Improved thermoelectric performance of p-type Bi0.5Sb1.5Te3 through Mn doping at elevated temperature

Qin, Haixu; Liu, Yuan; Zhang, Zongwei; Wang, Yumei; Cao, Jian; Cai, Wei; Zhang, Qian; Sui, Jiehe

doi:10.1016/j.mtphys.2018.07.002

Cited by 84 publications

(41 citation statements)

References 34 publications

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“…[ 136 ] Meanwhile, Bi 2 Te 3 ‐based semiconductor is a layer structure and consist of heavy atoms Bi and Te with natively low κ. [ 160–162 ] Considering their near‐room‐temperature TE performance, Bi 2 Te 3 ‐based semiconductors also act as inorganic “fillers” in inorganic/organic hybrid TE materials as flexible TECs. [ 163 ]…”

Section: Fabrication and Performance Of Tecmentioning

confidence: 99%

Thermoelectric Coolers: Progress, Challenges, and Opportunities

et al. 2022

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Owing to the free of noise, mechanical component, working fluid, and chemical reaction, thermoelectric cooling is regarded as a suitable solution to address the greenhouse emission for the broad cooling scenarios. Here, the significant progress of state‐of‐the‐art thermoelectric coolers is comprehensively summarized and the related aspects of materials, fundamental design, heat sinks, and structures, are overviewed. Particularly, the usage of thermoelectric coolers in smart city, greenhouse, and personal and chip thermal management is highlighted. In the end, current challenges and future opportunities for further improvement of designs, performance, and applications of thermoelectric coolers are pointed out.

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Section: Fabrication and Performance Of Tecmentioning

confidence: 99%

Thermoelectric Coolers: Progress, Challenges, and Opportunities

et al. 2022

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“…Thermal conductivity of 0.56 W m -1 K -1 at 300 K is comparable to that of state-of-the-art thermoelectric materials, such as Yb14MnSb11 (0.7 Wm -1 K -1 at 300 K), Bi0.5Sb1.5Te3 (~0.7 Wm -1 K -1 at 300 K), [010] direction of the SnSe single crystal (0.7 Wm -1 K -1 at 300 K), Zn8Sb7 (0.6 Wm -1 K -1 at 400 K), Ba8Cu14Ge6P26 (0.77 Wm -1 K -1 at 300 K), and LaxBa8-xCu16P30 (~1.1 Wm -1 K -1 at 400 K). [53][54][55][56][57][58] Ba2Si3P6 displays a relatively low absolute value of Seebeck coefficient (−30 µV/K at 300 K) and high resistivity (83 Ωm at 300 K) (Figure 3 middle and bottom). The negative nature of the Seebeck and temperature dependence of resistivity suggest Ba2Si3P6 to be a n-type semiconductor.…”

Section: Introductionmentioning

confidence: 99%

Ba₂Si₃P₆: 1D Nonlinear Optical Material with Thermal Barrier Chains

Mark

Wang

et al. 2019

J. Am. Chem. Soc.

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A novel barium silicon phosphide was synthesized and characterized. Ba2Si3P6 crystallizes in the noncentrosymmetric space group Pna21 (No. 33) and exhibits a unique bonding connectivity in the SiP polyanion not found in other compounds. The crystal structure is composed of SiP4 tetrahedra connected into one-dimensional double-tetrahedra chains through corner sharing, edge sharing, and covalent P-P bonds. Chains are surrounded by Ba cations to achieve an electron balance. The novel compound exhibits semiconducting properties with a calculated bandgap of 1.6 eV and experimental optical bandgap of 1.88 eV. The complex pseudo-one-dimensional structure manifests itself in the transport and optical properties of Ba2Si3P6, demonstrating ultralow thermal conductivity (0.56 W m-1 K-1 at 300 K), promising second harmonic generation signal (0.9 × AgGaS2), as well as high laser damage threshold (1.6 × AgGaS2, 48.5 MW/cm2) when compared to the benchmark material AgGaS2. Differential scanning calorimetry reveals that Ba2Si3P6 melts congruently at 1373 K, suggesting that large single crystal growth may be possible. Disciplines

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“…SnTe | resonant level | nanoprecipitate | output power density | efficiency T hermoelectric (TE) materials can realize the direct interconversion of heat and electrical energy (1)(2)(3)(4)(5). Generally, the performance of TE materials is judged by the figure of merit, ZT = S 2 σT/(κ ele + κ lat ), where S, σ, T, κ ele , and κ lat are the Seebeck coefficient, electrical conductivity, absolute temperature, electronic thermal conductivity, and lattice thermal conductivity, respectively.…”

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confidence: 99%

Synergistic boost of output power density and efficiency in In-Li–codoped SnTe

Guo

Zhu

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

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We report enhanced thermoelectric performance of SnTe by further increasing its intrinsic high carrier concentration caused by Sn vacancies in contrast to the traditional method. Along with In2Te3 alloying, which results in an enhanced Seebeck coefficient, Li2Te is added to further increase the carrier concentration in order to maintain high electrical conductivity. Finally, a relatively high PFave of ∼28 μW cm−1 K−2 in the range between 300 and 873 K is obtained in an optimized SnTe-based compound. Furthermore, nanoprecipitates with extremely high density are constructed to scatter phonons strongly, resulting in an ultralow lattice thermal conductivity of ∼0.45 W m−1 K−1 at 873 K. Given that the Z value is temperature dependent, the (ZT)eng and (PF)eng values are adopted to accurately predict the performance of this material. Taking into account the Joule and Thomson heat, output power density of ∼5.53 W cm−2 and leg efficiency of ∼9.6% are calculated for (SnTe)2.94(In2Te3)0.02-(Li2Te)0.045 with a leg length of 4 mm and cold- and hot-side temperatures of 300 and 870 K, respectively.

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Improved thermoelectric performance of p-type Bi0.5Sb1.5Te3 through Mn doping at elevated temperature

Cited by 84 publications

References 34 publications

Thermoelectric Coolers: Progress, Challenges, and Opportunities

Thermoelectric Coolers: Progress, Challenges, and Opportunities

Ba₂Si₃P₆: 1D Nonlinear Optical Material with Thermal Barrier Chains

Synergistic boost of output power density and efficiency in In-Li–codoped SnTe

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Improved thermoelectric performance of p-type Bi0.5Sb1.5Te3 through Mn doping at elevated temperature

Cited by 84 publications

References 34 publications

Thermoelectric Coolers: Progress, Challenges, and Opportunities

Thermoelectric Coolers: Progress, Challenges, and Opportunities

Ba2Si3P6: 1D Nonlinear Optical Material with Thermal Barrier Chains

Synergistic boost of output power density and efficiency in In-Li–codoped SnTe

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Product

Resources

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Ba₂Si₃P₆: 1D Nonlinear Optical Material with Thermal Barrier Chains