The blue LED - its history and technology
This talk, inspired by the recent Nobel prize in Physics awarded to Akasaki, Amano, and
Nakamura, will review the history and technology of the blue light-emitting diode. Despite the early work of Pankove et al. in obtaining violet luminescence from GaN in 1971, it was not until the early 1990’s that the p-type doping problem of this wide gap semiconductor was solved. This opened the door to on-going development of efficient blue and UV LEDs. The significance of this can hardly be understated. Almost one fifth of residential and commercial electricity consumption is currently associated with inefficient lighting. Solid state lighting promises to secure major energy savings. This talk will explain why the properties of GaN make it eminently suitable for LED applications and will touch upon other applications of GaN.
Date and Time
Location
Hosts
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- 161 Warren St
- Newark, New Jersey
- United States 07102
- Building: ECEC
- Room Number: 202
- Click here for Map
- Contact Event Host
- Dr. Durga Misra, dmisra@njit.edu
- Co-sponsored by AP01/MTT17
- Starts 30 October 2014 02:00 PM UTC
- Ends 02 December 2014 10:00 PM UTC
- No Admission Charge
Speakers
Alan E. Delahoy of NJIT
The blue LED - its history and technology
This talk, inspired by the recent Nobel prize in Physics awarded to Akasaki, Amano, and Nakamura, will review the history and technology of the blue light-emitting diode. Despite the early work of Pankove et al. in obtaining violet luminescence from GaN in 1971, it was not until the early 1990’s that the p-type doping problem of this wide gap semiconductor was solved. This opened the door to on-going development of efficient blue and UV LEDs. The significance of this can hardly be understated. Almost one fifth of residential and commercial electricity consumption is currently associated with inefficient lighting. Solid state lighting promises to secure major energy savings. This talk will explain why the properties of GaN make it eminently suitable for LED applications and will touch upon other applications of GaN.
Biography: Alan E. Delahoy is currently a Research Professor in the Department of Physics at NJIT and General Manager of the CNBM New Energy Materials Research Center. He received a B.A. in Physics from the University of Oxford and a Ph.D. in Electrical Engineering from Rutgers University. He has extensive experience in semiconductors, thin-film technologies and photovoltaics. He is currently working on thin-film CdTe materials and devices, and is building an advanced deposition system for TCO research. He was previously Vice President, R&D for New Millennium Solar Equipment Corp. and for EPV Solar, Inc., and an Associate Scientist at Brookhaven National Laboratory. He has been Principal Investigator on many contracts and awards from NREL, DOE, NSF, NIST, and NJ BPU. He is the author or co-author of over 130 technical articles and one book chapter, and holds 13 US patents in the areas of device structures, thin-film deposition, a-Si:H, and Cu(In,Ga)Se2. He has served on numerous technical committees, and also as a conference organizer and proceedings editor, and as a reviewer for multiple journals. He is a member of the American Vacuum Society and the IEEE.
Email:
Address:Room 202/204 Microelectronics Center, NJIT, University Heights, Newark, New Jersey, United States, 07102
Alan E. Delahoy of NJIT
The blue LED - its history and technology
Biography:
Email:
Address:Newark, New Jersey, United States
Alan E. Delahoy of NJIT
The blue LED - its history and technology
Biography:
Email:
Address:Newark, New Jersey, United States
Alan E. Delahoy of NJIT
The blue LED - its history and technology
Biography:
Email:
Address:Newark, New Jersey, United States
Agenda
5:00 PM Seminar
in ECE 202
All Welcome: You don't have to be an IEEE Member to attend.