Figure 7.

Schematic of the reagent and by-product diffusion paths and diagram of the Au/Si Schottky contact. (a) Schematic of two possible diffusion paths of the reagent and by-product during the metal-assisted chemical etching process. (b) Energy band diagram of the Au/Si Schottky contact; ΦB is the barrier height for the electronic holes injected from the Au into the Si.

Zuo et al. Nanoscale Research Letters 2013 8:193   doi:10.1186/1556-276X-8-193
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