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Electronic properties of a-CNx thin films: An x-ray-absorption and photoemission spectroscopy study

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Ray, SC, Pao, CW, Chiou, JW, Tsai, HM, Jan, JC, Pong, WF, McCann, R, Roy, SS, Papakonstantinou, P and McLaughlin, JAD (2005) Electronic properties of a-CNx thin films: An x-ray-absorption and photoemission spectroscopy study. JOURNAL OF APPLIED PHYSICS, 98 (3). 033708. [Journal article]

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URL: http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JAPIAU000098000003033708000001&idtype=cvips&prog=normal

DOI: 10.1063/1.1994933


The electronic properties of amorphous carbon nitride were studied by x-ray-absorption near-edge structure (XANES) and valence-band photoelectron spectroscopy (PES). The nitrogen incorporation was found to induce graphitization, as evidenced by an increase of the sp(2) cluster in C and N K-edge XANES spectra. The structure is found to be similar to pyridine. Hybridized C-N bond lengths were determined from the position of the sigma(*) resonance of XANES spectra and the obtained results suggest sp(2) hybridization. A valence-band PES spectrum showed that the p-pi band became more intense than the p-sigma band upon higher at. % nitrogen addition, which confirmed the role played by the pi bonds in controlling the electronic structure of a-CNx films. (c) 2005 American Institute of Physics.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:282
Deposited By:Mrs Ann Blair
Deposited On:19 Oct 2009 13:11
Last Modified:15 Jun 2011 10:52

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