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Li Jinxi, Director of the Institute of Semiconductors, Chinese Academy of Sciences. Wang Guohong, Research Fellow, Institute of Semiconductors, Chinese Academy of Sciences. By age, they are two generations, but in the semiconductor energy-saving lighting business, they are also the "new recruits" in this high-tech field.
twinkle Twinkle Little Star. It is not the star in the sky, but the display of various electrical appliances. In the 1960s, when the Semiconductor Research Institute of the Chinese Academy of Sciences developed such a display light source technology that flashed red, yellow, blue, and green colors, they did not even think that such a display light source could become a huge energy-saving lighting industry in the future. Because at the international level, this business has only started in the 1980s.
Start
Like my motherland and every time in the past, Li Jinxi talked to the people who came to the museum many times about the process of the establishment of the Institute of Semiconductors of the Chinese Academy of Sciences. Every time I was equally excited. He said that the Institute of Semiconductors of the Chinese Academy of Sciences was established in the early 1960s, and semiconductor science and technology was listed as one of the four major emergency measures of the state's new technology. At various historical stages in the development of semiconductor technology in China, semiconductor companies have made outstanding contributions: the development of China's first germanium single crystal, silicon single crystal, gallium arsenide single crystal; the first germanium transistor, silicon planar transistor, solid component Designed and manufactured the first silicon single crystal furnace, zone furnace...
In the early 1990s, Li Jintao, who worked on semiconductor materials and optoelectronic devices for many years, was keenly aware of the concept of semiconductor lighting energy-saving technology during his first visit to the United States. This rapidly developing optoelectronic technology is such a A country with rapid economic development but facing energy pressure is very important. He is determined to do something in this regard. During the "10th Five-Year Plan" period, he became the head of the Institute of Semiconductors of the Chinese Academy of Sciences and the head of the semiconductor lighting engineering project.
At that time, the application of semiconductor light-emitting diode technology to lighting was only recently proposed in the international arena. At the end of the last century, the rapid development of this technology made a revolution in the field of lighting gestating, and a semiconductor lighting project was seized. The battle for the commanding heights of science is taking place globally. Faced with huge market opportunities, the United States, Japan, the European Union, South Korea and other countries and regions have launched their own national semiconductor lighting plans. Speaking of the development of semiconductor lighting technology in China, Li Jinxi said, "For China, we must firmly grasp the historical opportunity of the second lighting revolution. As a scientific researcher, we can shoulder such a heavy responsibility when the country needs it. A sense of mission."
Research
Semiconductor lighting is known as the second lighting revolution in the history of human lighting following incandescent lamps. The energy consumption of semiconductor lighting is 1/10 of that of ordinary incandescent lamps, and the lifetime can reach more than 100,000 hours. Incandescent lamps typically last between 500 hours and 1,000 hours, while semiconductor lighting is 100,000 hours, equivalent to 6 hours of lighting per day and 50 years of life. Experts estimate that if semiconductor lighting can occupy one-third of China's lighting market, it can save 200 billion kWh per year, equivalent to the power generation of two more Three Gorges power stations. At present, China's energy situation is grim, and the development of semiconductor lighting technology will provide new opportunities for energy conservation and green lighting development.
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