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@ARTICLE{Spirito:903470,
author = {Spirito, Davide and von den Driesch, Nils and Manganelli,
Costanza Lucia and Zoellner, Marvin Hartwig and
Corley-Wiciak, Agnieszka Anna and Ikonic, Zoran and Stoica,
Toma and Grützmacher, Detlev and Buca, Dan Mihai and
Capellini, Giovanni},
title = {{T}hermoelectric {E}fficiency of {E}pitaxial {G}e{S}n
{A}lloys for {I}ntegrated {S}i-{B}ased {A}pplications:
{A}ssessing the {L}attice {T}hermal {C}onductivity by
{R}aman {T}hermometry},
journal = {ACS applied energy materials},
volume = {4},
number = {7},
issn = {2574-0962},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {FZJ-2021-05142},
pages = {7385 - 7392},
year = {2021},
abstract = {Energy harvesting for Internet of Things
applications,comprising sensing, life sciences, wearables,
and communications, requiresefficient thermoelectric (TE)
materials, ideally semiconductors compatiblewith Si
technology. In this work, we investigate the potential of
GeSn/Gelayers, a group IV material system, as TE material
for low-grade heatconversion. We extract the lattice thermal
conductivity, by developing ananalytical model based on
Raman thermometry and heat transport model,and use it to
predict thermoelectric performances. The lattice
thermalconductivity decreases from 56 W/(m·K) for Ge to 4
W/(m·K) byincreasing the Sn atomic composition to $14\%.$
The bulk cubic Ge0.86Sn0.14alloy features a TE figure of
merit of ZT ∼ 0.4 at 300 K and an impressive1.04 at 600 K.
These values are extremely promising in view of the use
ofGeSn/Ge layers operating in the typical on-chip
temperature range.},
cin = {PGI-9 / JARA-FIT},
ddc = {540},
cid = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$},
pnm = {5234 - Emerging NC Architectures (POF4-523)},
pid = {G:(DE-HGF)POF4-5234},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000678382900105},
doi = {10.1021/acsaem.1c01576},
url = {https://juser.fz-juelich.de/record/903470},
}