Effect of quantum confinement on the dielectric function of PbSe


Hens, Z. and Vanmaekelbergh, D. and Kooij, E.S. and Wormeester, H. and Allan, G. and Delerue, C. (2004) Effect of quantum confinement on the dielectric function of PbSe. Physical Review Letters, 92 (2). 026808. ISSN 0031-9007

open access
Abstract:Monolayers of lead selenide nanocrystals of a few nanometers in height have been made by electrodeposition on a Au(111) substrate. These layers show a thickness-dependent dielectric function, which was determined using spectroscopic ellipsometry. The experimental results are compared with electronic structure calculations of the imaginary part of the dielectric function of PbSe nanocrystals. We demonstrate that the size-dependent variation of the dielectric function is affected by quantum confinement at well-identifiable points in the Brillouin zone, different from the position of the band-gap transition.
Item Type:Article
Copyright:© 2004 The American Physical Society
Science and Technology (TNW)
Research Group:
Link to this item:http://purl.utwente.nl/publications/49023
Official URL:https://doi.org/10.1103/PhysRevLett.92.026808
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page

Metis ID: 220933