Results 201 to 210 of about 6,758 (243)

Strong Anisotropic Effects of p-Type Bi2Te3 Element on the Bi2Te3/Sn Interfacial Reactions

Metallurgical and Materials Transactions A, 2015
The p-type Bi2Te3 thermoelectric materials made by zone-melting method exhibit high anisotropy in the mechanical/thermoelectric properties due to unidirectional crystal growth. This unidirectional crystal structure also has a strong effect on the Sn/p-Bi2Te3 interfacial reactions.
Shan Ye, Jen-Dong Hwang, Chih-Ming Chen
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Spongy Bi2Te3

2020
Trabajo presentado en el European Materials Research Society (EMRS), celebrado en Niza (Francia), del 27 al 31 de mayo de ...
Caballero-Calero, Olga, Ramírez-Peral, María Jesús, Martínez-Moro, Rut, Martín-González, Marisol   +3 more
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Synthesis of polycrystalline nanotubular Bi2Te3

Materials Chemistry and Physics, 2009
Polycrystalline nanotubular Bi2Te3 could be prepared via a high-temperature solution process using nanoscale tellurium, decomposed from trioctylphosphine oxide (TOPO) extracted tellurium species (Te-TOPO), as sacrificial template. The formation of such tubular structure is believed to be the result of outward diffusion of Te during the alloying process.
Zhanli Chai, Zeping Peng, Cheng Wang, Hongjie Zhang   +3 more
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Electropolishing of Bi2Te3 based alloys

Materials Chemistry and Physics, 2001
Abstract Polarography has been used as a tool for controlling the electropolishing of p-type Bi0.5Sb1.5Te3.0 and n-type Bi2Se0.3Te2.7: 0.2 wt.% SbI3 semiconducting materials used in thermoelectric coolers at particular current density in terms of electropolished film thickness preceded by the electroetching of these materials in suitable electrolytes,
K.C. Tewari, V.K. Gandotra, M.V.G. Padmavati, Anupama Singh, A.G. Vedeshwar   +4 more
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Polyol Synthesis of Nano-Bi2Te3

Journal of Electronic Materials, 2014
In this work, a simple and easily scalable wet-chemical synthesis of nanoscale Bi2Te3 has been developed. Bi2Te3 nanoparticles were produced via a polyol method by reaction of Na2Te in solution with a selection of bismuth(III) salts in boiling ethylene glycol. Depending on the reaction temperature and time, particles with size ranging between 20 nm and
Kaspar, Katrin, Pelz, Uwe Martin, Hillebrecht, Harald   +2 more
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The quasibinary system In2Te3-Bi2Te3

Journal of the Less Common Metals, 1968
Abstract The In 2 Te 3 -Bi 2 Te 3 isopleth has been investigated by using a combination of thermal analysis, X-ray and micrographic techniques. A eutectic, melting at 571 °C, occurs at 66 ± 0.5% Bi 2 Te 3 . The solid-solubility of Bi 2 Te 3 in In 2 Te 3 is immeasurably small; Bi 2 Te 3 dissolves 20% In 2 Te 3 at the eutectic temperature and 5 ...
L.R. Scherpereel, P.L. Palumbo, E.A. Peretti   +2 more
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Preparation of Bi2Te3 films by electrodeposition

Journal of Crystal Growth, 2001
Bismuth telluride films have been electrochemically deposited from solutions of Bi 2 O 3 and TeO 2 in diluted HNO 3 (pH = 0.50) onto Ti sheet working electrodes at 293 K. A conventional three-electrode cell was used with a platinum wire counter electrode and Ag/AgCl (saturated KCl) reference electrode.
Yuzuru Miyazaki, Tsuyoshi Kajitani
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Properties of Bi2Se3 and Bi2Te3

2016
In this chapter I will present the fundamentals of the studied systems. I will begin by identifying the crystal structure of each system as well as their point and space group symmetries. From there I will move on to a review of measurements of the bulk vibrational structure using Raman, IR, and inelastic neutron scattering spectroscopies. Additionally,
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Electrical and thermoelectrical properties of undoped Bi2Te3-Sb2Te3 and Bi2Te3-Sb2Te3-Sb2Se3 single crystals

Journal of Physics and Chemistry of Solids, 1991
Abstract The thermoelectric properties and Hall effects of a number of undoped Bi 2 Te 3 -Sb 2 Te 3 pseudo-binary and Bi 2 Te 3 -Sb 2 Te 3 -5%Sb 2 Se 3 pseudo-ternary single crystal alloys grown by the Bridgman method were measured over the temperature range from 77 to 580 K.
Hyung-Wook Jeon, Heon-Phil Ha, Dow-Bin Hyun, Jae-Dong Shim   +3 more
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Properties of Bi2Te3-Bi2Se3 Alloys

Journal of Applied Physics, 1963
Lattice parameters and distribution coefficients for the Bi2Te3-Bi2Se3 pseudobinary alloy system have been determined for several compositions across the phase diagram. The c lattice constant (based on a hexagonal lattice) shows deviation from Vegard's law between 33% Bi2Se3 and pure Bi2Se3 with maximum deviation at 67% Bi2Se3.
G. R. Miller, Che-Yu Li, C. W. Spencer
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