# Nick Holonyak

Nick Holonyak Jr. (/hʌlɒnjæk/ huh-LON-yak; November 3, 1928 – September 18, 2022) was an American engineer and educator. He is noted particularly for his 1962 invention and first demonstration of a semiconductor laser diode that emitted visible light. This device was the forerunner of the first generation of commercial light-emitting diodes (LEDs). He was then working at a General Electric research laboratory near Syracuse, New York. He left General Electric in 1963 and returned to his alma mater, the University of Illinois at Urbana-Champaign, where he later became John Bardeen Endowed Chair in Electrical and Computer Engineering and Physics.

## Early life and career

Nick Holonyak Jr. was born in Zeigler, Illinois, on November 3, 1928. His parents were Rusyn immigrants. His father worked in a coal mine. Holonyak was the first member of his family to receive any type of formal schooling. He once worked 30 straight hours on the Illinois Central Railroad before realizing that a life of hard labor was not what he wanted and he would prefer to go to school instead. According to a Chicago Tribune article in 2003, "The cheap and reliable semiconductor lasers critical to DVD players, bar code readers and scores of other devices owe their existence in some small way to the demanding workload thrust upon Downstate railroad crews decades ago."
Holonyak earned his bachelor's (1950), master's (1951), and doctoral (1954) degrees in electrical engineering from the University of Illinois at Urbana-Champaign. Holonyak was John Bardeen's first doctoral student there. In 1954, Holonyak went to Bell Telephone Laboratories, where he worked on silicon-based electronic devices. From 1955 to 1957 he served with the U.S. Army Signal Corps.
From 1957 to 1963 he was a scientist at the General Electric Company's Advanced Semiconductor Laboratory near Syracuse, New York. Here he invented, fabricated, and demonstrated the first visible light laser diode on October 9, 1962. He grew crystals of the alloy GaAs$_{0.60}$P$_{0.40}$; a GaAs laser diode that worked in the infrared had recently been demonstrated by his General Electric colleague Robert N. Hall. The GaAs$_{0.60}$P$_{0.40}$ laser diode worked at low temperatures, but the device still functioned as a light-emitting diode at room temperature. The demonstration of red light emission from the diode inspired the article "Light of Hope – or Terror" in Reader's Digest. GaAsP was the material used for the first generation of commercial LEDs that came to market a few years later.

## University of Illinois

In 1963, Holonyak became a professor at the University of Illinois. In 1993, he was named the John Bardeen Endowed Chair Professor of Electrical and Computer Engineering and Physics at the University of Illinois at Urbana-Champaign. He investigated methods for manufacturing quantum dot lasers. He and Dr. Milton Feng ran a transistor laser research center at the university funded by $6.5 million from the United States Department of Defense through DARPA. Holonyak retired in 2013.
Ten of his 60 former doctoral students have developed new uses for LED technology at Philips Lumileds Lighting Company in Silicon Valley.

## Inventions

In addition to introducing the III-V alloy LED, Holonyak held 41 patents. His other inventions include the red-light semiconductor laser, usually called the laser diode (used in CD and DVD players and cell phones) and the shorted emitter p-n-p-n switch (used in light dimmers and power tools).
In 2006, the American Institute of Physics decided on the five most important papers in each of its journals since it was founded 75 years ago. Two of these five papers, in the journal Applied Physics Letters, were co-authored by Holonyak. The first one, co-authored with S. F. Bevacqua in 1962, announced the creation of the first visible-light laser diode. The second, co-authored primarily with Milton Feng in 2005, announced the creation of a transistor laser that can operate at room temperatures. Holonyak predicted that his LEDs would replace the incandescent light bulb of Thomas Edison in the February 1963 issue of Reader's Digest, and as LEDs improve in quality and efficiency they are gradually replacing incandescents as the bulb of choice.

## Awards and honors

Holonyak was presented awards by George H. W. Bush, George W. Bush, Emperor Akihito of Japan, and Vladimir Putin. He also received the Global Energy International Prize, the National Medal of Technology, the Order of Lincoln Medallion, and the 2004 Lemelson–MIT Prize, also worth $500,000. Many colleagues expressed their belief that he deserved the Nobel Prize for his invention of the GaAsP laser and LED. On this subject, Holonyak said, "It's ridiculous to think that somebody owes you something. We're lucky to be alive, when it comes down to it." In October 2014, Holonyak reversed his stance by stating "I find this one insulting" in reaction to news that the inventors of the blue LED were awarded the 2014 Nobel Prize in Physics, instead of his fellow LED researchers.
* 1973: Elected a member of the National Academy of Engineering for contributions to development of semiconductor controlled rectifiers, light emitting diodes and diode lasers
* 1984: Elected to the National Academy of Sciences
* 1989: IEEE Edison Medal for "an outstanding career in the field of electrical engineering with contributions to major advances in the field of semiconductor materials and devices". Holonyak's former student, Russell Dupuis from the Georgia Institute of Technology, won this same award in 2007.
* 1992: Charles Hard Townes Award of the Optical Society of America
* 1993: NAS Award for the Industrial Application of Science
* 1995: $500,000 Japan Prize for "outstanding contributions to research and practical applications of light emitting diodes and lasers"
* 2001: Frederic Ives Medal of the Optical Society of America
* 2003: IEEE Medal of Honor
* 2005: Inducted as a Laureate of The Lincoln Academy of Illinois and awarded the Order of Lincoln (the State's highest honor) by the Governor of Illinois in the area of Science
* June 2006: Two of Holonyak's papers were chosen by the editors of Applied Physics Letters as among the five most important published since the journal's founding in 1962.
* November 9, 2007: Historical marker installed on the University of Illinois campus recognizing his development of the quantum-well laser. It is located on the Bardeen Engineering Quadrangle near where the old Electrical Engineering Research Laboratory used to stand.
* 2008: Inducted into the National Inventors Hall of Fame (Announced February 14, 2008) (May 2–3, 2008 at Akron, Ohio)
* 2015: Charles Stark Draper Prize for Engineering "for the invention, development, and commercialization of materials and processes for light-emitting diodes (LEDs)"
* 2015: Elected OSA Honorary Member, "for his numerous technology innovations advancing solid state lighting, the Internet, high-performance computing, visible LEDs and quantum well diode lasers."
* September 2018: Village of Glen Carbon, Illinois, placed an honorary street sign on behalf of Holonyak, a former resident
* 2021: Queen Elizabeth Prize for Engineering "for the creation and development of LED lighting, which forms the basis of all solid-state lighting technology". He shares the prize with his former students M. George Craford and Russell D. Dupuis, and Isamu Akasaki and Shuji Nakamura, inventors of the Blue LED.

## Personal life

Holonyak and his wife, Katherine, were married for over 60 years. He died on September 18, 2022, in Urbana, Illinois, at the age of 93.