjisinin kuantum
kuyusundaki safsızlık pozisyonunun bir fonksiyonu olarak arttırılabileceği veya
azaltılabileceğini göstermektedir.

Keywords

Kuantum kuyusu, safsızlık

References

[1]. Learitt R.P., Binding energies of hydrogenic impurities in parabolic quantum wells, Phys. Rev. B 36 (1987) 7650-7652.
[2]. Zang J.X., RustgiM.L., Energy levels of a hydrogenic impurity in a parabolic quantum well with a magnetic field, Phys. Rev. B 48 (1993) 2465-2469.
[3]. Niculescu E.C., Binding energy of a double donor in a parabolic quantum well, Phys. Lett. A 197 (1995) 330-334.
[4]. Niculescu E.C., Donor impurity in a finite parabolic quantum well, Phys. Lett. A 213 (1996) 85-88.
[5]. Kasapoglu E., Sarı H., Sokmen I., Binding energies of shallow donor impurities in different shaped quantum wells under an applied electric field, Physica B 339 (2003) 17-22.
[6]. Karlsson K.F., Dupertuis M.A., Weman H., Kapon E., Fractional-dimensional excitonic absorption theory applied to V-groove quantum wires, Phys. Rev. B 70 (2004) 153306.
[7]. Restrepo R.L., Giraldo E., Miranda G.L., Ospina W., Duque C.A., Hydrogenic donor impurity in parallel-triangular quantum wires: Hydrostatic pressure and applied electric field effects, Physica B 404 (2009) 5163-5166.
[8]. Yesilgul U., Linear and nonlinear intersubband optical absorption coefficients and refractive index changes in symmetric double semi-V-shaped quantum wells, Journal of Luminescence 132 (2012) 765–773.
[9]. Liu G., Guo K., Wu Q., Linear and nonlinear intersubband optical absorption and refractive index change in asymmetrical semi-exponential quantum wells, Superlattices and Microstructures 52 (2012) 183-192.
[10]. Mou S., Guo K., Xiao B., Studies on the third-harmonic generation coefficients in asymmetrical semi-exponential quantum wells, Superlattices and Microstructures 65 (2014) 309-318.
[11]. Xiao B., Guo K., Mou S., Zhang Z., Polaron effects on the optical rectification in asymmetrical semi-exponential quantum wells, Superlattices and Microstructures 69 (2014) 122–128.
[12]. Mou S., Guo K., Xiao B., Polaron effects on the linear and nonlinear intersubband optical absorption coefficients in quantum wells with asymmetrical semi-exponential potential, Superlattices and Microstructures 72 (2014) 72–82.
[13]. Sari H., Sökmen I., Yesilgul U., Photoionization of donor impurities in quantum wires in a magnetic field, J. Phys. D: Appl. Phys. 37 (2004) 674–677.
[14]. Kasapoglu E., Yesilgul U., Sari H., Sökmen I., The effect of hydrostatic pressure on the photoionization cross-section and binding energy of impurities in quantum-well wire under the electric field, Physica B 368 (2005) 76–81.
[15]. Kasapoglu E., Yesilgul U., Sari H., Sökmen I., The effect of intense laser field on the photoionization cross-section and binding energy of shallow donor impurities in graded quantum-well wire under an electric field, J. Phys.: Condens. Matter 18 (2006) 6263–6271.
[16]. Yesilgul U., Şakiroglu S., Kasapoglu E., Sari H., Sökmen I., The effects of temperature and hydrostatic pressure on the photoionization cross-section and binding energy of impurities in quantum-well wires, Superlattices and Microstructures 48 (2010) 106-113.
[17]. Al-Hayek I., Sandouqa A. S. , Energy and binding energy of donor impurity in quantum dot with Gaussian confinement, Superlattices and Microstructures 85 (2015) 216–225.
[18]. Zhang C., Wang Z. Liu Y., Guo K., Binding energy of shallow donor impurity in asymmetric quantum wells, Physica E 43 (2010) 372–374.
[19]. Hayrapetyana D.B., Ohanyana G.L., Baghdasaryana D.A., Sarkisyana H.A., Baskoutas S., Kazaryana E.M., Binding energy and photoionization cross-section of hydrogen-like donor impurity in strongly oblate ellipsoidal quantum dot, Physica E 95 (2018) 27–31.
[20]. Tshipa M., Winkoun D.P., Nijegorodov N., Masale M., Donor impurity binding energies of coaxial GaAs/AlGaAs cylindrical quantum wires in a parallel applied magnetic field, Superlattices and Microstructures 116 (2018) 227-237.