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@ARTICLE{Rainko:859840,
author = {Rainko, Denis and Ikonic, Zoran and Elbaz, Anas and von den
Driesch, Nils and Stange, Daniela and Herth, Etienne and
Boucaud, Philippe and El Kurdi, Moustafa and Grützmacher,
Detlev and Buca, Dan Mihai},
title = {{I}mpact of tensile strain on low {S}n content {G}e{S}n
lasing},
journal = {Scientific reports},
volume = {9},
number = {1},
issn = {2045-2322},
address = {[London]},
publisher = {Macmillan Publishers Limited, part of Springer Nature},
reportid = {FZJ-2019-00662},
pages = {259},
year = {2019},
abstract = {In recent years much effort has been made to increase the
Sn content in GeSn alloys in order to increasedirect bandgap
charge carrier recombination and, therefore, to reach room
temperature lasing.While being successful for the former,
the increase of Sn content is detrimental, leading to
increaseddefect concentrations and a lower thermal budget
regarding processing. In this work we demonstratestrong
photoluminescence enhancement in low Sn content Ge0.94Sn0.06
layers by implementing tensilestrain. Fitting of the
calculated photoluminescence spectra to reproduce our
experimental resultsindicates a strain of $~1.45\%,$ induced
via an SiNx stressor layer, which is strong enough to
transform theinvestigated layer into a direct bandgap
semiconductor. Moreover, theoretical calculations, using
the8-band k·p model, show the advantages of using low Sn
content tensile strained GeSn layers in respectto gain and
lasing temperature. We show that low Sn content GeSn alloys
have a strong potential toenable efficient room temperature
lasers on electronic-photonic integrated circuits.},
cin = {PGI-9 / JARA-FIT / PGI-10},
ddc = {600},
cid = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$ /
I:(DE-Juel1)PGI-10-20170113},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30670785},
UT = {WOS:000456282100014},
doi = {10.1038/s41598-018-36837-8},
url = {https://juser.fz-juelich.de/record/859840},
}