TY  - JOUR
AU  - Shirazi, R.
AU  - Kopylov, O.
AU  - Kovacs, A.
AU  - Kardynal, Beata
TI  - Temperature dependent recombination dynamics in InP/ZnS colloidal nanocrystals
JO  - Applied physics reviews
VL  - 101
IS  - 9
SN  - 0003-6951
CY  - New York, NY
PB  - AIP74335
M1  - FZJ-2015-06712
SP  - 091910 -
PY  - 2012
AB  - In this letter, we investigate exciton recombination in InP/ZnS core-shell colloidalnanocrystals over a wide temperature range. Over the entire range between room temperature and liquid helium temperature, multi-exponential exciton decay curves are observed and well explained by the presence of bright and dark exciton states, as well as defect states. Two different types of defect are present: one located at the core-shell interface and the other on the surface of the nanocrystal. Based on the temperature dependent contributions of all four states to the total photoluminescence signal, we estimate that the four states are distributed within a 20 meV energy band in nanocrystals that emit at 1.82 eV.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000308408100027
DO  - DOI:10.1063/1.4749276
UR  - https://juser.fz-juelich.de/record/276249
ER  -