Results 151 to 160 of about 2,364 (190)

Bi2Te3–Te nanocomposite formed by epitaxial growth of Bi2Te3 sheets on Te rod

Journal of Solid State Chemistry, 2006
Abstract Single-crystal Bi 2 Te 3 –Te nanocomposites with heterostructure were synthesized using a two-step solvothermal process in the presence of ethylenediaminetetraacetic acid disodium salt. The first step is the formation of the Te nanorods and the second step is to grow the Bi 2 Te 3 sheets off the Te rods surface to form the Bi 2 Te 3 –Te ...
Yuan Deng, Chang-Wei Cui, Ni-La Zhang, Tian-Hao Ji, Qing-Lin Yang, Lin Guo   +5 more
openaire   +1 more source

Three-Dimensional Bi2Te3 Nanocrystallites Embedded in 2D Bi2Te3 Films Grown by MOCVD

Journal of Electronic Materials, 2012
Two- (2D) and three-dimensional (3D) growth of nanostructured Bi2Te3 films was performed on 4° tilt (100) GaAs substrates using a metalorganic chemical vapor deposition system. To obtain 3D Bi2Te3 crystallites embedded in 2D planar film, we alternately changed the gas flow rate in the reactor.
HyunWoo You, Seung Hyub Baek, Chang Kyo Kim, Ho-Ki Lyeo, Chan Park, Jin-Sang Kim   +5 more
openaire   +1 more source

Study of the strain-resistance properties of massive samples of Bi2Te3-Sb2Te3 and Bi2Te3-Bi2Se3

Journal of Engineering Physics, 1989
The coefficients of strain sensitivity of polycrystalline samples of ternary alloys based on bismuth and antimony chalcogenides were measured and the strain sensitivity of Peltier thermocouples of low height under real working conditions were evaluated.
E. K. Iordanishvili, M. B. Nabiev, Kh. O. Olimov, Yu. I. Ravich   +3 more
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source