Synthesis of Bi2Se3 thermoelectric nanosheets and nanotubes through hydrothermal co-reduction method

Cui, Hongmei; Liu, Hong; Li, Xia; Wang, Jing; Han, Feng; Zhang, Xudong; Boughton, Robert I.

doi:10.1016/j.jssc.2004.06.042

Cited by 107 publications

(66 citation statements)

References 22 publications

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“…Chemical synthesis of TI nanomaterials, primarily the noncentro-symmetric zincblende HgTe-type family and the hexagonal centrosymmetric Bi 2 Se 3 family of compounds, has been achieved with a diverse set of methods: colloidal [64][65][66], solvothermal [67][68][69], hydrothermal co-reduction [70], mechano-chemical [71,72], photochemical [73], galvanic displacement [74], and a microwave-assisted synthesis [75].…”

Section: Chemical Synthesismentioning

confidence: 99%

Topological insulator nanostructures

Judy

Koski

Cui

2012

Physica Rapid Research Ltrs

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1 Introduction Topological insulators (TIs) are recently discovered quantum materials that are insulating in the bulk, but conductive on the surface [1][2][3]. Gapless surface states in TIs originate from strong spin-orbit coupling in the bulk, and exhibit special electronic property of spinmomentum locking due to time reversal symmetry. The exotic electronic nature of the TI surface states has garnered intense interests in this new class of materials and can be used to study several fundamental physical phenomena inaccessible in ordinary materials. The spinmomentum locking property of the TI surface states will undoubtedly be useful for a broad range of future electronic applications such as dissipationless transport, spintronics, and quantum computing.In this review, we follow the recent experimental research progress in TI nanostructures, and discuss various nanomaterial synthesis methods and notable transport measurements. Also, current materials challenges that hinder the easy access and control of the TI surface states are identified and unique solutions that TI nanostructures can provide to overcome these challenges are suggested. The

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Section: Chemical Synthesismentioning

confidence: 99%

Topological insulator nanostructures

Judy

Koski

Cui

2012

Physica Rapid Research Ltrs

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“…[3][4][5] Recently, with the research development of topological insulators(TIs), [6][7][8][9] it attracts the geeat attention again. TI is a new state having an energy gap in its bulk band structure and metallic helical states on its surface, which distinct from simple a metal or an insulator.…”

Section: Introductionmentioning

confidence: 99%

First-principles study of native point defects in Bi2Se3

et al. 2013

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“…The crystal structure of Bi 2 Se 3 consists of Bi and Se layers [22]. A Bi layer is composed of Bi atoms arranged to form a plane hexagonal structure, and a Se layer is formed by Se atoms arranged in the same way.…”

Section: Resultsmentioning

confidence: 99%

“…And when the temperature is low, the formation rate of Bi 2 Se 3 molecules and the growth rate of the crystals are low. It is easy to get small crystalline nanosheets with well-formed hexagonal morphology [22].…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Bi2Se3 Thermoelectric Nanopowders

Cai

Wang²,

Yin³

et al. 2008

TOCRYJ

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Abstract:In order to synthesize Bi 2 Se 3 nanopowders by a solvothermal synthesis method, ethylenediamine, dimethylformamide, acetone, absolute ethanol, and deionized water were respectively used as a solvent, using BiCl 3 and elemental Se powders as starting materials and KBH 4 as a reductant at 180 o C for different times. X-ray diffraction was used for examining the phase composition of the products. The results showed that pure Bi 2 Se 3 nanopowders were successfully synthesized only when deionized water was used as the solvent. Transmission electron microscopy observation revealed that the nanopowders consisted of big polygonal nanosheets and small irregular nanoparticles. The formation mechanism of the Bi 2 Se 3 nanosheets and nanoparticles was proposed.

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Synthesis of Bi2Se3 thermoelectric nanosheets and nanotubes through hydrothermal co-reduction method

Cited by 107 publications

References 22 publications

Topological insulator nanostructures

Topological insulator nanostructures

First-principles study of native point defects in Bi2Se3

Synthesis and Characterization of Bi2Se3 Thermoelectric Nanopowders

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