Nanograin Effects on the Thermoelectric Properties of Poly-Si Nanowires (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Nanograin Effects on the Thermoelectric Properties of Poly-Si Nanowires (Articolo in rivista) (literal)

Anno

• 2013-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1007/s11664-012-2424-8 (literal)

Alternative label

• Neophytou N, Zianni X, Ferri M, Roncaglia A, Cerofolini GF, Narducci D (2013)
  Nanograin Effects on the Thermoelectric Properties of Poly-Si Nanowires
  in Journal of electronic materials
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Neophytou N, Zianni X, Ferri M, Roncaglia A, Cerofolini GF, Narducci D (literal)

Pagina inizio

• 2393 (literal)

Pagina fine

• 2401 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 42 (literal)

Rivista

• Journal of electronic materials (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 9 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 7 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• [ 1 ] Vienna Univ Technol, Inst Microelect, A-1060 Vienna, Austria [ 2 ] Technol Educ Inst Chalkida, Dept Appl Sci, Psachna 34400, Greece [ 3 ] NCSR Demokritos, Inst Microelect, Athens 15310, Greece [ 4 ] CNR, IMM, I-40126 Bologna, Italy [ 5 ] Univ Milano Bicocca, Dept Mat Sci, I-20125 Milan, Italy [ 6 ] Consorzio DeltaTi Res, Milan, Italy (literal)

Titolo

• Nanograin Effects on the Thermoelectric Properties of Poly-Si Nanowires (literal)

Abstract

• In this work we perform a theoretical analysis of the thermoelectric performance of polycrystalline Si nanowires (NWs) by considering both electron and phonon transport. The simulations are calibrated with experimental data from monocrystalline and polycrystalline structures. We show that heavily doped polycrystalline NW structures with grain size below 100 nm might offer an alternative approach to achieve simultaneous thermal conductivity reduction and power factor improvements through improvements in the Seebeck coefficient. We find that deviations from the homogeneity of the channel and/or reduction in the diameter may provide strong reduction in the thermal conductivity. Interestingly, our calculations show that the Seebeck coefficient and consequently the power factor can be improved significantly once the polycrystalline geometry is properly optimized, while avoiding strong reduction in the electrical conductivity. In such a way, ZT values even higher than the ones reported for monocrystalline Si NWs can be achieved. (literal)

Prodotto di

• Sviluppo di tecnologie e realizzazione di dispositivi e microsistemi fotonici, fluidici e meccanici (MD.P05.011.001) (Modulo)
• Institute for microelectronics and microsystems (IMM) (Istituto)

Autore CNR

• ALBERTO RONCAGLIA (Persona)
• MATTEO FERRI (Persona)

Incoming links:

Prodotto

• Institute for microelectronics and microsystems (IMM) (Istituto)
• Sviluppo di tecnologie e realizzazione di dispositivi e microsistemi fotonici, fluidici e meccanici (MD.P05.011.001) (Modulo)

Autore CNR di

• ALBERTO RONCAGLIA (Persona)
• MATTEO FERRI (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of electronic materials (Rivista)