The Nobel Prize in Physics 2014 was awarded jointly to Isamu Akasaki, Hiroshi Amano and Shuji Nakamura "for the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources".
To cite this page MLA style: "The Nobel Prize in Physics 2014". Nobelprize.org. Nobel Media AB 2014. Web. 20 Oct 2014. <http://www.nobelprize.org/nobel_prizes/physics/laureates/2014/>