A detailed investigation of electronic and intersubband optical properties of AlxGa(1-x)As/Al0.3Ga0.7As/AlyGa1-yAs/Al0.3Ga0.7As multi-shell quantum dots
Küçük Resim Yok
Tarih
2014
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IOP PUBLISHING LTD
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, we have investigated the electronic and intersubband optical properties of Al x Ga1-x As/Al0.3Ga0.7As/Al y Ga1-y As/Al0.3Ga0.7As multi-shell quantum dot heterostructures as a function of the Al doping concentrations in both the core (x) and the well (y) regions for cases with and without a hydrogenic donor impurity. Our results reveal how resonant absorption wavelengths and absorption coefficient strengths are changed by variation of the Al content in the core (x) and well (y) regions. Besides this, how the electronic and intersubband optical properties of this structure are affected by the existence of the impurity has also been shown. The physical reasons for this relationship between the electronic and optical properties of this structure and the Al content in the core and well regions have been discussed in detail.
Açıklama
Anahtar Kelimeler
multi-shell quantum dot, intersubband transition, oscillator strength, absorption coefficient
Kaynak
JOURNAL OF PHYSICS D-APPLIED PHYSICS
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
47
Sayı
29