研究人员砝码新式oled光源-凯发k8官网

研究人员砝码新式oled光源
文章来源:未知 文章作者:enread 发布时间:2011-11-02 05:41 字体: [ ] 
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in this month's edition of physics world, paul blom and ton van mol from the holst centre in eindhoven describe a way of creating thin, flexible sheets of organic light-emitting diodes (oleds) using a cheap, newspaper-style "roll-to-roll" printing process. these bendable materials could 1(驱逐,取代) the conventional light bulb and revolutionize the way we 2 our surroundings, being used for everything from 3 tiles and strips in homes and offices to windows that can simulate sunrise and sunset.

rather than the traditional solid, "4" leds that we are used to seeing in display signs, traffic lights and car 5, oleds can be easily dissolved in a 6(溶剂) and so sprayed onto a roll of thin, flexible, plastic foil in the same way that newspapers are printed.

"many companies recognize the potential of oleds and are investing heavily in research and development in the hope that when this technology finally takes off, they will be in pole position to take advantage," blom and van mol write.

the bottom layer of an oled, which acts as a support, is a flexible material such as a polymer foil that has the electrodes and the light-emitting layer sandwiched on top to make up the complete device. each layer is between 5 and 200 nanometres thick.

traditional leds have so far failed to become a 7 alternative to light bulbs because, despite being highly efficient, they have to be fabricated in clean rooms and so are expensive to make. but with about 20 per cent of the electricity the world consumes going on lighting, blom and van mol state that any new, more-efficient lighting technology could greatly reduce global energy consumption.

oleds are 8 to take over from the light bulb as their spray-on production makes them a faster and cheaper alternative to traditional leds and can be produced en mass through the "roll-to-roll" newspaper technique.

there are, however, several 9 that need to be overcome before oleds become a commercial commodity, such as depositing the materials onto a thin film sheet with high precision, managing the properties of the different materials and, most importantly, keeping water out of the device -- oleds have a barrier requirement up to a thousand times more demanding that food packaging.

blom and van mol describe how their institution, along with several other research institutes and commercial companies, is at the forefront of combating these problems and delivering oleds into the hands of the consumer.



点击收听单词发音收听单词发音  

1 5jdx2     
vt.剥夺,取代,驱逐
参考例句:
  • the committee wanted to oust him from the union.委员会想把他从工会中驱逐出去。
  • the leaders have been ousted from power by nationalists.这些领导人被民族主义者赶下了台。
2 zcsz4     
vt.照亮,照明;用灯光装饰;说明,阐释
参考例句:
  • dreams kindle a flame to illuminate our dark roads.梦想点燃火炬照亮我们黑暗的道路。
  • they use games and drawings to illuminate their subject.他们用游戏和图画来阐明他们的主题。
3 cpszpl     
n.照明,光线的明暗,舞台灯光
参考例句:
  • the gas lamp gradually lost ground to electric lighting.煤气灯逐渐为电灯所代替。
  • the lighting in that restaurant is soft and romantic.那个餐馆照明柔和而且浪漫。
4 p6sxn     
adj.无生物的;无机的
参考例句:
  • the fundamentals of inorganic chemistry are very important.无机化学的基础很重要。
  • this chemical plant recently bought a large quantity of inorganic salt.这家化工厂又买进了大量的无机盐。
5 f46872fc1b5f08e9d32bd107be1df829     
(仪器上显示温度、压力、耗油量等的)指针( indicator的名词复数 ); 指示物; (车辆上的)转弯指示灯; 指示信号
参考例句:
  • the economic indicators are better than expected. 经济指标比预期的好。
  • it is still difficult to develop indicators for many concepts used in social science. 为社会科学领域的许多概念确立一个指标仍然很难。
6 rfqz9     
n.溶剂;adj.有偿付能力的
参考例句:
  • gasoline is a solvent liquid which removes grease spots.汽油是一种能去掉油污的有溶解力的液体。
  • a bankrupt company is not solvent.一个破产的公司是没有偿还债务的能力的。
7 mi2wz     
adj.可行的,切实可行的,能活下去的
参考例句:
  • the scheme is economically viable.这个计划从经济效益来看是可行的。
  • the economy of the country is not viable.这个国家经济是难以维持的。
8 slhzbu     
a.摆好姿势不动的
参考例句:
  • the hawk poised in mid-air ready to swoop. 老鹰在半空中盘旋,准备俯冲。
  • tina was tense, her hand poised over the telephone. 蒂娜心情紧张,手悬在电话机上。
9 ef026c612e29da4e5ffe480a8f65b720     
n.障碍( hurdle的名词复数 );跳栏;(供人或马跳跃的)栏架;跨栏赛
参考例句:
  • in starting a new company, many hurdles must be crossed. 刚开办一个公司时,必须克服许多障碍。 来自《简明英汉词典》
  • there are several hurdles to be got over in this project. 在这项工程中有一些困难要克服。 来自辞典例句
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