Back to Search
Start Over
Exciton states of quantum confined ZnO nanorods
- Source :
-
Chemical Physics Letters . Sep2008, Vol. 462 Issue 1-3, p100-103. 4p. - Publication Year :
- 2008
-
Abstract
- Abstract: Photoluminescence (PL) of zinc oxide (ZnO) nanorods with an average thickness of 5nm and a length of 30nm is blue-shifted compared to the bulk due to quantum confinement effects. The exciton states remain relatively stable at a high carrier density due to a smaller exciton size and an enhanced exciton binding energy in the quantum confined nanorods, whereas the electron-hole plasma states are formed in the bulk at the similar carrier density. A linear dependence of the PL intensity on the excitation intensity also corroborates the assumption that the stable exciton states are responsible for the undisturbed emission at a high carrier density. [Copyright &y& Elsevier]
- Subjects :
- *EXCITON theory
*ZINC oxide
*PHOTOLUMINESCENCE
*NANOSTRUCTURED materials
Subjects
Details
- Language :
- English
- ISSN :
- 00092614
- Volume :
- 462
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- Chemical Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 33998091
- Full Text :
- https://doi.org/10.1016/j.cplett.2008.07.079