Returning professor Yun Feng: created a new era of the third generation of semiconductor lighting chip technology

"If we replace our 1/3 lighting into LED semiconductor lighting, then we can save a generation of Three Gorges project per year."." In front of the whiteboard hanging on the office wall, Professor of electronics and information engineering at Xi'an Jiao Tong University, 51, Yunfeng wrote and painted, told reporters.

"Always want to do something for the motherland, I will dedicate the rest of my life here."." 7 years ago, Yunfeng returned from the United States with years of academic accumulation and core technology. In recent years, he and his team for the first time in the world to solve the vertical structure of LED technology and industrialization, creating a new era of the third generation semiconductor lighting chip technology, but also fills up the blank in the field of technology.

Yunfeng (left, two) is directing scientific research

Homecoming is the call of the heart

In 2005, Yunfeng employed the high-tech company, founded by Massachusetts Institute of Technology, as chief component research and development engineer. "I want to contribute all of my expertise and accumulation to the upbringing of my country. The destiny of an individual can only be realized if it is closely linked to the destiny of the nation." Yunfeng's thoughts of returning home many times.

In August 2010, Yunfeng resigned from the company in the United States and returned home to Xi'an, where he was selected as a specialist in the national "thousand project".

Yunfeng earlier in the United States and Japan for many years of scientific research work, undertake the major project of wide band gap semiconductor materials and devices a number of international level, with core technology and intellectual property rights, has made great achievements in basic research of GaN and optoelectronics, was first proposed in the international buried AlGaN layer assisted laser sapphire stripping structure and manufacturing method, is internationally renowned semiconductor optoelectronic experts.

Although many years later, but on 2011 the Central Party School in Yunfeng or special training to remember the scene, "when the leaders talked about" the motherland needs you, welcome you to the motherland, the motherland hope you "," a lot of people plan to present scholars' eyes are moist. This is our countless students return purpose, but also the call of our hearts."

Technical conception gradually became reality

Early in the country, Yunfeng began to set up the Xi'an National Chiao Tung University solid state lighting engineering research center. Through unremitting efforts, Yunfeng led the team using advanced micro nano manufacturing technology, to solve the large size and high power density LED chip heat dissipation problem, a breakthrough in the core technology, to achieve a major innovation in the field of high-end chip forward-looking technology.

Just a few years time, the team published SCI (Science Citation Index) and more than 50 papers have been accepted and authorized by the international and domestic more than 30 patents and related research and continuous to assume a number of national "863" major projects and national key project. At the same time, the team has also focused on promoting a number of industrial technology research and achievements transformation project.

Third generation photonic crystal, micro nano vertical structure, LED semiconductor lighting materials and chip technology products, less than the power consumption of incandescent 1/10." By Yunfeng China's "863" hosted by the new material research project has the independent intellectual property rights, several times the light output power of this technology can make the single LED chip provides to the traditional chip or even hundreds of times, at the same time, chip life up to twenty thousand hours or more.

To have a clearer understanding of the semiconductor lighting industry in the west, Yunfeng for semiconductor lighting industry in the west the lack of international competitiveness and anxious: "improve the luminous efficiency and light power density, providing market need cost-effective products, is the power and the inevitable trend of the development of semiconductor lighting technology." At that time, the international large factories have realized mass production, and the domestic research and development stage is still in progress, and the industrialization is still blank.

In the multi joint promotion, China's first with independent intellectual property rights, the first of the third generation semiconductor lighting industry of chip technology high-tech enterprises to achieve mass production in the near future, but also the domestic and foreign technical level of narrow gap LED at least 10 years.

"All this benefits from the country's talent policy, thanks to the growing scientific and industrial environment, and this is a big stage for the cause."." Yunfeng said. From the tens of millions of dollars to hundred million yuan level discipline platform, the enterprise platform, then is the development of the whole industry chain has become the leading enterprises one billion yuan level of the industry, the third generation semiconductor lighting chip technology in Shaanxi Road of industrialization from the vision into reality.

"Western choice", the more dry, the more vigorous

"Here not only need talent, but also provide a broad platform for talent, we have here to display the ability of the world, the more dry, the more vigorous." From the first day of returning to the discipline platform construction, Yunfeng has regarded the introduction and training of talents and the establishment of high-level R & D teams as their important tasks.

Professor Yunfeng, who wants to introduce talent from overseas to the west, is a good example." Dr. Li Yufeng of the research center is a high-level talent introduced by Yunfeng from the United states.

Two or three people from the beginning to now, from home and abroad more than 30 high level teachers, full-time research staff and postgraduate team, Yunfeng led the rapid growth of the team, R & D work progress more quickly. Professor Yunfeng encourages us to think for ourselves, learn from each other and improve together. In a happy team atmosphere, we can fully explore each person's potential and stimulate greater creativity." Research Center Associate Professor Ding Wen said.

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