Abstract
Correlation between the size-enlarged Stokes shift and band-gap expansion of Si and Ge nanocrystals has been investigated in terms of the bond order–length–strength correlation. It is shown that the bond order deficiency of surface atoms dictates electron– phonon coupling and crystal binding, and enhances the size dependence of the observed blue shift in photoemission and photoabsorption of Si and Ge nanocrystals. Compared with Si, Ge nanocrystal exhibits stronger electron–phonon coupling due to larger phonon-induced deformation of the crystal lattice.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
