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@ARTICLE{vondenDriesch:874249,
author = {von den Driesch, Nils and Wirths, Stephan and Troitsch,
Rene and Mussler, Gregor and Breuer, Uwe and Moutanabbir,
Oussama and Grützmacher, Detlev and Buca, Dan},
title = {{T}hermally activated diffusion and lattice relaxation in
({S}i){G}e{S}n materials},
journal = {Physical review materials},
volume = {4},
number = {3},
issn = {2475-9953},
address = {College Park, MD},
publisher = {APS},
reportid = {FZJ-2020-01340},
pages = {033604},
year = {2020},
abstract = {Germanium-tin (GeSn) alloys have emerged as a promising
material for future optoelectronics, energy harvesting, and
nanoelectronics owing to their direct band gap and
compatibility with existing Si-based electronics. Yet, their
metastability poses significant challenges calling for
in-depth investigations of their thermal behavior. With this
perspective, this work addresses the interdiffusion
processes throughout thermal annealing of pseudomorphic GeSn
binary and SiGeSn ternary alloys. In both systems, the
initially pseudomorphic layers are relaxed upon annealing
exclusively via thermally induced diffusional mass transfer
of Sn. Systematic postgrowth annealing experiments reveal
enhanced Sn and Si diffusion regimes that manifest at
temperatures below 650 °C. The amplified low-temperature
diffusion and the observation of only subtle differences
between binary and ternary hint at the unique metastability
of the Si-Ge-Sn material system as the most important
driving force for phase separation.},
cin = {PGI-9 / ZEA-3 / PGI-10 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)ZEA-3-20090406 /
I:(DE-Juel1)PGI-10-20170113 / I:(DE-Juel1)VDB881},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000521131900001},
doi = {10.1103/PhysRevMaterials.4.033604},
url = {https://juser.fz-juelich.de/record/874249},
}