Journal Article

FZJ-2015-06712

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Temperature dependent recombination dynamics in InP/ZnS colloidal nanocrystals

Shirazi, R. ; Kopylov, O. ; Kovacs, A. ; Kardynal, B.FZJ*

2012
AIP74335 New York, NY

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Please use a persistent id in citations: doi:10.1063/1.4749276

Abstract: 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.

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)
2. JARA-FIT (JARA-FIT)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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