Journal
ACS NANO
Volume 4, Issue 1, Pages 91-98Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn9010279
Keywords
nanostructure; nanorod; ab initio calculations; core/shell; quantum confinement
Categories
Funding
- National Science Foundation of China [20873009]
- U.S. Department of Energy, BES/SC [DE-AC02-05CH11231]
Ask authors/readers for more resources
The electronic structures of the CdSe/CdS core-shell nanorods are systemically investigated by large-scale first-principles quality calculations. The effects of band alignment, quantum confinement, piezoelectric field, and dipole moments are analyzed and delineated by comparing the results of systems with or without some of these attributes. We found complicated interplays between these effects in determining the nanorod band gap and electron hole wave function localizations. The hole wave function is found to be localized inside the CdSe core, while the electron wave function is localized in the CdS shell, with its distance to the CdSe core depending on the surface passivation; The permanent dipole moment induced by different surface passivations can change the electron hole separation; while the piezoelectric effect plays a relatively minor role. Finally, we demonstrate that it is straightforward to manipulate the nanorod electronic structure by changing its CdSe core position.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available