英语翻译However,high resolution energy dispersive spectroscopy (

英语翻译
However,high resolution energy dispersive spectroscopy (EDS) analysis on these nanoprecipitates
suggests that when CdS/ZnS is introduced into the PbSe matrix,they change the composition and become solid solutions of the type CdS1x03xSex/ZnS1x03xSex.This happens via an
interfacial reaction between the sulde matrix and the selenide second phase.We call these compositionally alloyed nanostructures.When this happens the valence band energy levels for
CdS1x03xSex/ZnS1x03xSex are intermediate between those of CdS/ZnS and CdSe/ZnSe (though not necessarily linear in x; Fig.10(b) is only a schematic illustration).This effect achieves excellent
energy level alignments (minimal offset) with the PbSe matrix.This is also supported by the DFT calculations which suggest that the valence band energy of CdS0.9Se0.1 lies between those of CdS
and CdSe.16
This is a new type of band-offset engineering that takes advantage of the electronic bands of the compositionally alloyed nanostructures.The second phase nanostructures react
with the matrix to become alloyed so that the two band energies in each phase get closer in energy,see eqn (2).Because of the small concentration of the second phase (usually a few mole%)
the perturbation of the alloying action on the electronic structure of the matrix is negligible,but it is substantial for that of the second phase