| 查看: 280 | 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
一志愿沪9，生物学326求调剂
已经有6人回复
-
296求调剂
已经有12人回复
-
生物学调剂
已经有9人回复
-
0854求调剂
已经有6人回复
-
求调剂推荐
已经有6人回复
-
材料299专硕求调剂
已经有17人回复
-
294求调剂
已经有4人回复
-
297，工科调剂?河南农业大学本科
已经有11人回复
-
22专硕求调剂
已经有11人回复
-
284求调剂
已经有20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
