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Issue 21, 2014
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Effect of annealing temperature on the fabrication of self-assembled gold droplets on various type-B GaAs surfaces

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Abstract

In this paper, the fabrication and detailed evolution process of self-assembled Au droplets on diverse GaAs type-B (n11) substrates, where n is 9, 7, 5, 4, and 2, are successfully demonstrated. The evolution process is systematically investigated by variation of the annealing temperature (Ta) from 250 to 550 °C. Self-assembled Au clusters begin to nucleate at 300 °C, and wiggly nanostructures with connected geometry are formed as a transitional stage at 350 °C. Between 400 and 550 °C, self-assembled Au droplets are successfully fabricated, and they show increased average dimensions and decreased density with increasing Ta, while showing improved size uniformity above 500 °C. Throughout the Ta range, the properties of the resulting Au droplets depend on the substrates utilized, and this is systematically analyzed in relation to the root mean squared (RMS) roughness.

Graphical abstract: Effect of annealing temperature on the fabrication of self-assembled gold droplets on various type-B GaAs surfaces

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Publication details

The article was received on 27 Jan 2014, accepted on 05 Mar 2014 and first published on 28 Apr 2014


Article type: Paper
DOI: 10.1039/C4CE00210E
Citation: CrystEngComm, 2014,16, 4390-4398
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    Effect of annealing temperature on the fabrication of self-assembled gold droplets on various type-B GaAs surfaces

    M. Sui, M. Li, E. Kim and J. Lee, CrystEngComm, 2014, 16, 4390
    DOI: 10.1039/C4CE00210E

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