We synthesized colloidal CdSe nanocrystals through solution process. Nanocrystals showed quantum confinement effects well in solution form. The CdSe nanocrystals coated on Si(1 0 0) wafers were vacuum annealed and analyzed in situ using X-ray absorption and photoelectron spectroscopy to investigate the electronic energy structure of CdSe nanocrystals. As nanocrystalline solids were annealed at high temperature, the absorption edge of Cd M level and valence band maximum of CdSe decreased as the core level binding energy of Cd 3d. In addition, a red shift with the increase of annealing temperature was also confirmed by the photoluminescence observation of CdSe nanocrystals on glass substrate.
|Number of pages||4|
|Journal||Applied Surface Science|
|Publication status||Published - 2005 May 15|
|Event||12th International Conference on Solid Films and Surfaces - Hammatsu, Japan|
Duration: 2004 Jun 21 → 2004 Jun 25
Bibliographical noteFunding Information:
The authors wish to acknowledge the financial support from KISTEP (M1-0214-00-0228). The experiments at PLS were supported in part by MOST and POSTECH.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films