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Shallow donor insid...
Shallow donor inside core/shell spherical nanodot : Effect of nanostructure size and dielectric environment on energy spectrum
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- Chafai, A. (författare)
- Univ Moulay Ismail, Phys Dept, Fac Sci, Unite Associee CNRST URAC 08,LP2MS, Meknes, Morocco.
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- Dujardin, F. (författare)
- Univ Lorraine, LCP A2MC, Inst Chim Phys & Mat, 1 Bd Arago, F-57070 Metz, France.
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- Essaoudi, I. (författare)
- Uppsala universitet,Materialteori,Univ Moulay Ismail, Phys Dept, Fac Sci, Unite Associee CNRST URAC 08,LP2MS, Meknes, Morocco
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- Ainane, A. (författare)
- Uppsala universitet,Materialteori,Univ Moulay Ismail, Phys Dept, Fac Sci, Unite Associee CNRST URAC 08,LP2MS, Meknes, Morocco.;Univ Lorraine, LCP A2MC, Inst Chim Phys & Mat, 1 Bd Arago, F-57070 Metz, France
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- Ahuja, Rajeev, 1965- (författare)
- Uppsala universitet,Materialteori
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Univ Moulay Ismail, Phys Dept, Fac Sci, Unite Associee CNRST URAC 08,LP2MS, Meknes, Morocco Univ Lorraine, LCP A2MC, Inst Chim Phys & Mat, 1 Bd Arago, F-57070 Metz, France. (creator_code:org_t)
- Elsevier BV, 2017
- 2017
- Engelska.
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Ingår i: Superlattices and Microstructures. - : Elsevier BV. - 0749-6036 .- 1096-3677. ; 111, s. 976-982
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We have reported the impact of the core and shell radii on the energy spectrum of centered shallow donor confined inside CdSe/ZnTe core/shell quantum dot and ZnTe/CdSe inverted core/shell quantum dot. The dielectric discontinuity between the nanosystems and their surrounding medium was considered. In order to examine the behavior of the donor binding energy as a function of the spatial parameters a variational approach within the framework of the effective-mass approximation was deployed. Our model shows that for a fixed shell radius the increase of the core radius value blue-shifts the binding energy of the donor inside inverted core/shell quantum dot only if the value of the core to shell radii ratio is between 0.9 and 1, otherwise it is red-shifted. By contrast, for core/shell quantum dot system the binding energy is red-shifted by increasing the core radius for a fixed nanostructure size and for all values of the core to shell radii ratio. We have also found that the donor binding energy values are more important in a core/shell nanodot than in an inverted core/shell quantum dot.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Shallow donor
- Core/shell materials
- Nanostructures
- Quantum dots
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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