High thermoelectric performance
WebJun 2, 2009 · With the aid of a significant enhancement in the thermopower, the dually doped oxide shows thermoelectric figure of merit values, ZT, values of 0.47 at 1000 K and 0.65 at 1247 K at the composition Zn 0.96 Al 0.02 Ga 0.02 O. These results appear to be the highest ZT values so far reported for bulk n -type oxides. Web14 hours ago · However, wide band-gap materials have been reported to possess high transparency but low thermoelectric performance owing to a high electrical resistivity. Doping is a good way to improve the electrical properties. For thermoelectric-based doped ZnO materials, the dopant substitution of Al, Ga, or In (group IIIA) into the Zn site (group …
High thermoelectric performance
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WebThis high power factor originates from the noticeably improved mobility, which is due to the variation in the carrier scattering mechanism. Tamaki et al. reported n-type Mg 3 Sb 2-based materials with high thermoelectric performance via introducing extra Mg and Te doping, and similar results were also reported by Zhang et al. . WebFeb 13, 2024 · Here, we report an all-transparent n-type charge transfer complex [ZnBr 2 (Br-C 6 H 4 -NH 2 ) 2 ] with an ultra-wide band gap of 4.25 eV (~ 163 k B T ). This material exhibits an ultrahigh ...
WebMar 11, 2012 · This unusual combination of properties leads to an ideal thermoelectric material. The results indicate a new strategy and direction for high-efficiency thermoelectric materials by exploring... WebDec 5, 2016 · A thermoelectric figure of merit zT as high as ~1.7 is found inherent to this compound when it is optimally doped with a Hall carrier concentration of 2.2±10% ×1020 cm-3, offering a reference ...
WebCompact Laser with Active/Passive Cooling for LADAR Applications. Amount: $69,387.00. Marlow Industries (MI) proposes a hybrid thermoelectric cooler and phase change … WebMay 12, 2024 · This work greatly broadens the commercial application potential of n-type Bi 2 Te 2.5 Se 0.5, and demonstrates magneto-trapped carrier effect as a universal strategy to enhance the electro-thermal conversion performance of TE materials with high carrier concentration. Zh 摘要在同一尺度协同调控非笼状结构热电材料载流子输运和声子输运面 …
WebFor example, elemental tellurium (Te) has exhibited a degraded zT of ∼1 for several years although it has gained considerable attention as a potential high-performance thermoelectric material. In this study, we demonstrate an unprecedentedly high zT of 1.42 at 623 K for 1% Fe2As-doped elemental Te crystals by utilizing the doping-induced ...
WebApr 1, 2024 · High TE property needs high Seebeck coefficient, high electrical conductivity, and low thermal conductivity. However, it is very hard to independently optimize those three TE performance parameters because they are intercoupled. crypt in frenchWebOct 18, 2016 · Ideal thermoelectric materials should possess a high dimensionless figure of merit, ZT, defined as ZT = S2T / ρ ( κe + κL ), where S is the Seebeck coefficient, T is the absolute temperature, ρ is the electronic resistivity, and κe and κL are the carrier and lattice thermal conductivity, respectively. [ 1, 3] Majority of IV–VI compounds tend to … dup offices belfastWebThis effect was combined with low thermal conductivity achieved through phonon scattering at the interfaces of finely structured multiphase compounds and resulted in a relatively … dup officesWebThermoelectric materials which can convert heat energy to electricity rely on crystalline inorganic solid state compounds exhibiting low phonon transport (i.e. low thermal conductivity) without much inhibiting the electrical transport.Suppression of phonons traditionally has been carried out via extrinsic pathways, involving formation of point … crypt inflationWebApr 10, 2024 · High electrical contact resistance refrains the performance of thin-film thermoelectric devices at the demonstrative level. Here, an additional Ti contact layer is … crypting on structureWebThis effect was combined with low thermal conductivity achieved through phonon scattering at the interfaces of finely structured multiphase compounds and resulted in a relatively high thermoelectric figure of merit of ∼0.7 over the 300-550 K temperature range for the multiphase sample of n-type Bi 2 Te 2.75 S 0.25, double the efficiency of ... crypt in biologyWebFor example, elemental tellurium (Te) has exhibited a degraded zT of ∼1 for several years although it has gained considerable attention as a potential high-performance … cryptingup