Gold nanolayer and nanocluster coatings induced by heat treatment and evaporation technique

0395251 - ÚJF 2014 RIV US eng J - Journal Article
Schaub, A. - Slepička, P. - Kašpárková, I. - Malinský, Petr - Macková, Anna - Švorčík, V.
Gold nanolayer and nanocluster coatings induced by heat treatment and evaporation technique.
Nanoscale Research Letters. Roč. 8, MAY (2013), s. 248. ISSN 1931-7573. E-ISSN 1556-276X
R&D Projects: GA ČR(CZ) GAP108/10/1106; GA ČR GA106/09/0125
Institutional support: RVO:61389005
Keywords : glass substrate * gold coating * nanostructure * surface properties * thermal annealing
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 2.481, year: 2013
http://www.nanoscalereslett.com/content/pdf/1556-276X-8-249.pdf

The paper is focused on the preparation and surface characterization of gold coatings and nanostructures deposited on glass substrate. Different approaches for the layer preparation were applied. The gold was deposited on the glass with (i) room temperature, (ii) glass heated to 300A degrees C, and (iii) the room temperature-deposited glass which was consequently annealed to 300A degrees C. The sheet resistance and concentration of free carriers were determined by the van der Pauw method. Surface morphology was characterized using an atomic force microscopy. The optical properties of gold nanostructures were measured by UV-vis spectroscopy. The evaporation technique combined with simultaneous heating of the glass leads to change of the sheet resistance, surface roughness, and optical properties of gold nanostructures. The electrically continuous layers are formed for significantly higher thickness (18 nm), if the substrate is heated during evaporation process. The annealing process influences both the structure and optical properties of gold nanostructures. The elevated temperature of glass during evaporation amplifies the peak of plasmon resonance in the structures, the surface morphology being significantly altered.
Permanent Link: http://hdl.handle.net/11104/0223340