White light-emitting diodes: History, progress, and future
SCIE
SCOPUS
- Title
- White light-emitting diodes: History, progress, and future
- Authors
- Cho, J; Park, J.H; Kim, J.K; Schubert, E.F.
- Date Issued
- 2017-03
- Publisher
- Wiley Online Library
- Abstract
- About twenty years ago, in the autumn of 1996, the first white light-emitting diodes (LEDs) were offered for sale. These then-new devices ushered in a new era in lighting by displacing lower-efficiency conventional light sources including Edison's venerable incandescent lamp as well as the Hg-discharge-based fluorescent lamp. We review the history of the conception, improvement, and commercialization of the white LED. Early models of white LEDs already exceeded the efficiency of low-wattage incandescent lamps, and extraordinary progress has been made during the last 20 years. The review also includes a discussion of advances in blue LED chips, device architecture, light extraction, and phosphors. Finally, we offer a brief outlook on opportunities provided by smart LED technology.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/37918
- DOI
- 10.1002/LPOR.201600147
- ISSN
- 1863-8880
- Article Type
- Article
- Citation
- LASER & PHOTONICS REVIEWS, vol. 11, no. 2, page. 1600147, 2017-03
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