Type-II Quantum Dots: CdTe/CdSe(Core/Shell) and CdSe/ZnTe(Core/Shell) Heterostructures

We demonstrate that the spatial distribution of carriers can be controlled within the type-II quantum dots, which makes their properties strongly governed by the band offset of the comprising materials

Sungjee Kim; Brent Fisher; Hans-J├╝rgen Eisler; Moungi Bawendi

2003

Scholarcy highlights

  • Type-II band engineered quantum dots and CdSe/ZnTe(core/shell) heterostructures) are described
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  • The optical properties of these type-II quantum dots are studied in parallel with their type-I counterparts
  • We demonstrate that the spatial distribution of carriers can be controlled within the type-II quantum dots, which makes their properties strongly governed by the band offset of the comprising materials
  • The type-II quantum dots reported here can emit at lower energies than the band gaps of comprising materials
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