Room temperature photoluminescence from In<inf>x</inf>Al<inf>(1-x)</inf>N films deposited by plasma-assisted molecular beam epitaxy
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© 2014 AIP Publishing LLC.InAlN films deposited by plasma-assisted molecular beam epitaxy exhibited a lateral composition modulation characterized by 10-12 nm diameter, honeycomb-shaped, columnar domains with Al-rich cores and In-rich boundaries. To ascertain the effect of this microstructure on its optical properties, room temperature absorption and photoluminescence characteristics of InxAl(1-x)N were comparatively investigated for indium compositions ranging from x = 0.092 to 0.235, including x = 0.166 lattice matched to GaN. The Stokes shift of the emission was significantly greater than reported for films grown by metalorganic chemical vapor deposition, possibly due to the phase separation in these nanocolumnar domains. The room temperature photoluminescence also provided evidence of carrier transfer from the InAlN film to the GaN template.
Published Version (Please cite this version)10.1063/1.4896849
Publication InfoBrown, April S; Everitt, Henry; Fournelle, J; Jiao, W; Kim, T; Kong, W; ... Roberts, AT (2014). Room temperature photoluminescence from In<inf>x</inf>Al<inf>(1-x)</inf>N films deposited by plasma-assisted molecular beam epitaxy. Applied Physics Letters, 105(13). 10.1063/1.4896849. Retrieved from http://hdl.handle.net/10161/13872.
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Professor of Electrical and Computer Engineering
Dr. April Brown recieved her B.S.E.E. from North Carolina State University in 1981, her M.S.E.E. and Ph.D. from Cornell University in 1984 and 1985, respectively. She worked at the Hughes Research Laboratories (now HRL LLC) in Malibu, Ca. from 1986-1993, and spent one year at the Army Research Office in the Physics Division (1988). She joined the Georgia Insitutute of Technology in 1994 as an Associate Professor and was promoted to Professor in 1999. She was Associate Dean in the College of Engi
Adjunct Professor of Physics
Dr. Everitt is one of the Army's chief scientists. He works at the Army's Aviation and Missile RD&E Center at Redstone Arsenal, AL. Through his adjunct appointment in the Duke Physics Department, he leads an active experimental research group in condensed matter physics, nanophotonics, molecular physics, and novel terahertz imaging with colleagues on campus and through an international network of collaborators. Four principal research areas are being pursued: 1) Ultrafast Spectroscopy.
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