- Tytuł:
- CdSe/ZnS Colloidal Quantum Dots with Alloyed Core/Shell Interfaces: A Photoluminescence Dynamics Study
- Autorzy:
-
Dziatkowski, K.
Ratchford, D.
Hartsfield, T.
Li, X.
Gao, Y.
Tang, Z. - Powiązania:
- https://bibliotekanauki.pl/articles/1492859.pdf
- Data publikacji:
- 2011-11
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
78.67.Hc
78.47.jd
78.55.Et - Opis:
- Time-resolved photon counting technique was employed to study dynamics of photoluminescence from the ensemble and single CdSe/ZnS quantum dots with the alloyed core/shell interfaces. The ensemble data revealed enhanced effect of disorder-induced trap states for increasing emission energy, as implied from the changes in the distribution of total decay rates. The emission trajectories collected for single quantum dots showed familiar, two-state blinking pattern. It suggests that in a large-band-offset CdSe/ZnS system, the introduced alloying of the core-to-shell region cannot smooth enough the confinement potential in order to suppress nonradiative Auger recombination and blinking.
- Źródło:
-
Acta Physica Polonica A; 2011, 120, 5; 870-873
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł