Lattice contraction in free-standing CdSe nanocrystals
by Zhang, J. Y.; Wang, X. Y.; Xiao, M.; Qu, L.; Peng, X.
Colloidal CdSe nanocrystals (NCs) with high photoluminescent quantum yield are fabricated by a method adopting a large initial Se:Cd ratio of the precursors in the solution. X-ray diffraction and Raman measurements confirm that there exists lattice contraction in the free-standing wurtzite CdSe NCs. The lattice contraction indicates the occurrence of surface optimization/reconstruction during the growth, which results in the high quantum yield of the obtained CdSe NCs.
- Journal
- Applied Physics Letters
- Volume
- 81
- Issue
- 11
- Year
- 2002
- Start Page
- 2076-2078
- URL
- https://dx.doi.org/10.1063/1.1507613
- ISBN/ISSN
- 1077-3118; 0003-6951
- DOI
- 10.1063/1.1507613