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Solvothermal Synthesis of Bi2Se3 Hexagonal Nanosheet Crystals

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Abstract:

Bismuth selenide (Bi2Se3) hexagonal nanosheet crystals with uniform size were successfully prepared via a solvothermal method at 160°C for 22 h using bismuth trichloride(BiCl3) and selenium powder(Se) as raw materials, sodium bisulfite(NaHSO3) as a reducing agent, diethylene glycol(DEG) as solvent, and ammonia as pH regulator. Various techniques such as X-ray diffraction (XRD), field-emission scanning electron microscope (FESEM), high-resolution transmission electron microscope (HRTEM), and selected area electron diffraction (SAED) were used to characterize the obtained products. Results show that the as-synthesized samples are pure Bi2Se3 hexagonal nanosheet crystals. A possible growth mechanism for Bi2Se3 hexagonal nanosheet crystals is also discussed based on the experiment.

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Periodical:

Advanced Materials Research (Volumes 236-238)

Pages:

1712-1716

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.236-238.1712

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Online since:

May 2011

Authors:

Hai Tao Liu, Jun Dai, Jia Jia Zhang, Wei Dong Xiang

Keywords:

Bi2Se3, Binary Chalcogenide, Semiconductor, Solvothermal Synthesis

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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