| 查看: 373 | 回复: 7 | |||
| 当前主题已经存档。 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
[交流]
20金币求文献
|
|||
|
Nanocrystalline Diamond as a Dielectric for SOD Applications Author(s): Mose Bevilacqua, Niall Tumilty, Aysha Chaudhary, Haitao Ye, James E Butler, Richard B Jackman Nanocrystalline diamond (NCD) has been grown on oxide coated silicon wafers by microwave plasma assisted chemical vapour deposition using a novel seeding technique followed by optimised growth conditions, and leads to a highly-dense form of this material with grain sizes around 100nm for films approximately 1.5 microns thick. The electrical properties of these films have been investigated using Impedance Spectroscopy, which enables the contributions from sources characterised by differing capacitances, such as grain boundaries and grain interiors, to be isolated. After an initial acid clean the electrical properties of the film are not stable, and both grain boundaries and grains themselves contribute to the frequency dependant impedance values recorded. However, following mild oxidation grain boundary conduction is completely removed and the films become highly resistive (>1013 ohm/sq). This is most unusual, as conduction through NCD material is more normally dominated by grain boundary effects. Interestingly, the AC properties of these films are also excellent with a dielectric loss value (tan ?) as low as 0.002 for frequencies up to 10MHz. The dielectric properties of these NCD films are therefore as good as high quality free-standing (large grain) polycrystalline diamond films, and not too dissimilar to single crystal diamond, and are therefore ideally suited to future ?silicon-on-diamond? applications. [ Last edited by zzgyb on 2009-2-18 at 15:58 ] |
回复此楼» 猜你喜欢
咱们一起用铁证分析2026国家社科基金中标与否
已经有22人回复
-
是这周出结果还是下周出结果？
已经有4人回复
-
售SCI一区文章，我:8.O.55.1.O.54,科目齐全,可伽急
已经有5人回复
-
售SCI一区T0P文章，我:8.O55.1.O.54,科目全,可十急
已经有6人回复
-
欢迎发来filecode的Mz6后的代码验证其规律
已经有49人回复
-
哪位老哥知道今年的国自然具体哪一天放榜？
已经有5人回复
-
各位道友，我要去昆明玩几天，回来见。
已经有7人回复
-
filecode
已经有10人回复
-
奇怪，两个人的filecode固定段从头到尾一模一样
已经有11人回复
-
有时候，自然基金真的不能太认真 （我的申报经验）
已经有8人回复
6楼2008-12-27 22:42:02
3楼2008-12-27 19:08:25
jiaminl
铁杆木虫 (知名作家)
- 应助: 0 (幼儿园)
- 金币: 7168.5
- 红花: 3
- 帖子: 8220
- 在线: 161.3小时
- 虫号: 663795
- 注册: 2008-11-27
- 专业: 药理学其他科学问题
4楼2008-12-27 22:24:45
5楼2008-12-27 22:40:56
