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bismuth telluride are the state-of-the-art, we intentionally focus primarily on the properties of the binary compound. By doing so, we aim to explain the fundamental properties …
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Bismuth crystals were cleaved at room temperature under ultrahigh vacuum conditions and the cleaved samples were cooled down to 4 K, at which temperature STM and STS measurements were carried out.
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Bismuth telluride halides (BiTeX) are Rashba-type crystals with several potential applications ranging from spintronics and nonlinear optics to energy. Their layered structures and low cleavage energies allow their production in a two-dimensional form, opening the path to miniaturized device concepts. The possibility to exfoliate bulk BiTeX …
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The best known thermoelectric material for near room temperature heat-to-electricity conversion is bismuth telluride. Amongst the possible fabrication techniques, electrodeposition has attracted ...
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Bismuth telluride is the only commercially available thermoelectric material, but the poor n-type thermoelectric performance restricts its further development.Herein, we report the n-type Bi 2 Te 2.7 Se 0.3 + x wt% PbI 2 polycrystalline with both high texture degree and various microstructures by the temperature gradient method. Based on the …
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We come up with a hybrid liquid exfoliation method to prepare bismuth telluride nanocrystals efficiently and cost-effectively. The nonlinear transmittance of the nanocrystals has been ...
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which is continually repeated. Strong covalent–ionic bonds exist between the Bi atoms and the Te atoms on both types of site but the layers of Te [1] atoms are bound to neighbouring Te [1] layers only by weak van der Waals forces [].It is found that crystals of bismuth telluride are easily cleaved along the direction of the layers, normal to the …
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Keywords: bismuth telluride, thermoelectrics, electronic structures, transport modeling Bismuth telluride is the working material for most Peltier cooling devices and thermoelectric generators. This is because Bi 2 Te 3 (or more precisely its alloys with Sb 2 Te 3 for p-type and Bi 2 Se 3 for n-
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The p-type bismuth telluride-based polycrystalline materials suiting for low-temperature power generations (near 380 K) have been obtained through Sb-alloying and HD, which suppresses the ...
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Bismuth telluride (Bi 2 Te 3) is one among them. In the present work single crystal of bismuth telluride was grown using vertical Bridgman technique. The phase of grown crystals was analysed using a powder X-ray diffractometer. Quality of the grown crystal was assessed by using high resolution X-ray diffractometer and observed that it …
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Room-temperature bismuth telluride (Bi 2 Te 3) thermoelectrics are promising candidates for low-grade heat harvesting.
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Bismuth telluride (Bi 2 Te 3) is the most mature thermoelectric material that has been well commercialized for electronic cooling and has gradually been used for …
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Bismuth telluride (Bi 2 Te 3) is a kind of narrow band gap semiconductor material, which has relatively high electrical conductivity, ...
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Bismuth Telluride (Bi 2 Te 3) 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. ... The experimental results showed that the synthesized crystals …
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Bismuth telluride (Bi 2 Te 3) is a promising thermoelectric material for applications near room temperature. To increase the thermoelectric performance of this …
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Here we use nanochemistry to stabilize bulk bismuth telluride (Bi 2 Te 3) that violates phase equilibrium, namely, phase-pure n-type K 0.06 Bi 2 Te 3.18. Incorporated potassium and tellurium in Bi 2 Te 3 far exceed their solubility limit, inducing simultaneous increase in the electrical conductivity and the Seebeck coefficient along …
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Bismuth telluride (Bi 2 Te 3) is one of the best thermoelectric materials because of its high conversion efficiency at room temperature.Thus, it is widely used in commercial thermoelectric devices [].Thermoelectric systems offer the advantages of possessing a small size, low weight, high reliability, offering convenient switching …
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DOI: 10.1016/0022-3697(88)90182-5 Corpus ID: 95362128; Thermal properties of high quality single crystals of bismuth telluride—Part I: Experimental characterization @article{Fleurial1988ThermalPO, title={Thermal properties of high quality single crystals of bismuth telluride—Part I: Experimental characterization}, author={J-P. Fleurial and L. …
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A method for "graphene-inspired" exfoliation of crystalline bismuth telluride films with a thickness of a few atoms is described, paving the way for producing stacks of crystallines bism Ruth Telluride quantum wells with the strong spatial confinement of charge carriers and acoustic phonons, beneficial for thermoelectric devices. Bismuth …
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This study offers a cost-effective strategy to produce high quality Bi 2 Te 3 nanocrystals, and also validates the nanocrystals' broadband nonlinear optical …
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DOI: 10.1016/J.MSEA.2016.01.033 Corpus ID: 137736421; Crystalline perfection and mechanical investigations on vertical Bridgman grown Bismuth telluride (Bi2Te3) single crystals for thermoelectric applications
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Utilizing bismuth telluride (Bi2Te3) nanosheet saturable absorbers (SA), a remarkable source of continuous-wave infrared radiation known for its high efficiency and wide range of accessible wavelengths, has been successfully developed. The mode-locking bright pulses have a repetition frequency of 9.5 MHz and a pulse width of 0.6 ps at a …
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Here, we demonstrate high-performance flexible films and devices by screen bismuth telluride based nanocrystal inks synthesized using a microwave-stimulated wet-chemical method.
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i.e. quasi two-dimensional (2-D) crystals. The successful exfoliation of the quasi 2-D crystals of bismuth telluride opens up tremendous opportunities for re-engineering its thermoelectric properties and enhancing the thermoelectric figure of …
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However, the overall flexibility of 3D Bi 2 Te 3-based TEDs is still limited due to the rigidity of the thermoelectric cells.When the device experiences thousands of repeated bending cycles, the interface between the electrode and the thermoelectric leg becomes unstable, leading to high internal resistance or even cracks [190].To further …
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In this work, we present a simple method to improve the thermoelectric performance of the RF sputtered bismuth telluride films by raising the power of deposition. The as-deposited samples synthesized under different powers were investigated and compared. It shows that the films prepared under relatively higher power conditions …
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crystals. However, this process occurred concurrently with Cu ordering within the vdW gap. Above 400 C, the Cu-intercalated crystals transformed to layered Cu 2Te with a strong orientation relationship to the host Bi2Te3 lattice. At these temperatures, some Cu-intercalated crystals underwent high-mobility boundary motion and polycrystal growth.
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H. J. Goldsmid, Proceedings of the International Conference on the Physics of Semiconductors, Prague, 1960 (Publishing House of the Czechoslovak Academy of Sciences, Prague, 1961), p. 1015.
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Alloying bismuth telluride with antimony telluride and bismuth selenide for p- and n-type materials, respectively, improves the thermoelectric quality factor for use in room temperature modules.
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The XRD pattern demonstrated the good pure phase of crystal structure and the microform of the prepared samples were a hexagonal lattice having an average …
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