Asimetrik Yarı-Üstel Kuantum Kuyularındaki Safsızlıkların Bağlanma Enerjisi

Yıl 2018, Cilt: 39 Sayı: 4, 1015 - 1019, 24.12.2018

Ünal Yeşilgül

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

Öz

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.

Anahtar Kelimeler

Kuantum kuyusu, safsızlık

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

Öz

Within the framework of effective-mass and envelope wave function
approach, using a variational method, we have investigated the binding energy
of shallow-donor impurities in an asymmetrical semi-exponential quantum wells
(ASEQW). The obtained numerical
results show that the structure parameters (σ and, V₀) lead to
significant changes in the impurity binding energy. Furthermore, these results
show that the hydrogenic donor impurity binding energy may be increased or
decreased as a function of the impurity position in quantum well.

Anahtar Kelimeler

Quantum well, impurity

Kaynakça

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