Evidence for trans-polyacetylene in nanocrystalline diamond films from H-D isotropic substitution experiments

被引：83

作者：

Pfeiffer, R

Kuzmany, H

Salk, N

Günther, B

机构：

[1] Univ Vienna, Inst Mat Phys, A-1090 Vienna, Austria

[2] Fraunhofer IFAM, D-28359 Bremen, Germany

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 23期

关键词：

D O I：

10.1063/1.1582352

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Raman spectra of nanocrystalline diamond (NCD) films show a peak around 1140 cm(-1) that is usually considered to be a fingerprint of a NCD phase in the sample. From recent studies, it was suggested that this line is due to trans-polyacetylene in the films. We present Raman spectra of deuterated NCD films produced from a D-2 /CD4/Ar plasma. In these spectra, the 1140 cm(-1) mode has disappeared and a peak at 860 cm(-1) has emerged. The downshift of the peak at 1140 cm(-1) is taken as a proof for its origin from trans-polyacetylene. (C) 2003 American Institute of Physics.

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页码：4149 / 4150

页数：2

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