Japanese physicist Isamu Akasaki, who won the Nobel Prize in Physics in 2014 for inventing the world's first efficient blue light-emitting diodes, has died at the age of 92, the University of Meijo said on Friday.
Akasaki, a professor at the university, was known for his invention, which contributed to bright and energy-efficient white light sources commonly known as LED lamps.
He died of pneumonia thursday morning at a hospital in nagoya, central Japan, the university said.
When Akasaki was a professor at the University of Nagoya, he worked with Amano to produce gallium niderrür crystals and in 1989 managed to invent the world's first blue LED.
Akasaki was honored with the Purple Ribbon Medal awarded by the Japanese government in 1997 to those who contributed to academic and artistic developments.