Asimetrik Yarı-Üstel Kuantum Kuyularındaki Safsızlıkların Bağlanma Enerjisi

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.

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

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.

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