Controllable growth and unexpected effects of Ge nanocrystals

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Zhiwen Chen
  • Quanbao Li
  • Dengyu Pan
  • Zhen Li
  • Zheng Jiao
  • Minghong Wu

Detail(s)

Original languageEnglish
Pages (from-to)9871-9878
Journal / PublicationJournal of Physical Chemistry C
Volume115
Issue number20
Publication statusPublished - 26 May 2011

Abstract

Semiconductor nanostructured Ge is a unique material of widespread technological applications, particularly in the field of microelectronics. New strategies for controllable growth and an understanding of the effects of Ge nanocrystals inducted by Au nanoparticles in Au/Ge bilayer films are of fundamental importance in the development of micro/nanodevices. After an extensive search in the published literature, it is found that the previous nanostructures are one-dimensional nanomaterials such as nanowires, nanorods, nanobelts/nanoribbons, and nanotubes, two-dimensional nanoscale thin films, or zero-dimensional nanoparticles, which all have integer dimensions. Herein, the noninteger dimensional Ge nanostructures, which are called nanofractals, were successfully assembled by high-vacuum thermal evaporation techniques. A widely applicable annealing route to produce Ge nanocrystals in the form of nanoparticles, nanorings, and nanofractals is presented in detail. To our surprise, we found that a Au/Ge bilayer film with an interesting nanofractal showed a nonlinear voltage-current behavior. This result suggested that the Au/Ge bilayer film may be a promising material to facilitate future design improvement of micro/nanodevices for microelectronic applications. © 2011 American Chemical Society.

Citation Format(s)

Controllable growth and unexpected effects of Ge nanocrystals. / Chen, Zhiwen; Li, Quanbao; Pan, Dengyu; Li, Zhen; Jiao, Zheng; Wu, Minghong; Shek, Chan-Hung; Wu, C. M. Lawrence; Lai, Joseph K. L.

In: Journal of Physical Chemistry C, Vol. 115, No. 20, 26.05.2011, p. 9871-9878.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review