Intrinsic vacancy suppression and band convergence to enhance thermoelectric performance of (Ge, Bi, Sb)Te crystals
Sign Up to like & getrecommendations! Published in 2022 at "Chemical Engineering Journal"
DOI: 10.1016/j.cej.2021.132275
Abstract: Abstract GeTe-based alloys have drawn increasing attention because of the excellent thermoelectric (TE) performance and potential applications in mid-temperature range. Although reducing carrier concentration by aliovalent doping plays an important role in maximizing the TE… read more here.
Keywords: thermoelectric performance; suppression; band convergence; performance ... See more keywords
Enhanced thermoelectric properties of Sn-rich quaternary Mg2Si0.25Ge0.05Sn0.7 based solid solutions by band convergence in addition to scattering of point defects
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Solid State Chemistry"
DOI: 10.1016/j.jssc.2018.12.052
Abstract: Abstract Quaternary Mg2Si0.25Ge0.05Sn0.7 based solid solutions were synthesized by B2O3 flux method combined with spark plasma sintering (SPS) technique. The carrier concentration was tuned by adjustment of the SPS temperature. The electrical conductivity, Seebeck coefficient… read more here.
Keywords: 25ge0 05sn0; quaternary mg2si0; solid solutions; band convergence ... See more keywords
High thermoelectric performance in (Bi0.25Sb0.75)2Te3 due to band convergence and improved by carrier concentration control
Sign Up to like & getrecommendations! Published in 2017 at "Materials Today"
DOI: 10.1016/j.mattod.2017.02.007
Abstract: Bi_2Te_3 has been recognized as an important cooling material for thermoelectric applications. Yet its thermoelectric performance could still be improved. Here we propose a band engineering strategy by optimizing the converging valence bands of Bi_2Te_3… read more here.
Keywords: band; thermoelectric performance; band convergence; carrier concentration ... See more keywords
Enhancement of Thermoelectric Performance in Na-Doped Pb0.6Sn0.4Te0.95- xSe xS0.05 via Breaking the Inversion Symmetry, Band Convergence, and Nanostructuring by Multiple Elements Doping.
Sign Up to like & getrecommendations! Published in 2018 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.7b18362
Abstract: Topological insulators have attracted much interest in topological states of matter featuring unusual electrical conduction behaviors. It has been recently reported that a topological crystalline insulator could exhibit a high thermoelectric performance by breaking its… read more here.
Keywords: 6sn0 4te0; pb0 6sn0; band convergence; band ... See more keywords
Interstitial Defects Improving Thermoelectric SnTe in Addition to Band Convergence
Sign Up to like & getrecommendations! Published in 2017 at "ACS energy letters"
DOI: 10.1021/acsenergylett.6b00671
Abstract: SnTe, as a top Pb-free alternative to PbTe, attracts extensive attention for thermoelectric applications. For thermoelectric performance enhancement, successful electronic strategies are typified by band convergence and resonant doping, while effective thermal strategies include nanostructuring… read more here.
Keywords: defects improving; snte; interstitial defects; band convergence ... See more keywords
When band convergence is not beneficial for thermoelectrics
Sign Up to like & getrecommendations! Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-021-23839-w
Abstract: Band convergence is considered a clear benefit to thermoelectric performance because it increases the charge carrier concentration for a given Fermi level, which typically enhances charge conductivity while preserving the Seebeck coefficient. However, this advantage… read more here.
Keywords: band convergence; convergence beneficial; interband scattering; beneficial thermoelectrics ... See more keywords