Electronic properties of a-CNx thin films:: An x-ray-absorption and photoemission spectroscopy study -: art. no. 033708

被引：43
|
作者：
Ray, SC [1 ]
Pao, CW
Chiou, JW
Tsai, HM
Jan, JC
Pong, WF
McCann, R
Roy, SS
Papakonstantinou, P
McLaughlin, JA
机构：
[1] Tamkang Univ, Dept Phys, Tamsui 251, Taiwan
[2] Univ Ulster, Sch Elect & Mech Engn, NRI, Newtownabbey BT37 0QB, Antrim, North Ireland
来源：
JOURNAL OF APPLIED PHYSICS | 2005年 / 98卷 / 03期
关键词：
D O I：
10.1063/1.1994933
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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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