Abstract
We demonstrate the potential of metallurgical controlling of the phase separation reaction, by means of spark plasma sintering consolidation and subsequently controlled heat treatments sequence, for enhancement the thermoelectric properties of the p-type Ge0.87Pb0.13Te composition. Very high ZTs of up to ∼2, attributed to the nucleation of sub-micron phase separation domains and to comparable sized twinning and dislocation networks features, were observed. Based on the experimentally measured transport properties, combined with the previously reported phase separated n-type (Pb0.95Sn0.05Te)0.92(PbS) 0.08 composition, a maximal efficiency value of ∼11.5% was theoretically calculated. These ZT and efficiency values are among the highest reported for single composition non-segmented bulk material legs.
| Original language | English |
|---|---|
| Pages (from-to) | 815-820 |
| Number of pages | 6 |
| Journal | Advanced Energy Materials |
| Volume | 3 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 2013 |
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Keywords
- GeTe
- PbTe
- phase separation
- thermoelectric
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
Controlling metallurgical phase separation reactions of the Ge 0.87Pb0.13Te alloy for high thermoelectric performance. / Gelbstein, Yaniv; Davidow, Joseph; Girard, Steven N.; Chung, Duck Young; Kanatzidis, Mercouri G.
In: Advanced Energy Materials, Vol. 3, No. 6, 06.2013, p. 815-820.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Controlling metallurgical phase separation reactions of the Ge 0.87Pb0.13Te alloy for high thermoelectric performance
AU - Gelbstein, Yaniv
AU - Davidow, Joseph
AU - Girard, Steven N.
AU - Chung, Duck Young
AU - Kanatzidis, Mercouri G
PY - 2013/6
Y1 - 2013/6
N2 - We demonstrate the potential of metallurgical controlling of the phase separation reaction, by means of spark plasma sintering consolidation and subsequently controlled heat treatments sequence, for enhancement the thermoelectric properties of the p-type Ge0.87Pb0.13Te composition. Very high ZTs of up to ∼2, attributed to the nucleation of sub-micron phase separation domains and to comparable sized twinning and dislocation networks features, were observed. Based on the experimentally measured transport properties, combined with the previously reported phase separated n-type (Pb0.95Sn0.05Te)0.92(PbS) 0.08 composition, a maximal efficiency value of ∼11.5% was theoretically calculated. These ZT and efficiency values are among the highest reported for single composition non-segmented bulk material legs.
AB - We demonstrate the potential of metallurgical controlling of the phase separation reaction, by means of spark plasma sintering consolidation and subsequently controlled heat treatments sequence, for enhancement the thermoelectric properties of the p-type Ge0.87Pb0.13Te composition. Very high ZTs of up to ∼2, attributed to the nucleation of sub-micron phase separation domains and to comparable sized twinning and dislocation networks features, were observed. Based on the experimentally measured transport properties, combined with the previously reported phase separated n-type (Pb0.95Sn0.05Te)0.92(PbS) 0.08 composition, a maximal efficiency value of ∼11.5% was theoretically calculated. These ZT and efficiency values are among the highest reported for single composition non-segmented bulk material legs.
KW - GeTe
KW - PbTe
KW - phase separation
KW - thermoelectric
UR - http://www.scopus.com/inward/record.url?scp=84878627203&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84878627203&partnerID=8YFLogxK
U2 - 10.1002/aenm.201200970
DO - 10.1002/aenm.201200970
M3 - Article
VL - 3
SP - 815
EP - 820
JO - Advanced Energy Materials
JF - Advanced Energy Materials
SN - 1614-6832
IS - 6
ER -