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

SC Ray, CW Pao, JW Chiou, HM Tsai, JC Jan, WF Pong, R McCann, SS Roy, P Papakonstantinou, JAD McLaughlin

Research output: Contribution to journalArticle

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Abstract

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.
LanguageEnglish
Pages033708
JournalJournal of Applied Physics
Volume98
Issue number3
DOIs
Publication statusPublished - Aug 2005

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x ray absorption
x ray spectroscopy
absorption spectroscopy
photoelectric emission
thin films
electronics
spectroscopy
photoelectron spectroscopy
valence
nitrogen
graphitization
carbon nitrides
pyridines
electronic structure
physics

Cite this

Ray, SC ; Pao, CW ; Chiou, JW ; Tsai, HM ; Jan, JC ; Pong, WF ; McCann, R ; Roy, SS ; Papakonstantinou, P ; McLaughlin, JAD. / Electronic properties of a-CNx thin films: An x-ray-absorption and photoemission spectroscopy study. In: Journal of Applied Physics. 2005 ; Vol. 98, No. 3. pp. 033708.
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abstract = "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.",
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Electronic properties of a-CNx thin films: An x-ray-absorption and photoemission spectroscopy study. / Ray, SC; Pao, CW; Chiou, JW; Tsai, HM; Jan, JC; Pong, WF; McCann, R; Roy, SS; Papakonstantinou, P; McLaughlin, JAD.

In: Journal of Applied Physics, Vol. 98, No. 3, 08.2005, p. 033708.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electronic properties of a-CNx thin films: An x-ray-absorption and photoemission spectroscopy study

AU - Ray, SC

AU - Pao, CW

AU - Chiou, JW

AU - Tsai, HM

AU - Jan, JC

AU - Pong, WF

AU - McCann, R

AU - Roy, SS

AU - Papakonstantinou, P

AU - McLaughlin, JAD

PY - 2005/8

Y1 - 2005/8

N2 - 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.

AB - 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.

U2 - 10.1063/1.1994933

DO - 10.1063/1.1994933

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SP - 033708

JO - Journal of Applied Physics

T2 - Journal of Applied Physics

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SN - 0021-8979

IS - 3

ER -