| 查看: 272 | 回复: 7 | |||
| 当前主题已经存档。 | |||
[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
085700资源与环境308求调剂
已经有7人回复
-
265求调剂
已经有5人回复
-
279分求调剂 一志愿211
已经有3人回复
-
求调剂
已经有3人回复
-
一志愿吉林大学材料学硕321求调剂
已经有12人回复
-
286分人工智能专业请求调剂愿意跨考！
已经有3人回复
-
329求调剂
已经有5人回复
-
申请回稿延期一个月，编辑同意了。但系统上的时间没变，给编辑又写邮件了，没回复
已经有4人回复
-
材料学硕318求调剂
已经有5人回复
-
一志愿中国海洋大学，生物学，301分，求调剂
已经有6人回复
 |
2楼2008-12-27 19:01:50
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
6楼2008-12-27 22:42:02
peechtrees
铜虫 (初入文坛)
- 应助: 0 (幼儿园)
- 金币: 140.9
- 帖子: 33
- 在线: 4.3小时
- 虫号: 655075
- 注册: 2008-11-15
- 性别: GG
- 专业: 河流海岸动力学与泥沙研究
7楼2008-12-28 11:30:38
hobbyzhang
荣誉版主 (文坛精英)
小木虫首席大法官
- 博学EPI: 6
- 应助: 15 (小学生)
- 贵宾: 6.416
- 金币: 47398.2
- 散金: 2444
- 红花: 150
- 沙发: 93
- 帖子: 24353
- 在线: 1838.4小时
- 虫号: 410241
- 注册: 2007-06-22
- 专业: 马克思主义其他学科
- 管辖: 虫友互识
8楼2008-12-28 11:39:50
