钻石可能成为理想的半导体
文章来源:未知 文章作者:enread 发布时间:2016-05-25 08:37 字体: [ ]  进入论坛
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Along with being a "girl's best friend," diamonds also have remarkable1 properties that could make them ideal semiconductors3. This is welcome news for electronics; semiconductors are needed to meet the rising demand for more efficient electronics that deliver and convert power. The thirst for electronics is unlikely to cease and almost every appliance or device requires a suite4 of electronics that transfer, convert and control power. Now, researchers have taken an important step toward that technology with a new way to dope single crystals of diamonds, a crucial process for building electronic devices.
 
"We need the devices to manipulate the power in the way that we want," said Zhengqiang (Jack) Ma, an electrical and computer engineering professor at the University of Wisconsin-Madison. He and his colleagues describe their new method in the Journal of Applied5 Physics, from AIP Publishing. 
 
For power electronics, diamonds could serve as the perfect material. They are thermally6 conductive, which means diamond-based devices would dissipate heat quickly and easily, foregoing the need for bulky and expensive methods for cooling. Diamond can also handle high voltages and power. Electrical currents also flow through diamonds quickly, meaning the material would make for energy efficient devices.
 
But among the biggest challenges to making diamond-based devices is doping, a process in which other elements are integrated into the semiconductor2 to change its properties. Because of diamond's rigid7 crystalline structure, doping is difficult. 
 
Currently, you can dope diamond by coating the crystal with boron and heating it to 1450 degrees Celsius8. But it's difficult to remove the boron coating at the end. This method only works on diamonds consisting of multiple crystals stuck together. Because such polydiamonds have irregularities between the crystals, single-crystals would be superior semiconductors.


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1 remarkable 8Vbx6     
adj.显著的,异常的,非凡的,值得注意的
参考例句:
  • She has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。
  • These cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。
2 semiconductor Uzuwq     
n.半导体
参考例句:
  • In the beginning,engineers hoped to use semiconductor lasers.在开始时,工程师们希望能够利用半导体激光器。
  • The main agent of the company brand semiconductor sales.本公司主要代理各品牌半导体销售。
3 semiconductors 0e1983fea761e849266037e7a40cb125     
n.半导体( semiconductor的名词复数 )
参考例句:
  • Crystals may be insulators, semiconductors, or conductors. 晶体可以是绝缘体,半导体,或导体。 来自辞典例句
  • Semiconductors containing such impurities are called p-type semiconductors. 含有这类杂质的半导体叫做P型半导体。 来自辞典例句
4 suite MsMwB     
n.一套(家具);套房;随从人员
参考例句:
  • She has a suite of rooms in the hotel.她在那家旅馆有一套房间。
  • That is a nice suite of furniture.那套家具很不错。
5 applied Tz2zXA     
adj.应用的;v.应用,适用
参考例句:
  • She plans to take a course in applied linguistics.她打算学习应用语言学课程。
  • This cream is best applied to the face at night.这种乳霜最好晚上擦脸用。
6 thermally 4503c689965bc42ad92334e583f5d8c3     
热地
参考例句:
  • The magnetizing field is then removed while the body is thermally isolated. 在该物体热绝缘时把磁场撤去。
  • They could thermally desorb these ions by heating the foil to red heat. 他们通过加热金属箔至红热以解吸这些离子。
7 rigid jDPyf     
adj.严格的,死板的;刚硬的,僵硬的
参考例句:
  • She became as rigid as adamant.她变得如顽石般的固执。
  • The examination was so rigid that nearly all aspirants were ruled out.考试很严,几乎所有的考生都被淘汰了。
8 Celsius AXRzl     
adj.摄氏温度计的,摄氏的
参考例句:
  • The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
  • The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。
TAG标签: power devices diamonds
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