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Japan developed a red LED that does not use rare elements
- Jun 08, 2017 -

According to Japan's Kyodo News reported on June 22, Japan's Tokyo University of Technology and Kyoto University research group released on the 21st reported that has not developed the use of expensive rare elements of the red light-emitting semiconductors.

According to the Japan Kyodo News reported on June 22, Japan's Tokyo University of Technology and Kyoto University research group 21, said the news has been developed without the use of expensive rare elements of the red light-emitting semiconductors. It is reported that the future is expected to use the Earth's rich reserves of nitrogen nitride, at low cost for use in red light-emitting diode (LED) and solar cells. The research team set the zinc-containing nitride as a target for the semiconductor candidate material, lists 583 species lists, and predicts the crystal structure and stability from the supercomputer.

LED linear light .jpg

June 21, Tokyo University of Technology and Kyoto University's research team said it has developed a high-priced rare elements do not use red light-emitting semiconductors. The picture shows a new nitride emitting red light in light

Researchers in which selected a suitable for the red LED material, in 1200 degrees, about 50,000 pressure under the conditions of synthesis. The substance emits the expected red light in the light and is found to be expected to become a red LED material.

The use of low-cost nitride LED has been successfully achieved blue and green, but the red has not been the actual use of the existence of the need to use rare elements and difficult to abandon the problem of raw materials.

"This material is made of rich elements such as calcium, zinc and nitrogen, and you will want to study a more simple synthesis and promote practical use in the future," said Shih Keng, a professor of computational materials science at Tokyo Institute of Technology.

 

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