Generation of charged clusters during thermal evaporation of gold

Barnes, Mark C., Jeon, In-D., Kim, Doh-Y., and Hwang, Nong M. (2002) Generation of charged clusters during thermal evaporation of gold. Journal of Crystal Growth, 242 (3-4). pp. 455-462.

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Investigating the generation of charged clusters during thermal evaporation of gold at 1523 K has created a new understanding of film growth. In order to verify the presence of charged clusters in the gas phase and their polarity biases of +200, 0 and -200 V were applied to the substrate. The charge on the majority of clusters was shown to be positive by observing their deposition behaviors under the applied electric field. These charged clusters were shown to be the major flux for gold film formation. The charge carried by clusters could be detected on a Faraday cup as an electric current. From the temperature dependence of the current, the activation energy for positive charging was estimated to be 1.56 eV. Such a low activation energy suggests that the charging mechanism of clusters is the surface ionization described by the Saha–Langmuir equation.

Item ID: 38184
Item Type: Article (Research - C1)
ISSN: 1873-5002
Keywords: A1. computer simulation; A1. growth models; A3. physical vapor deposition processes; B1. metals; B1. nanomaterials
Funders: Australian Research Council (ARC)
Date Deposited: 09 Apr 2015 03:49
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091207 Metals and Alloy Materials @ 30%
10 TECHNOLOGY > 1007 Nanotechnology > 100706 Nanofabrication, Growth and Self Assembly @ 40%
02 PHYSICAL SCIENCES > 0204 Condensed Matter Physics > 020401 Condensed Matter Characterisation Technique Development @ 30%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 50%
97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 50%
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