According to Japan's Kyodo News Agency reported on June 22, Japan's Tokyo Polytechnic University and Kyoto University research group on the 21st released news that has developed a red light-emitting semiconductor that does not use expensive rare elements. It is reported that in the future is expected to use the earth's reserves of nitrogen nitride, low-cost use of the red light-emitting diode (LED) and solar cells. The research team set the zinc nitride as a candidate for the semiconductor candidate substance, a list of 583 species list, 21 species were selected from the supercomputer prediction of crystal structure and stability. On June 21, a team at Tokyo Institute of Technology and Kyoto University said they have developed red-emitting semiconductors that do not use expensive rare elements. The picture shows a new nitride that emits red light under light Researchers selected a suitable material for the red LED, at 1200 degrees, about 50,000 atmospheric pressure conditions. The material emits the expected red light under 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 rare elements and the use of raw materials difficult to waste problems. Shikang, a professor of computational materials science at Tokyo Institute of Technology, said: "The material is made of elements rich in calcium, zinc and nitrogen, etc. In the future, we wanted to study simpler synthesis methods and promote practical application."
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Japan has developed a red LED that does not use rare elements