Investigation of potential profile effects in quantum dot and onion-like quantum dot-quantum well on optical properties
Optics Communications, cilt.318, ss.26-30, 2014 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 318
- Basım Tarihi: 2014
- Doi Numarası: 10.1016/j.optcom.2013.12.046
- Dergi Adı: Optics Communications
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.26-30
- Anahtar Kelimeler: Finite element method (FEM), Quantum dot (QD), Quantum dot-quantum well (QDQW), Simulation
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Hayır
Özet
This paper investigates GaAs/AlGaAs modified quantum dot nanocrystal and GaAs/AlGaAs/GaAs/AlGaAs quantum dot-quantum well heteronanocrystal. These quantum dots have been analyzed by the finite element numerical methods. Simulations carried out for state n=1, l=0, and m=0 which are original, orbital, and magnetic state of quantum numbers. The effects of variation in radius layers such as total radius, GaAs core, shell and AlGaAs barriers radius on the wavelength and emission coefficient are studied. For the best time, it has also investigated the effect of mole fraction on emission coefficient. Meanwhile, one of the problems in biological applications is alteration of the emission wavelength of a quantum dot by changing in its dimension. This problem will be resolved by changing in potential profile. © 2013 Elsevier B.V.