title: Controlled Coalescence of AlGaN Nanowire Arrays: An Architecture for Nearly Dislocation-Free Planar Ultraviolet Photonic Device Applications.
abstract: Nearly dislocation-free semipolar AlGaN templates are achieved on c-plane sapphire substrate through controlled nanowire coalescence by selective-area epitaxy. The coalesced Mg-doped AlGaN layers exhibit superior charge-carrier-transport properties. Semipolar-AlGaN ultraviolet light-emitting diodes demonstrate excellent performance. This work establishes the use of engineered nanowire structures as a viable architecture to achieve large-area, dislocation-free planar photonic and electronic devices.
authors.affiliation: Department of Electrical and Computer Engineering, McGill University, Montreal, QC, H3A 0E9, Canada.
authors.forename: Binh H
authors.initials: BH
authors.lastname: Le
authors.affiliation: Department of Electrical and Computer Engineering, McGill University, Montreal, QC, H3A 0E9, Canada.
authors.forename: Songrui
authors.initials: S
authors.lastname: Zhao
authors.affiliation: Department of Electrical and Computer Engineering, McGill University, Montreal, QC, H3A 0E9, Canada.
authors.forename: Xianhe
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Materials Science and Engineering, Canadian Centre for Electron Microscopy, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4M1, Canada.
authors.forename: Steffi Y
authors.initials: SY
authors.lastname: Woo
authors.affiliation: Department of Materials Science and Engineering, Canadian Centre for Electron Microscopy, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4M1, Canada.
authors.forename: Gianluigi A
authors.initials: GA
authors.lastname: Botton
authors.affiliation: Department of Electrical and Computer Engineering, McGill University, Montreal, QC, H3A 0E9, Canada. zetian.mi@mcgill.ca.
authors.forename: Zetian
authors.initials: Z
authors.lastname: Mi
keywords: AlGaN; GaN; coalescence; light-emitting diodes; nanowires; selective area growth; ultraviolet