Time-dependent evolution process of Sb2Te3 from nanoplates to nanorods and their Raman scattering properties

doi:10.1088/1674-1056/25/10/107105

Abstract High-quality Sb₂Te₃ nanostructures are synthesized by a simple hydrothermal method. The morphologies of the nanostructures change from hexagonal nanoplates to nanorods with the extension of growth time. Secondary nucleation is the dominant factor responsible for the change of the morphologies. Structural analyses indicate that all the obtained nanostructures are well crystallized. IR-active phonons are mainly observed in the Raman spectra of the nanoplates and nanorods. The slight deviations are observed in the Raman modes between the nanoplates and nanorods, which could originate from confinement effect in the nanostructures.

Keywords: Sb₂Te₃ nanostructures evolution process confinement effect

Received: 14 March 2016
Revised: 03 May 2016
Accepted manuscript online:

PACS:	71.20.Nr	(Semiconductor compounds)
	74.25.Gz	(Optical properties)
	74.25.Kc	(Phonons)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11104250 and 61274099), the Fund from the Science Technology Department of Zhejiang Province, China (Grant No. 2012C21007), and the Fund for the Zhejiang Provincial Innovation Team, China (Grant No. 2011R50012).

Corresponding Authors: Xiu-Qing Meng, Yun-Zhang Fang
E-mail: xqmeng@semi.ac.cn;fyz@zjnu.cn

Cite this article:

Xiu-Qing Meng(孟秀清), Ning Tang(汤宁), Mian-Zeng Zhong(钟绵增), Hui-Qun Ye(叶慧群), Yun-Zhang Fang(方允樟) Time-dependent evolution process of Sb₂Te₃ from nanoplates to nanorods and their Raman scattering properties 2016 Chin. Phys. B 25 107105

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Time-dependent evolution process of Sb2Te3 from nanoplates to nanorods and their Raman scattering properties

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Time-dependent evolution process of Sb₂Te₃ from nanoplates to nanorods and their Raman scattering properties