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Czasopismo
2010 | 8 | 3 | 438-444
Tytuł artykułu

Photoionization cross section and refractive-index change of hydrogenic impurities in a CdS-SiO2 spherical quantum dot

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In this study, we calculate the photoionization cross section and refractive-index change of an on-center hydrogenic impurity in a CdS-SiO2 spherical quantum dot. In numerical calculations, both the finite- and infinite-confinement cases are considered and a variational scheme is adopted to determine the energy eigenvalues for the impurity. The variations of the photoionization cross section with the dot radius, the refractive-index change, and the normalized photon energy are investigated, and the effect of the potential-barrier height on the cross section is discussed. The results obtained show that the photoionization cross section and the refractive-index change in CdS-SiO2 spherical quantum dots are sensitively dependent on the incident optical intensity and on the dot sizes.
Wydawca

Czasopismo
Rocznik
Tom
8
Numer
3
Strony
438-444
Opis fizyczny
Daty
wydano
2010-06-01
online
2010-04-24
Twórcy
autor
  • Faculty of Literature and Sciences, Department of Physics, Bozok University, 66200, Yozgat, Turkey, yilmazs@erciyes.edu.tr
autor
  • Faculty of Literature and Sciences, Department of Physics, Selçuk University, 42075, Konya, Turkey
  • Faculty of Literature and Sciences, Department of Physics, Bozok University, 66200, Yozgat, Turkey
autor
  • Faculty of Literature and Sciences, Department of Physics, Bozok University, 66200, Yozgat, Turkey
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-009-0115-8
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