Quantitative evaluation of sp/sp2 hybridization ratio in cluster-assembled carbon films by in situ near edge X-ray absorption fine structure spectroscopy

被引：34
作者：
Ravagnan, L.
Bongiorno, G.
Bandiera, D.
Salis, E.
Piseri, P.
Milani, P.
Lenardi, C.
Coreno, M.
de Simone, M.
Prince, K. C.
机构：
[1] Univ Milan, CIMAINA, I-20133 Milan, Italy
[2] Univ Milan, Dipartimento Fis, INFM, CNR, I-20133 Milan, Italy
[3] CIMAINA, I-20134 Milan, Italy
[4] CNR, INFM, Ist Fisiol Gen & Chim Biol, I-20134 Milan, Italy
[5] Gas Phase Beamline ELETTRA, CNR, INFM, Lab Nazl TASC, I-34012 Trieste, Italy
[6] CNR, IMIP, Area Ric Roma 1, I-34012 Trieste, Italy
[7] Sincrotrone Trieste, I-34012 Trieste, Italy
来源：
CARBON | 2006年 / 44卷 / 08期
关键词：
carbon clusters; carbyne; X-ray photoelectron spectroscopy; Raman spectroscopy; bonding;
D O I：
10.1016/j.carbon.2005.12.015
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present a near edge X-ray absorption fine structure spectroscopy characterization of nanostructured carbon films containing carbynoid species. By a careful data analysis and normalization of the spectra at the carbon K-edge we have quantitatively evaluated the extent of valence sp hybridization of the films. A sp/sp(2) ratio between 10% and 25% has been obtained. This result allowed the evaluation of the ratio between the sp and sp(2) Raman cross section at different excitation laser wavelengths. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1518 / 1524
页数：7
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