Japanese LED technology re-innovation research and development of tantalum and solar power

Recently, light-emitting diodes (LEDs) have gradually become mainstream lighting equipment, and all walks of life in Japan are committed to research and development of new products, hoping to become a new market winner. Professor Tokyo University of Japan, Otsuka No. 1 and special researcher Chuan Tianzhong developed a new silicone LED. Compared with the current gallium nitride (GaN) products, the brightness will be increased by 3 times and the material cost is only 40%. one. In the future, the University of Tokyo will cooperate with lighting equipment manufacturers to promote practical use as soon as possible.

LEDs usually use a gallium nitride substrate with a small amount of indium, but the research team at the University of Tokyo has ingeniously deliberately used silicone crystals commonly used in products such as large integrated circuits (LSI) as substrates. The silicone material does not emit light when it is energized, but after adding a small amount of boron, it begins to have luminescent properties. At present, the research team has tried two kinds of LEDs, yellow light and red light, and additionally used a silicon carbide substrate similar to silicone to make blue LED.

Under the same conditions of 1 amp and 1 amp current, the 1 watt power ratio of silicone LED to commercial LED is 0.2 lumens and 0.6 lumens. In addition, LEDs made of GaN are punctured, while silicone The system is fully illuminated, making it easier to make lighting.

On the other hand, the Japanese building materials factory Dongyang Shangcun Advance also developed solar-powered LED lighting equipment, which can maintain normal illumination even in the harsh weather, suitable for parking lots or apartment corridors that are not easy to install power.

Solar LEDs are loaded with electronic ICs, which automatically control the amount of electricity stored, as well as the illumination at night, which can effectively prevent the exhaustion of electricity in the harsh weather and prevent the problem of lighting. The solar LED uses the lithium battery of Toshiba, a global NAND Flash manufacturer. Product, the exchange cycle is about 10 years. The tentative price, including the pillars for installation, is approximately 500,000 yen (about 6,030 US dollars).

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