Use of nanowires for LED’s
27 March 2008Conventional LEDs consists of multiple crystalline semiconductors and these LED’s are used in small applications including torches, bicycle lights and lamps. When light is passed through LEDs , one-third of the electrical energy is converted into light. These conventional light emitting devices are still not used for large applications due to the defects in crystal structure.
Even the comercial LEDs used for various applications might have millions of defects per square centimeter. Researchers at Sweden based Lund University are working on nanotechnology based LED’s and are hopeful that such defects free LEDs will be available in the market within few years.
Researchers have presented their finding at recently held International Conference on Nanoscience and Nanotechnology in Melbourne. Scientists beleive that millions of nanowires of 2 micrometer length and 200 nanometer diameter grown from gallium arsenide and indium gallium will be perfect for producing LEDs.
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