Growth of ZnSe-based longitudinal twinning nanowires by phase transformation

Jing Xu; Aijiang Lu; Chunrui Wang; Xiaoshuang Chen; Junhao Chu; Gyu-Chul Yi

doi:10.1117/12.2050986

16 December 2013 Growth of ZnSe-based longitudinal twinning nanowires by phase transformation

Jing Xu, Aijiang Lu, Chunrui Wang, Xiaoshuang Chen, Junhao Chu, Gyu-Chul Yi

Proceedings Volume 9068, Eighth International Conference on Thin Film Physics and Applications; 906807 (2013) https://doi.org/10.1117/12.2050986
Event: Eighth International Conference on Thin Film Physics and Applications (TFPA13), 2013, Shanghai, China

Abstract

Zinc blende ZnSe longitudinal twinning nanowires (Type I) and a sandwich structure with the wurtzite ZnSe inserting into the zinc blende ZnSe longitudinal twinning nanowires (Type II) are fabricated via a simple thermal evaporation method. The growth of them might be caused by the crystal plane slip during the phase transformation process from wurtzite ZnSe to zinc blende ZnSe nanowire. The wurtzite ZnSe might have two origins: 1) The phase transformed wurtzite from zinc blende. At first, during the temperature rising stage in the experiment, before the temperature approached to the transformation temperature (T_tr), ZnSe in zinc blende phase might begin to nucleate and grow. Once the temperature is higher than T_tr, the zinc blende products would transform to wurtzite phase. 2) The new-born nuclei grown wurtzite phase at high temperature for it is reported that the wurtzite phase is more stable at higher temperature. During the cooling period, the source material is exhausted and no more nucleation would occur. Some of the wurtzite products would transform to zinc blende phase when the temperature is lower than T_tr. During the process, it is reasonable that the ZB phase begins to form from the outer sides of an individual nanowire. Once the process completes, the longitudinal twinning ZB nanowire would be obtained; otherwise, the sandwich-structured nanowire forms.

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Jing Xu, Aijiang Lu, Chunrui Wang, Xiaoshuang Chen, Junhao Chu, and Gyu-Chul Yi "Growth of ZnSe-based longitudinal twinning nanowires by phase transformation", Proc. SPIE 9068, Eighth International Conference on Thin Film Physics and Applications, 906807 (16 December 2013); https://doi.org/10.1117/12.2050986

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KEYWORDS

Nanowires

Zinc

Crystals

Lithium

Transmission electron microscopy

Chemical species

Diffraction

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