Design and understanding of solid-state and crystalline materials
Subscribers
Free access
Paper
Article citation: Lei Jin, CrystEngComm, 2010, DOI: 10.1039/b914542g
Twinning mediated growth of ZnSe tri- and bi-crystal nanobelts with single crystalline wurtzite nanobelts as building blocks
Lei Jin, Jianbo Wang, Shuangfeng Jia, Hongqian Sang, Liangzi Deng, Xue Yan, Yao Cai, Ping Lu and Wallace C. H. Choy
A variety of ZnSe nanostructures, including the single-, bi- and tri-crystal nanobelts, are successfully fabricated through the thermal evaporation method and comprehensively investigated by a combination of various transmission electron microscopy (TEM) techniques. All nanostructures are of metastable wurtzite phase and the bi- and tri-crystal nanobelts are both mediated by the {01
3} twinning, with the single crystal nanobelts as building blocks. Benefiting from the commonly observed morphological evolutions, not only the crystallographic relations for different variants in an individual bi- or tri-crystal nanobelt, but also the intrinsic connections between different morphologies are fully understood by selected area electron diffraction, convergent beam electron diffraction and high-resolution TEM techniques, which reveals that the accompanying formation of tri-crystal nanobelt, the {013} relationship, though maintained still, is not as strict as that in a bi-crystal nanobelt and holds a 
0.75° deviation for a case study; the angles between adjacent twinning variants/planes are compressed from 125.0° in bi-crystal nanobelts to 120°, and finally form an asymmetric twinning plane distributions. The study helps deepen the understanding of tri-crystal and related complex semiconductor nanostructures.
RSS feed