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Chin. Phys. B, 2016, Vol. 25(10): 107105    DOI: 10.1088/1674-1056/25/10/107105
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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

Xiu-Qing Meng(孟秀清)1, Ning Tang(汤宁)1, Mian-Zeng Zhong(钟绵增)2, Hui-Qun Ye(叶慧群)1, Yun-Zhang Fang(方允樟)1
1. Zhejiang Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University, Jinhua 321004, China;
2. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
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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