Tellurium Recovery—Development of a Novel
Similar in appearance to tin, tellurium (Te, Z = 52) is conventionally used in a variety of industries, primarily as an additive to several compounds and alloys. Since the innovation of using tellurium in solar cell manufacture was commercialized in 2002, the growth area for tellurium demand in solar cells has swiftly changed its traditional ...
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Corrosion Behavior of GH3535 Alloy Induced by Selenium
Corrosion behavior of a Ni-16Mo-7Cr base superalloy was systematically investigated under a selenium (Se) atmosphere at 700 °C. It shows that Se can react with the alloy elements such as Ni, Mo, Cr et al. to form a reaction layer at the surface of alloy, which is mainly composed of Ni2Se3, MoSe2, and Cr3Se4. The tensile properties of the …
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Nonlinear Band Gap Tunability in Selenium–Tellurium Alloys …
Selenium and tellurium are both energy critical elements as defined by the American Physical Society and the Materials Research Society. When mixed together, both elements form an alloy.
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Tuning Amorphous Selenium Composition with …
Amorphous films of selenium–tellurium alloys were fabricated by sputtering and thermal evaporation. Sputtered samples were deposited as reported in Read et al. Thermally evaporated samples were deposited as …
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Thermodynamics of oxygen in dilute liquid silver–tellurium alloys
The refining step of the liquid alloy by oxidation is very efficient for selenium, whereas oxidation of tellurium does not take place until the Se/Te mass ratio decreases to 0.55 [3, 4]. Thus, the knowledge of oxygen interaction in Ag–Te–O liquid alloys is a key in the Ag purification process, but no previous information is available on the ...
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Microbial-Based Biotechnology: Production and Evaluation of Selenium …
Using seleno-compounds and telluric compounds is a practical approach for developing solutions against drug-resistant bacterial infections and malignancies. It will accelerate the search for novel treatments or adjuvants for existing therapies. Selenium and tellurium nanospheres can be produced by lactic acid bacteria. The bacteria can …
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Ordered and disordered two-dimensional tellurium-selenium …
The chemical nature of selenium and tellurium is so similar that they can easily form solid solution. Like their bulk counterpart, 2D TeSe also have great possibilities to be solid solutions. Thus, we consider the TeSe alloys in the 2D regime based on the crystal structures obtained by PSO structure search.
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15 Uses of Selenium That You Must Know
7. Alloys. Selenium is one of the most important energy-critical elements (ECEs), the elements important for the creation, storage, and transmission of energy. So when combined with other elements, it forms beneficial alloys like selenium tellurium alloy and lead selenium alloy, which is used in various energy-related processes.
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Equilibrium diagram of Selenium—Tellurium system
A critical survey of experimental data available on the Se-Te phase diagram is made, and the crystallographic data on amorphous and crystalline selenium, tellurium and Se1 -xTex alloys are compiled.
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Tuning Amorphous Selenium Composition with Tellurium …
The U.S. Department of Energy's Office of Scientific and Technical Information
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Electrical and optical studies on amorphous Se-Te alloys
Selenium Tellurium Alloys and its Utilization in Solar Cells Ido Hadar et al-This content was downloaded from IP address 157.55.39.118 on 03/12/2021 at 22:59. ... alloys was confirmed by taking x-ray diffractograms of different pieces of alloy taken from the Same batch of a given alloy composition, Le. none of the x-ray difiac-
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Thin Film Preparation and Optical Properties of Se–Te Based
Shukla and Kumar observed that the addition of zinc to Se–Te alloys there is a reduction in the bandgap because selenium and tellurium are more electronegative than the zinc and hence the addition of zinc causes shrinking of the bandgap. It is also evident that the refractive index, absorption coefficient, and extinction coefficient increases ...
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The study of the Pb–Se–Te phase diagram: Part 2
Selenium-tellurium alloys have been extensively used for their good optical properties. They perform well as optical recording media, photoreceptors for laser printers and Se–Te glasses yield some improvements in comparison to pure Se glasses. From the point of view of this study the thermoelectric materials of our interest contain Se and Te ...
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Metals | Free Full-Text | Selenium and Tellurium Separation: …
Conventionally, selenium fumes were recovered from the exhausted gas of roasting furnaces. However, a portion of selenium and tellurium remain in the residue, sent to an acidic or basic leaching process [].Moreover, selenium gas may not be entirely gathered in the filters and causes enormous ecological problems, such as air pollution by …
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Relaxation phenomena in amorphous selenium-tellurium alloys
Amorphous specimens of selenium-tellurium alloys containing 0-35 at% Te were held for various times at temperatures ranging from room temperature to 318°K. Changes with time in the microhardness, density, small-angle X-ray scattering and heat capacity were determined. The hardness of crystalline specimens containing 0-100 at% Te and the ...
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Research and Industrial Application of Selenium and Tellurium …
Selenium (Se, atomic number 34, atomic weight 78.96) lies between arsenic and bromine and between sulfur and tellurium (Te, atomic number 52, atomic weight 127.61) in Group 6A (chalcogens) in the periodic table. It was discovered in 1817 by a Swedish chemist as a contaminant in sulfuric acid. Its name was derived from the Greek …
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Tuning Amorphous Selenium Composition with Tellurium …
U.S. Department of Energy Office of Scientific and Technical Information. Search terms: Advanced search options. ...
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The Se-Te (Selenium-Tellurium) system | Journal of …
Published: 01 April 2007. The Se-Te (Selenium-Tellurium) system. G. Ghosh, R. C. Sharma, D. T. Li & Y. A. Chang. Journal of Phase Equilibria 15, 213–224 ( 1994) Cite this …
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Tellurium, the Forgotten Element: A Review of the …
The metalloid has also been used as doping in copper-silver-selenium-tellurium alloys for higher thermoelectric properties, while ... Nonetheless, the high affinity of tellurium to selenium is related to some biochemical activities of the metalloid inside the body. Therefore, another motive of tellurium toxicity can be associated with the ...
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NATURE March 22, 1958 1s1
an alloy of 80 per cent bismuth telluride and 20 per cent bismuth selenide. ... sulphur or selenium for tellurium in any (Sb--Bi).-Te 3 alloy causes a further small reduction in K 0, but the
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Tuning Amorphous Selenium Composition with …
Pure selenium (Sigma-Aldrich, 99.999%), stabilized selenium (0.2% As, 10 ppm of Cl, Amalgamet), and 10% and 20% tellurium-doped selenium (Amalgamet) were combined to achieve intended concentrations of …
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Chemical alloying, a novel method for the …
Chemical alloying, a novel method for the preparation of homogeneous selenium-tellurium (SexTe1-x) alloys. Thomas W. Smith., Steven D. Smith., and. Santokh S. …
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Nonlinear Band Gap Tunability in Selenium–Tellurium Alloys …
@article{osti_1610507, title = {Nonlinear Band Gap Tunability in Selenium–Tellurium Alloys and Its Utilization in Solar Cells}, author = {Hadar, Ido and Hu, Xiaobing and Luo, Zhong-Zhen and Dravid, Vinayak P. and Kanatzidis, Mercouri G.}, ...
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Thermoelectric properties of electrodeposited tellurium …
The mechanism of electrodeposition of those semiconductors and their ternary alloys occurs by an induced codeposition mechanism after the electrochemical reduction of tellurium from solution. ... Elastic and piezoelectric constants of trigonal selenium and tellurium crystals. Journal of Applied Physics, 50 (1979), pp. 4042-4045.
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Ordered and disordered two-dimensional tellurium-selenium …
[45] A. Nussbaum, Electrical properties of pure tellurium and tellurium-selenium alloys, Phys. Rev. 94 (1954) 337 – 342 . [46] H.P.D. Lanyon, Optical and electrical properties of selenium ...
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Understanding the role of selenium in defect …
Selenium in cadmium telluride solar cells is known to allow bandgap engineering, thus enabling highly efficient devices. ... alloy that lowers the material bandgap, ... and tellurium-on-cadmium ...
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Microbial-Based Biotechnology: Production and Evaluation of Selenium …
Therefore, our question in this study was the following: are they making alloys from the selenium and tellurium and what will be the composition, color, and shape of the nanoparticles?
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Nonlinear Band Gap Tunability in Selenium–Tellurium Alloys …
The optical and electrical properties of selenium‐tellurium alloys have been studied. These properties depend upon the degree of order of the alloys. The bandgap of disordered evaporated layers of … Expand. 36. Save. Band-Gap Nonlinearity in Lead Chalcogenide (PbQ, Q = Te, Se, S) Alloys.
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Optical and Electrical Properties of Selenium‐Tellurium Alloys
As with selenium, the ordered alloys are more conducting than the disordered alloys and the absorption in the low photon energy region is greater. An …
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Se-Te Lattice Parameter Data | Download Table
Selenium (95 wt%) and tellurium (5 wt%) were mixed inside an argon-filled glovebox system with an O 2 content below 0.1 ppm on a hotplate at ~500 °C, which is above the melting point of tellurium ...
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