Polycrystalline diamond synthesis by means of high power pulsed plasma glow discharge CVD

被引：15
|
作者：
Sciortino, S
Lagomarsino, S
Pieralli, F
Borchi, E
Galvanetto, E
机构：
[1] Ist Nazl Fis Nucl, I-50139 Florence, Italy
[2] Univ Florence, Dipartimento Energet, I-50139 Florence, Italy
[3] CNR, Ist Ric Onde Elettromagnet, I-50127 Florence, Italy
[4] Dipartimento Meccan & Tecnol Ind, I-50139 Florence, Italy
来源：
DIAMOND AND RELATED MATERIALS | 2002年 / 11卷 / 3-6期
关键词：
pulsed glow discharge CVD; diamond films; high pressure crystal growth; micro Raman spectroscopy;
D O I：
10.1016/S0925-9635(01)00630-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A pulsed glow discharge reactor for chemical vapour deposition of high quality diamond films is presented. The Raman quality and the morphology of the diamond films exhibit a strong dependence on the discharge pulse shape. This result is explained with a simple model involving the average current density j(0) and the average squared amplitude of the pulse (Deltaj(2)) as relevant parameters. This CVD method does not require any substrate pretreatment, and the nucleation rate is seen to increase with current density methane concentration and pressure. The quality of the deposits is independent of the inter-electrode distance in the 2535 mm range. The influence of the substrate temperature on the diamond morphology and on diamond etching from the substrate is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：573 / 578
页数：6
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