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The Electrical Conductivity and Thermoelectric Power of ...

Heat Conduction in Bismuth Telluride H J Goldsmid-The Electrical Properties of Bismuth Telluride R Mansfield and W Williams-Magnetothermal Resistance and Magnetothermoelectric Effects in Bismuth Telluride A E Bowley, R Delves and H J Goldsmid-Recent citations Unusual thermoelectric transport anisotropy in quasi-two-dimensional rhombohedral GeTe

DEVELOPMENT OF A BISMUTH TELLURIDE …

bismuth telluride (Bi 2 Te 3), lead telluride (PbTe), calcium manganese oxide, skutterudite compounds, or combinations, depending on temperature [4]. Properties of TE materials determine the possibility of producing TE devices on a large scale. Thermal and electrical

Quasiparticle Electronic Structure of Bismuth Telluride In ...

The quasiparticle band structure of bismuth telluride 􏰀Bi2Te3􏰁, an important thermoelectric material that exhibits topologically insulating surface states, is calculated from first principles in the GW approximation. The quasiparticle energies are evaluated in fine detail in the first Brillouin zone using a Wannier-function interpo ...

THE HEAT CAPACITY OF BISMUTH TELLURIDE AT LOW ... - …

bismuth telluride to widen the investigation of the heat capacity of layer lattices. 1. THE COMPOUND AND METHOD OF MEAS­ UREMENT Bismuth telluride has a typical layer lattice, which consists of five-chain layers, with the mon­ atomic networks alternating in the order Te-Bi-*It was shown by Itskevich and Kontorovich' that graphite

Tellurium

bismuth telluride, gold telluride, and lead-zinc ores. Substitutes: Several materials can replace tellurium in most of its uses, but usually with losses in production efficiency or product characteristics. Bismuth, calcium, lead, phosphorus, selenium, and sulfur can be used in …

Bismuth - Wikipedia

The spiral, stair-stepped structure of bismuth crystals is the result of a higher growth rate around the outside edges than on the inside edges. The variations in the thickness of the oxide layer that forms on the surface of the crystal cause different wavelengths of light to interfere upon reflection, thus displaying a rainbow of colors.

Bismuth - Wikipedia

Bismuth telluride is a semiconductor and an excellent thermoelectric material. Bi 2 Te 3 diodes are used in mobile refrigerators, CPU coolers, and as detectors in infrared spectrophotometers. Bismuth oxide, in its delta form, is a solid electrolyte for oxygen. This form normally breaks down below a high-temperature threshold, but can be ...

Quasiparticle electronic structure of bismuth telluride in ...

Abstract The quasiparticle band structure of bismuth telluride (Bi 2 Te 3) , an important thermoelectric material that exhibits topologically insulating surface states, is calculated from first principles in the GW approximation.The quasiparticle energies are evaluated in fine detail in the first Brillouin zone using a Wannier-function interpolation method, allowing the accurate determination ...

Global and Chinese bismuth telluride (cas 1304 82 1 ...

Global and Chinese bismuth telluride (cas 1304 82 1) Industry, 2016 Market Research Report is an in-depth study covering all important market parameters, such as Market Trends, Share, Size, Growth ...

Global Bismuth Telluride Market Expected to Witness a ...

Bismuth telluride is a gray or black hexagonal plate with a metallic luster or gray powder.It is an alloy of two metallic elements (bismuth and tellurium), also known as telluride (III).It is a semiconductor and, when alloyed with antimony or selenium, is an effective thermoelectric material for refrigeration or portable electricity generation ...

Rotsen Cortez - Project Engineer - Petron Corporation ...

• Responsible in all Engineering, and Building Management Concerns. • Perform regular and periodic maintenance procedures on all major to its accessories and support machineries with respect to operation to maintain business continuity such as Chillers, Cooling Towers, AHU, FCU, STP, Genset, Switchgear, elevators/escalators, pumps, fans and blowers and FDAS system

The Electrical Conductivity and Thermoelectric Power of ...

The electrical conductivity and thermoelectric power of the semiconductor Bi 2 Te 3 have been measured between 150°K and 300°K. n-type and p-type samples with a wide range of carrier concentration have been included. Most samples have shown extrinsic conduction and have been partially degenerate over at least part of the temperature range, so it has been necessary to use Fermi-Dirac ...

NMR studies of the topological insulator Bi2Te3 - arXiv

components, separate the contribution of the Knight shift, and estimate the isotropic shift and anisotropy. In the present paper we report on results of 125Te NMR studies of the single crystalline Bi 2 Te 3 and powder made of a bismuth telluride single crystal in a large temperature range below room temperature. 2. Samples and experiment.

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grant, we demonstrated that antimony bismuth telluride can be pressure tuned to exhibit a thermoelectric figure of merit that is at least a factor of two higher than any known material at ambient pressure. This demonstration that higher ZT is possible under pressure is a valuable "existence proof". We have developed

JOURNAL OF OPTOELECTRONICS AND ADVANCED …

effect, for thermoelectric applications the bismuth telluride nanowires (NW) are better than the superlattices. The bismuth telluride NW can be obtained by electrochemical deposition of the material in the nanopores of anodized alumina membranes, by Taylor-Ulitovsky technique, and by high pressure injection of the melt into capillaries [2,3].

Richard Gunter - Bismuth Tellurides in British Columbia

Bismuth telluride localities in British Columbia have been noted in conjunction with ore mineralogy in a number of publications. In a series of articles in the American Mineralogist from 1950 to 1954 Thompson listed ore minerals in Western Canada and included a number of bismuth tellurides. In 1950 he listed Wehrlite from the Ajax Claim; in ...

Effect of grain size on thermoelectric properties of n ...

 · The effect of grain size on the thermoelectric properties of n-type nanocrystalline bismuth-telluride based thin films is investigated. We prepare the nanocrystalline thin films with average grain sizes of 10, 27, and 60 nm by a flash-evaporation method followed by a hydrogen annealing process. The thermoelectric properties, in terms of the thermal conductivity by a differential …

bismuth telluride | Sigma-Aldrich

Search results for bismuth telluride at Sigma-Aldrich. Compare Products: Select up to 4 products. *Please select more than one item to compare

Preparation of bismuth telluride based thermoelectric ...

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].

Electrical Properties of Thermal Evaporated Bismuth ...

Bismuth Telluride is a narrow gap semiconductor and it is one of the best performing materials in the point of view of thermoelectric properties [ 2]. Recently, researchers have reported this material as a topological insulator [ 6] that behaves as an insulator in its …

Bismuth Telluride Price, Wholesale & Suppliers - Alibaba

Alibaba.com offers 133 bismuth telluride price products. About 78% of these are other metals & metal products, 3% are ipl machine, and 3% are animal pharmaceuticals. A wide variety of bismuth telluride price options are available to you, such as free samples. There are 133 bismuth telluride price suppliers, mainly located in Asia.

Anisotropic Analysis of Nanocrystalline Bismuth Telluride ...

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

The Electrical Conductivity and Thermoelectric Power of ...

The electrical conductivity and thermoelectric power of the semiconductor Bi 2 Te 3 have been measured between 150°K and 300°K. n-type and p-type samples with a wide range of carrier concentration have been included. Most samples have shown extrinsic conduction and have been partially degenerate over at least part of the temperature range, so it has been necessary to use Fermi-Dirac ...

Bismuth Telluride

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 ...

SELENIUM AND TELLURIUM [ADVANCE RELEASE]

telluride (CdTe), and copper indium gallium diselenide (CiGS). ... Semiconducting bismuth telluride was used in thermoelectric cooling devices. These devices consist of a ... 2016, a 13% increase from the 2015 estimate of 810 t. China’s estimated production of tellurium was 279 t, a slight decrease

Bismuth Telluride Hexagonal Nanoplatelets and Their Two ...

Bismuth Telluride Hexagonal Nanoplatelets and Their Two-Step Epitaxial Growth Weigang Lu,† Yong Ding,‡ Yuxi Chen,† Zhong Lin Wang,*,‡ and Jiye Fang*,† Contribution from the Department of Chemistry and AdVanced Materials Research Institute,

JOURNAL OF OPTOELECTRONICS AND ADVANCED …

effect, for thermoelectric applications the bismuth telluride nanowires (NW) are better than the superlattices. The bismuth telluride NW can be obtained by electrochemical deposition of the material in the nanopores of anodized alumina membranes, by Taylor-Ulitovsky technique, and by high pressure injection of the melt into capillaries [2,3].

MIGRATION AND EFFECTS OF COPPER IN BISMUTH …

MIGRATION AND EFFECTS OF COPPER IN P-TYPE BISMUTH TELLURIDE ... The experimental results were used to estimate the over-all change in the electrical transport parameters (for example, carrier mobilities, effective masses, ... Bismuth telluride (Bi2 Te3) has a rhombohedral unit cell with R3m symmetry (4, 5, 6).

Thermoelectric properties of electrically gated bismuth ...

Thermoelectric properties of electrically gated bismuth telluride nanowires I. Bejenari,1,2,* V. Kantser,2,† and A. A. Balandin1,‡ 1Department of Electrical Engineering and Materials Science and Engineering Program, University of California-Riverside, Riverside, Califor USA 2Institute of Electronic Engineering and Industrial Technologies, Academy of Sciences of Moldova, Kishinev ...

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The Optical Properties of Bismuth Telluride 549 4.4. Refractive Index Many specimens showed well-defined transmission interference fringes and and these were used to calculate the refractive index n, using the relation, 2nt= NA where t is the sample thickness and N the fringe number.Approximate

Bismuth Telluride Solubility Limit and Dopant Effects on ...

Bismuth Telluride Solubility Limit and Dopant Effects on the Electronic Properties of Lead Telluride. By Dana Ben-Ayoun and Yaniv Gelbstein. Submitted: ... (GEM) approach enables to estimate the transport properties based on experimentally measured properties of each of the involved phases. Since the approach is taking into consideration ...

Bismuth telluride - Wikipedia

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.