Enhancement of Thermoelectric Performance in CuSbSe2 Nanoplate‐Based Pellets by Texture Engineering and Carrier Concentration Optimization
Year: 2018
Type: article
Abstract: This work reports the thermoelectric properties of the CuSbSe2‐x mol% PtTe2 (x = 0, 0.5, 1.0, 1.5, and 2.0) pellets composed of highly oriented single crystalline nanoplates. CuSbSe2‐PtTe2 single crystalline nanoplates are prepared by a wet‐chemical process, and the pellets are prepared through a bottom‐up self‐assembly of the CuSbSe2‐PtTe2 nanoplates and spark plasma sintering (SPS) process. X‐ray diffraction and field emission scanning electron microscopic analyses show a highly textured nature with an orientation factor of ≈0.8 for (00l) facets along the primary surface of the pellets (in‐plane, perpendicular to the SPS pressure). By this way, bulk‐single‐crystal‐like electrical and thermal transport properties with a strong anisotropy are obtained, which results in an effective optimization on thermoelectric performance. The maximum in‐plane thermoelectric figure‐of‐merit ZT value reaches 0.50 at 673 K for CuSbSe2‐2.0 mol% PtTe2 pellet, which is about five times higher than the in‐plane ZT (0.10) for pure CuSbSe2.
Source: Small
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, U.S. Department of Energy, W. M. Keck Foundation, Northwestern University, Nanyang Technological University, National Natural Science Foundation of China, Ministry of Education, India, Office of Science, Materials Research Science and Engineering Center, Harvard University, International Institute for Nanotechnology, Northwestern University, Division of Materials Research, Division of Electrical, Communications and Cyber Systems, Basic Energy Sciences
Awards: G102163711, G1169090945, G1196738135, G1276186940, G1286236842, G1286251239, G1329306526, G1505794299, G1722293261, G1863003419, G2101401529, G2137585358, G2287611682, DESIGN OF NEXT GENERATION THERMOELECTRICS, G2618837358, G262962599, G2957909767, G3048563442, G3069893454, G30714459, G3083819904, G336680401, G3454132534, G3589692066, G3954585026, G3955519432, G3967535168, G419881185, G426311843, G4285583887, G4289625387, G42916606, G4433393426, G4501827968, MRSEC: Center for Multifunctional Materials, G4796240486, G4912152698, G498139845, G5106849484, G513797252, G5218300437, G5387317844, G5793179256, DESIGN OF NEXT GENERATION THERMOELECTRICS, NNCI: Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource, G5910536577, G650090426, G6652958823, G6848031779, G6918803902, G704498496, G7182634401, G7304483037, G7368700025, G7570481651, G7583137537, G7921942818, G801469781, G8073314406, G8230932042, G8483879465, G880751848, G969889393, G993149817
OpenAlex ID: W2898496582