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@ARTICLE{Shira:187358,
author = {Shira, Roza and Kovacs, Andras and Dan Corell, Dennis and
Gritti, Claudia and Thorseth, Anders and Dam-Hansen, Carsten
and Petersen, Paul Michael and Kardynal, Beata},
title = {{O}rigin of low quantum efficiency of photoluminescence of
{I}n{P}/{Z}n{S} nanocrystals},
journal = {Journal of luminescence},
volume = {145},
issn = {0022-2313},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2015-01029},
pages = {936-939},
year = {2014},
abstract = {In this paper, we study the origin of a strong wavelength
dependence of the quantum efficiency of InP/ZnS
nanocrystals. We find that while the average size of the
nanocrystals increased by $50\%,$ resulting in longer
emission wavelength, the quantum efficiency drops more than
one order of magnitude compared to the quantum efficiency of
the small nanocrystals. By correlating this result with the
time-resolved photoluminescence we find that the reduced
photoluminescence efficiency is caused by a fast growing
fraction of non-emissive nanocrystals while the quality of
the nanocrystals that emit light is similar for all samples.
Transmission electron microscopy reveals the polycrystalline
nature of many of the large nanocrystals, pointing to the
grain boundaries as one possible site for the
photoluminescence quenching defects.},
cin = {PGI-5 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)PGI-5-20110106 / $I:(DE-82)080009_20140620$},
pnm = {42G - Peter Grünberg-Centre (PG-C) (POF2-42G41)},
pid = {G:(DE-HGF)POF2-42G41},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000330821200152},
doi = {10.1016/j.jlumin.2013.09.013},
url = {https://juser.fz-juelich.de/record/187358},
}