Why Blu ray LED won the Nobel prize for this year

Review: October 7th afternoon, the Royal Swedish Academy of Sciences announced the 2014 Nobel prize in physics awarded by Japanese scientists Akasaki Yong (IsamuAkasaki), Amano Hiroshi (HiroshiAmano) and the California University in Santa Barbara, the Japanese American scientist Nakamura Shuji (ShujiNakamura), in recognition of their contribution to the invention of a new energy efficient light source, the blue light emitting diode (LED), open up a new space for energy saving.

Yesterday, when Akasaki Yong, Tian Hao and Nakamura Shuji received the news of the prize in physics,, Dean of the school of information, Professor of Fudan University, the first time to congratulate professor Nakamura Shuji. Nakamura Shuji is a professor of Fudan University, member of the International Academic Committee of the Institute of information, in 2010, when he participated in the international assessment of our institute, we recommend that we should strengthen the study of lighting. "Boston is visiting Zheng Lirong said:" in the village, the biggest feature is the award-winning Professor, he pedal academic and industry, dedicated to the technology go through theory, so as to realize the application, this is probably the biggest reason he won the prize. "

Colin Hanffrey, a professor at the University of Cambridge, said: "this is a great achievement, and, in the case of, Tian Hao and Nakamura Shuji deserved it," said SirColinHumphreys. They invented the Blu ray LED technology for the development of bright and energy-saving lamps, paving the way for more efficient lighting technology. "

The newly developed blue LED light source and the combination of red and green LED light source, people can finally get more natural and practical white light source. The three winners will share a total of SEK 8 million ($1 million 200 thousand) bonus. They are also with the award since the award in 1901, a total of 196 outstanding scholars have been impressed on the long list.

Akasaki Yong, aged 85, in 1964 received a doctorate from Nagoya University, since 1981 as a professor at Nagoya University, is now a professor of life at the University of Japan, Nagoya University distinguished professor. 54 year old Tian Hao and Akasaki Yong is the relationship between teachers and students, is now a famous university professor in japan.

Akasaki Yong and Amano Hiroshi in Gan research, for the first time realized the Gan PN junction, for the use of gallium nitride materials to create a blue light-emitting diode laid the foundation. In November 10, 2009, Akasaki Yong won the 2009 Kyoto award in the field of cutting-edge technology. Kyoto award since 1985 to set up, for cutting-edge technology, basic science, thought and art of the 3 areas, the winner of the number of Nobel prize winners.

Not found, is the impact of human inventions

"Blue LED although it sounds not so mysterious or tall, but you can have a great influence on human society's achievements. Said Ji Xiangdong, Professor of physics at Shanghai Jiao Tong University.

Red and green diodes have been around for a long time, but to produce white light, red, blue, and green primary colors are needed. The original diode because the light energy is too low, it can only emit red light and green light, and blue light means that the need for higher energy light. In the late 80s, Amano Hiroshi worked with the Nagoya University at the end of the, when Mr Nakamura Shuji was an employee of a chemical company. He put forward the idea of preparation of Gan blue light-emitting diode, only three years after the proposed this idea, Nakamura Shuji will be in the "applied physics letters published the first article" English article: for the growth of metal organic chemical vapor deposition of GaN novel. This made it a sensation in the world semiconductor industry and the scientific community of the world at that time many large companies and famous universities and research institutes in semiconductor blue light source film material preparation process of headache, and Gan is the most wide band optical materials with hope III-V semiconductor materials.