In the 1960s and 1970s Alferov continued his work on the physics and technology of semiconductor heterostructures in his lab at the Ioffe Institute. Alferov's investigations of injection properties of semiconductors and his contributions to the development of lasers, solar cells, LEDs, and epitaxy processes, led to the creation of modern heterojunction physics and electronics. The development of semiconductor heterojunctions revolutionized semiconductor design, and had a range of immediate commercial applications including LEDs, barcode readers and CDs. Hermann Grimmeiss of the Royal Swedish Academy of Sciences, which awards Nobel prizes, said: "Without Alferov, it would not be possible to transfer all the information from satellites down to the Earth or to have so many telephone lines between cities."