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Bismuth(III) telluride, Vacuum Deposition Grade, 99.999% (metals basis), Thermo Scientific™

Bismuth Telluride. CAS Number: Chemical Formula: Bi2Te3 Availability: R and D quantities only. Please contact ABSCO for delivery time; Description: ABSCO Limited supplies high purity bismuth telluride as small pieces or powder. Hazard Class: 6.1, PGIII, UN3288 Applications: Bismuth telluride is supplied as a high purity material whose uses include thermoelectric functions.

Bismuth Telluride, undoped (total dust) 5 mg/m 3 10 mg/m 3 . Appropriate Engineering Controls: Whenever possible the use of local exhaust ventilation or other engineering controls is the preferred method of controlling exposure to airborne dust and fume to meet established occupational exposure limits. Use good housekeeping and sanitation ...

Here, we demonstrate a new manufacturing approach for thermoelectric materials. Selective laser melting, an additive manufacturing technique, is performed on loose thermoelectric powders for the first time. Layer-by-layer construction is realized with bismuth telluride, Bi 2 Te 3, and an 88% relative density was achieved. Scanning electron ...

Bismuth telluride (Bi 2 Te 3) is a gray powder that is a compound of bismuth and tellurium also known as bismuth(III) telluride. It is a semiconductor, which, when alloyed with antimony or selenium, is an efficient thermoelectric material for refrigeration or portable power generation. Bi 2 Te 3 is a topological insulator, and thus exhibits thickness-dependent physical properties.

The experimental results were used to estimate the over-all change in the electrical transport parameters (for example, carrier mobilities, effective masses, etc.) between the limits of no copper present and full compensation. ... on bismuth telluride are, however, sufficiently complicated to …

Measurements of the thermal conductivity of bismuth telluride have been made in the range of temperature 150°K to 300°K. It has been found that the electronic contribution to the conduction of heat is considerably greater for specimens in which the charge carriers are intrinsically excited than for specimens in which most of the carriers arise from an impurity concentration; this can be ...

Estimates of 1.1 eV and 1.4 eV have been obtained for the spin orbit splitting of the respective valence and conduction bands involved in those transitions in bismuth telluride. Previous article in issue

Bismuth(III) telluride; CAS Number: ; EC Number: 215-135-2; Synonyms: Bismuth telluride,Bismuth sesquitelluride,Dibismuth tritelluride; Linear Formula: Bi2Te3; find Sigma-Aldrich-401099 MSDS, related peer-reviewed papers, technical documents, similar products & …

BISMUTH TELLURIDE may emit toxic fumes of tellurium when heated to decomposition. Incompatible with strong oxidizing agents such as nitric acid or bromine, chlorine or fluorine. Moderate fire hazard by reaction with such materials. May react with strong acids to evolve toxic gases; may react slowly with water to evolve toxic gases.

Bismuth telluride property At the melting point of 585℃, the composition deviates from the stoichiometric ratio and there is a slight excess of Bi. At this time, the measured density (7.8587g·cm-3) is slightly larger than the theoretical value (7.6828g·cm-3).

The performance of bismuth telluride thermojunctions ... about 65' C. Estimates of the coefficient of performance for thermoelectric refrigeration and of the efficiency for thermo- electric generation will be made, and the possibility of further improvement hill be discussed.

current technology. Bismuth telluride based alloys have a dimensionless figure of merit, a measure of efficiency, near one at room temperature, which makes it the best current material. In order to compete with other forms of energy generation, this needs to be increased to three or higher [2]. Recently, improvements in performance have come in

Anisotropic Analysis of Nanocrystalline Bismuth Telluride Thin Films Treated by Homogeneous Electron Beam Irradiation Shohei 2Kudo1, Saburo 1Tanaka, Koji 1,*Miyazaki3, Yoshitake Nishi and Masayuki Takashiri 1Department of Materials Science, Tokai University, Hiratsuka 259–1292, Japan 2Department of Mechanical Engineering, College of Engineering, Nihon University, Koriyama 963–8642, Japan

Bismuth telluride anode boosting highly reversible electrochemical activity for potassium storage Energy Storage Materials ( IF 17.789) Pub Date :, DOI: 10.1016/j.ensm.2021.09.028

The pure p-type samples consisted of a pure single phase of antimony bismuth telluride (Bi 0.5 Sb 1.5 Te 3) with hexagonal structure as confirmed by ICDD: 98–061–7062 data whereas the n-type samples comprised of a pure single phase of bismuth indium sulfide telluride (Bi 1.894 In 0.106 S 0.11 Te 2.89) with hexagonal structure as confirmed by ICDD: 98–065–8770 data.

SECTION 1. IDENTIFICATION. Product Name: Bismuth Telluride Powder Product Number: All applicable American Elements product codes, e.g. BI-TE-02-P, BI-TE-03-P, BI-TE-04-P, BI-TE-05-P CAS #: Relevant identified uses of the substance: Scientific research and development Supplier details: American Elements 10884 Weyburn Ave.

Bismuth telluride and its alloys are widely used as materials for thermoelectric refrigeration. They are also the best materials for use in thermoelectric generators when the temperature of the heat source is moderate. The dimensionless figure of merit, ZT, usually rises with temperature, as long as there is only one type of charge carrier.

inside a 1-inch quartz tube. A ceramic boat filled with 0.2mg of bismuth telluride precursor was then placed in the center of the hot zone 9 cm away from the substrates. The tube was then evacuated and flushed three times to remove excess moisture from the system. Then, 500 sccm of argon was introduced with a pressure of 4.43 torr.

Bismuth Telluride is a narrow gap layered semiconductor with high thermal conductivity. Recent research has confirmed that bismuth telluride may significantly increase the speed of microchips and be the basis for the emerging next generation technology know as "Spintronics". American Elements Bismuth Telluride products are generally available ...

The band gap and electronic transport in -and -type bismuth telluride alloys show important differences in compositional trends due to the details of their complex band dynamics. In, a change in slope of the band gap with composition coincides with a peak in Seebeck mass and weighted mobility when modeled using a single band [6, 13–15].This correlation is explained by a crossing of two ...

Bulk bismuth telluride is subjected to particle size reduction via high-energy ball milling in order to scatter phonons between grains. This reduces the lattice thermal conductivity which in turn increases the performance of the material. ^ In this work, we investigate the use of low-energy ball milling as a method of creating nanoparticles of ...

Estimates of 1-1 eV and 1-4 e V have been obtained for the spin orbit splitting of the respective valence and conduction bands involved in those transitions in bismuth telluride. 1. INTRODUCTION THE most effective approach to the evaluation of the electronic band structure of a semiconductor from the experimental side is the determination of ...

Thermoelectric materials on the basis of bismuth telluride Bi 2 Te 3. The bismuth telluride Bi 2 Te 3 compound is a semiconductor material, possessing likewise р- and n – conductivity.. Moreover, bismuth telluride crystals bear a remarkable quality.

Publisher estimates that the Bismuth Telluride market size will grow from xxx Million USD in 2020 to xxxx Million USD by 2025, and with a CAGR of xx%. The base year considered for this report is 2019, and the market forecast is projected from 2021 to 2025.

Bismuth telluride appears as gray or black hexagonal platelets with a metallic luster or gray powder. mp: 586°C. Density: 7.8 g/cm3. An alloy of two metallic elements. Sometimes this is doped with selenium sulfide. The selenium sulfide (SeS) dopant alters the electrical properties, but has too low a concentration to affect the chemical properties.

In addition to Bismuth Telluride (Bi 2 Te 3), there are other thermoelectric materials including Lead Telluride (PbTe), Silicon Germanium (SiGe), and Bismuth-Antimony (Bi-Sb) alloys that may be used in specific situations. Figure (2.1) illustrates the relative performance or Figure-of-Merit of various materials over a range of temperatures.

Abstract Bismuth Telluride (Bi2Te3) is basically known as an efficient thermoelectric material. Nowadays, it has been attracted a great deal of interest in energy harvesting, chip cooling, chip sensing and other field of material science because of its potential applications. In order to produce Bi2Te3 nanostructure, a number of methods such as solvo and hydro thermal, refluxing, straight ...

Bismuth (atomic symbol: Bi, atomic number: 83) is a Block P, Group 15, Period 6 element with an atomic radius of 208.98040. The number of electrons in each of Bismuth's shells is 2, 8, 18, 32, 18, 5 and its electron configuration is [Xe] 4f 14 5d 10 6s 2 6p 3. The bismuth atom has a radius of 156 pm and a Van der Waals radius of 207 pm.

Potential sources of tellurium include bismuth telluride and gold telluride ores. Substitutes: Several materials can replace tellurium in most of its uses, but usually with losses in efficiency or product characteristics. Bismuth, calcium, lead, phosphorus, selenium, and sulfur can be used in place of tellurium in many free-machining steels.