Hyderabad. “Gallium Nitride is definitely the material of the future.” According to Nobel Prize winner Hiroshi Amano, the white Light Emitting Diodes (LED), using Gallium Nitride, has revolutionised display and energy efficiencies, and can meet the needs of smart and sustainable technologies in the years to come.
The 57-year-old Japanese physicist and inventor, who specialises in the field of semiconductor technology, was in Hyderabad on Thursday to speak at the Hyderabad Lecture Series, organised by the University of Hyderabad and sponspored by Insurance Regulatory and Development Authority of India (IRDA).
Speaking to students and staff of the university on ‘Blue LEDs and Transformative Electronic for Developing Smart Society’, Amano said that the future challenge was to develop technologies that are more cost effective and LED was one such technology that was poised to transforming the lives of over 1.5 billion people in the world, who lack access to electric grids, for the better. He added that the utra violet technology based on Gallium Nitride had contributed to purification of water.
Amano won the Nobel Prize for Physics in 2014 along with colleagues Isamu Akasasi and Shuji Nakamura for “the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources”. Their path breaking work of fabricating Gallium Nitride LED broke new ground in creating blue LEDs and paving the way for development of bright energy saving white light sources.
The LEDs last up to 100,000 hours against 10,000 hours for fluorescent light and just 1,000 for incandescent bulbs. According to Amano, the white LED lamps are becoming more efficient by the day.
Amano started as an undergraduate student in 1982 with professor Akasaki’s group and had been pursuing research in characterisation and devise application of group III nitride semiconductors, which were used in blue LEDs. Presently, he is a professor in the Graduate School of Engineering of Nagoya University in Japan.

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