Ultraviolet light emitting diodes by ammonia molecular beam epitaxy on metamorphic (<mml:math altimg="si0001.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/
Type
ArticleAuthors
Young, Erin C.Yonkee, Benjamin P.
Wu, Feng
Saifaddin, Burhan K.
Cohen, Daniel A.
DenBaars, Steve P.
Nakamura, Shuji
Speck, James S.
Date
2015-09
Metadata
Show full item recordAbstract
© 2015. In this paper we demonstrate ultraviolet (UV) light emitting diodes (LEDs) grown on metamorphic AlGaN buffers on freestanding GaN (202-1) substrates by ammonia assisted molecular beam epitaxy (MBE). Misfit and related threading dislocations were confined to the stress relaxed, compositionally graded buffer layers, and single quantum well devices emitting at 355, 310 and 274. nm were grown on top of the graded buffers. The devices showed excellent structural and electrical (I-. V) characteristics.Citation
Young EC, Yonkee BP, Wu F, Saifaddin BK, Cohen DA, et al. (2015) Ultraviolet light emitting diodes by ammonia molecular beam epitaxy on metamorphic (<mml:math altimg=“si0001.gif” overflow=“scroll” xmlns:xocs=“http://www.elsevier.com/xml/xocs/dtd” xmlns:xs=“http://www.w3.org/2001/XMLSchema” xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance” xmlns=“http://www.elsevier.com/xml/ja/dtd” xmlns:ja=“http://www.elsevier.com/xml/ja/dtd” xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:tb=“http://www.elsevier.com/xml/common/table/dtd” xmlns:sb=“http://www.elsevier.com/xml/common/struct-bib/dtd” xmlns:ce=“http://www.elsevier.com/xml/common/dtd” xmlns:xlink=“http://www.w3.org/1999/xlink” xmlns:cals=“http://www.elsevier.com/xml/common/cals/dtd” xmlns:sa=“http://www.elsevier.com/xml/common/struct-aff/dtd”><mml:mn>20</mml:mn><mml:mover accent=“true”><mml:mn>2</mml:mn><mml:mo>¯</mml:mo></mml:mover><mml:mn>1</mml:mn></mml:math>) AlGaN/GaN buffer layers. Journal of Crystal Growth 425: 389–392. Available: http://dx.doi.org/10.1016/j.jcrysgro.2015.02.081.Sponsors
This work was supported by the KAUST-KACST-UCSB Solid State Lighting Program and the DARPA CMUVT program (PM: Dan Green).Publisher
Elsevier BVJournal
Journal of Crystal GrowthISSN
0022-0248Handle URI
http://hdl.handle.net/10754/600122ae974a485f413a2113503eed53cd6c53
10.1016/j.jcrysgro.2015.02.081