Preparation and Thermoelectric Properties of N-type PbTe Doped with In and PbI2

Long, Chunquan; Xu-feng, Hou; Gelbstein, Yaniv; Zhang, Jianzhong; Ren, Baoguo; Wang, Zeshen

doi:10.1109/ict.2006.331277

Cited by 4 publications

(9 citation statements)

References 4 publications

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“…The internal resistance curve of n-type SiGe and that of PbTe-SrTe-Na overlaps each other and thus why the curve of n-type SiGe is not seen. The ϕ and internal resistances obtained in the literature when temperature gradients are 10 and 15 K are in references [19,20] and are in the same range as the results obtained in this work marked with (*) in references [9][10][11][12][13][14]. The TE materials with low internal resistances were found to have high ϕ; these materials are p-type SiGe, PbTe-Pbl 2 , PbTe-CdTe, and PbTe-SrTe-Na.…”

Section: The Internal Resistance Of Te Materials Versus Temperaturessupporting

confidence: 78%

“…In Figure 8 is the curve that shows the internal resistances versus temperatures. The symbol marked as (**) in Table III represents results obtained in this work from data Evaluation of thermoelectric materials using COMSOL multiphysics S. Seif, T. Thundat and K. Cadien extracted using references [9][10][11][12][13][14]. In Table III are the data showing the comparison between internal resistance and ϕ when the temperature gradient was set as 15 K. The TE materials such as PbS, PbTe, and PbSe have low ϕ because their internal resistances are high.…”

Section: The Internal Resistance Of Te Materials Versus Temperaturesmentioning

confidence: 99%

“…The maximum powers generated from p-type SiGe when the temperatures were set between 375 and 780 K are in between 1 and 14 μW cm À2 . The powers simulated in this work are marked with symbol (**) or reference numbers [9][10][11][12][13][14], and the power reported in the literature is marked with reference numbers [16,17] in the same Table I. We noted that the TE powers analyzed using our modeling designs when ΔT is 10 or 15 K are within the range when compared with power simulated on Bi 2 Te 3 deposited with Cu/Ni electrode, poly-SiGe 3, poly-SiGe 5, and target spec 6 in [16,17].…”

Section: The Power Generated In Te Materialsmentioning

confidence: 99%

“…The obtained results have shown comprehensive metric units same as those reported in the literature review. The selected TE materials for these studies were PbTe, PbSe, PbS, PbTe-PbI 2 , PbTe-SrTe-Na, PbTe-CdTe, n-type SiGe, and p-type SiGe [9][10][11][12][13][14]. During simulation analysis, the TE materials were being changed, while the upper and lower copper electrodes remained the same.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of efficiency factors and internal resistance of thermoelectric materials

Seif

Thundat

Cadien

2016

Int. J. Energy Res.

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Summary It is well known that the figure of merit (ZT) is unreliable in calculating the efficiency (Ƞ) of micro thermoelectric generators system level and unrealistic when comparing the performance of thermoelectric (TE) materials in the same metric units. To solve this problem, we have used COMSOL multiphysics to design a single leg of micro thermoelectric generators model for computing efficiency factors (ϕ) and internal resistance using TE materials' constants, such as electrical conductivity (σ), TE conductivity (K), and Seebeck coefficient (α). The TE materials were placed between two copper electrodes, and the first data analyzed were the voltages per meter and electric currents per meter. The internal resistances were calculated by taking the ration of voltages to electric currents, and at the same time, the electric powers were calculated from the products of electric currents and voltages yielding power per unit area in μW cm−2. The ϕ were calculated using changes in power (ΔP), temperature gradient (ΔT), and the surface area (A). The obtained results showed that the TE materials with highest ϕ when the temperatures are between 375 and 550 K are n‐type SiGe and p‐type SiGe. When the temperatures are between 550 and 780 K, the TE materials with the highest ϕ are PbTe‐Pbl2, PbTe‐CdTe, and PbTe‐SrTe‐Na. We noted that the ϕ obtained from eight TE materials in this work are within the range as those reported in the literature between 0.001 and 0.091 μW cm−2 K−2. The TE materials with high internal resistances such as PbS, PbTe, and PbSe have ϕ that is <0.0001 μW cm−2 K−2, and those with low internal resistances have ϕ in the range between 0.002 and 0.0091 μW cm−2 K−2. This work has shown that COMSOL multiphysics is a powerful computational tool that can be used to analyze internal resistances and ϕ of TE materials in the same temperature ranges. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: The Internal Resistance Of Te Materials Versus Temperaturessupporting

confidence: 78%

Section: The Internal Resistance Of Te Materials Versus Temperaturesmentioning

confidence: 99%

Section: The Power Generated In Te Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of efficiency factors and internal resistance of thermoelectric materials

Seif

Thundat

Cadien

2016

Int. J. Energy Res.

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“…Its advantages are the good availability of p-and n-type material and thermoelectric figures of merit ZT around 2.0 which is among the highest of all know thermoelectric materials [13][14][15][16][17][18][19]. Still the mechanical properties of PbTe are a major drawback: PbTe has a very high coefficient of thermal expansion around 2 9 10 -5 K -1 [5,20,21], increasing the issue of thermal expansion-related stresses.…”

Section: Introductionmentioning

confidence: 97%

Tailoring the mechanical properties of thermoelectric lead telluride by alloying with non-doping calcium

et al. 2016

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Thermoelectric generators have a great potential in waste heat recovery and energy harvesting due to their principle of directly converting thermal into electrical energy. Despite a long history in space travel and a broad range of potential applications, TEGs are rarely found in terrestrial applications. Reasons are manufacturing problems and limited durability in dynamic operation conditions due to deficient mechanical properties of the thermoelectric materials, which often suffer from low strength and high brittleness. We present a concept for the basically independent tailoring of mechanical and thermoelectric properties. This can be achieved by the alloying of TE materials with additional elements having preferably no or only little influence on the TE properties. We demonstrate a route of improving the mechanical properties of PbTe by alloying with calcium. It is shown that calcium has minor effects on the thermoelectric properties of PbTe while significantly increasing hardness and fracture strength. As proof of concept, mechanically more stable sodium and calcium co-doped Pb 0.966 Ca 0.02 Na 0.014 Te with ZT exceeding 1.2 above 650 K is demonstrated.

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Visible-enhanced silver-doped PbI2 nanostructure/Si heterojunction photodetector: effect of doping concentration on photodetector parameters

2019

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Preparation and Thermoelectric Properties of N-type PbTe Doped with In and PbI2

Cited by 4 publications

References 4 publications

Evaluation of efficiency factors and internal resistance of thermoelectric materials

Evaluation of efficiency factors and internal resistance of thermoelectric materials

Tailoring the mechanical properties of thermoelectric lead telluride by alloying with non-doping calcium

Visible-enhanced silver-doped PbI2 nanostructure/Si heterojunction photodetector: effect of doping concentration on photodetector parameters

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