Synthesis and thermoelectric properties of the PbSe1−xTex alloys

Microstructure and thermoelectric properties of β-FeSi2 ceramics fabricated by hot-pressing and spark plasma sintering

“…As well known, the high TE conversion efficiency strongly depends on the performance of TE materials, which is denoted by the TE figure of merit of the materials [1,2]. The figure of merit is defined as ZT = ˛2 T/Ä, where T is absolute temperature, is the electrical conductivity, ˛ is the Seebeck coefficient, and Ä = Ä l + Ä e is the thermal conductivity composed of electronic and lattice parts [3,4]. Thus, excellent TE materials impose high , high ˛ and low Ä.…”

“…This is possible because of the low heating rates used and long sintering time is required to obtain full dense ceramics. Fortunately, the recent use of spark plasma sintering has provided many successful examples in the preparation of highly dense nanostructured ceramics [3,11]. This technique offers a unique combination of rapid heating/cooling and shorter processing time, which makes it consolidate nanopowders and retain nanostructures [12].…”

High temperature thermoelectric properties and energy transfer devices of Ca3Co4−xAgxO9 and Ca1−ySmyMnO3

“…Therefore, considerable efforts have been dedicated to the investigation of TE materials in the past decades. In comparison to conventional TE materials, such as Bi 2 Te 3 [7][8][9][10][11][12] and PbTe [13][14][15] based alloys, high-temperature oxide TE materials, including Ca 3 Co 4 O 9 [16][17][18][19][20], NaCoO 2 [21][22][23][24], Li-doped NiO [25], CaMnO 3 [26][27][28][29], and SrTiO 3 [30], are of particular interest to researchers as a result of their high TE performance, nontoxic nature and high thermal and chemical stability.…”

Theoretical investigation of geometries, stabilities, electronic and optical properties for advanced Agn@(ZnO)42 (n=6-18) hetero-nanostructure

“…Over the past several years, the core-shell heterogeneous nanoparticles with tunable composition and morphology exhibit multiple functionalities and even novel properties, thus achieving potential applications in various fields such as electronics, [1][2][3] creating photonic crystals, 4 enhancing photoluminescence, [5][6][7] catalysis, 8,9 etc. Core-shell architecture can avoid exposing the inner core to the environment and maximize the interaction between the building blocks.…”