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Schematic of heterostructure NCs considered in this study: (a) core-shell nanoparticle, (b) core-shell nanowire, and (c) nanowire with an axial heterojunction.
Calculated enthalpy of mixing and lattice parameter (inset) of a homogeneous alloy as a function of CdSe composition for the wurtzite and zincblende phases. Also shown are the experimental values of the lattice parameter, taken from Ref. 7 .
Critical bulk mixing temperature above which the mixing reaction is expected to occur with all systems involved being either in the wurtzite or zincblende bulk phases.
Mixing temperature [Eq. (3) ] as a function of size for wurtzite heterostructure NCs containing equal mole fractions of CdSe and CdTe. The dashed line indicates the limiting mixing temperature for this composition.
Energy (in ) of various types of zincblende and wurtzite interfaces.
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