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Title: Characterization of submonolayer film composed of soft-landed copper nanoclusters on HOPG

Preformed Copper nanoclusters are deposited on highly oriented pyrolytic graphite (HOPG) at very low energy. For the study of chemical composition X-ray Photoelectron Spectroscopy (XPS) is performed for a wide range of binding energy without exposing the sample in the ambient. Morphological aspects of the supported clusters are characterized employing high resolution scanning electron microscope (SEM). Different types of morphology are observed depending on the nature of the substrate surface. Big fractal islands are formed on terraces while at the step edges small islands are found to form. Ex-situ cathodoluminescence (CL) measurement shows peak at 558 nm wavelength which corresponds to the band gap of 2.22 eV which is due to Cu{sub 2}O nanocrystals formed due to oxidation of the deposited film in ambient.
Authors:
; ; ;  [1]
  1. Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata-700 064 (India)
Publication Date:
OSTI Identifier:
22490616
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BINDING ENERGY; CATHODOLUMINESCENCE; CHEMICAL COMPOSITION; COPPER; COPPER OXIDES; EV RANGE; FILMS; FRACTALS; GRAPHITE; MORPHOLOGY; NANOSTRUCTURES; OXIDATION; SCANNING ELECTRON MICROSCOPY; SUBSTRATES; SURFACES; X-RAY PHOTOELECTRON SPECTROSCOPY