18 citations · 20 across the 7 of their papers we have counts for
7 papers
Barrier-channel intermixing and 2-dimensional electron gas degradation in Al-rich Al(Ga)N/AlGaN high electron mobility transistor heterostructures
Pietro Pampili, Vitaly Z. Zubialevich, Badal Mondal +4
In this work, we report on recent results in understanding and addressing the issue of interface smearing in high-aluminium content AlGaN/AlGaN heterostructures. On the one hand, t…
High Uniformity GaN Micro-pyramids and Platelets by Selective Area Growth
Changhao Li, Vitaly Z. Zubialevich, Peter J. Parbrook +2
The development of uniform GaN micro-pyramids and platelets via selective area growth is a critical step toward advancing III-nitride device technologies, particularly for micro-li…
Temperature-dependent investigation of polarisation doping in 330 nm ultraviolet light-emitting diodes
Peter Milner, Vitaly Z. Zubialevich, Sandeep M. Singh +3
Polarisation doping of AlGaN, through grading of , has realised major improvements in -type conductivity in ultraviolet (UV) light-emitting diodes (LEDs) compared…
Geometrically-Controlled Microscale Patterning and Epitaxial Lateral Overgrowth of Nitrogen-Polar GaN
Pietro Pampili, Vitaly Z. Zubialevich, Peter J. Parbrook
In this study we report on a novel two-step epitaxial growth technique that enables a significant improvement of the crystal quality of nitrogen-polar GaN. The starting material is…
Electrostatically-induced strain of graphene on GaN nanorods
Jakub Kierdaszuk, Rafał Bożek, Tomasz Stefaniuk +11
Few-layer graphene deposited on semiconductor nanorods separated by undoped spacers has been studied in perspective for the fabrication of stable nanoresonators. We show that an ap…
Pseudomagnetic fields and strain engineering: graphene on GaN nanowires
Jakub Kierdaszuk, Paweł Dąbrowski, Maciej Rogala +11
Gallium nitride nanowire and nanorod substrates with different morphology are prospective platforms allowing to control the local strain distribution in graphene films top of them,…
Ag colloids and arrays for plasmonic non-radiative energy transfer from quantum dots to a quantum well
Graham P. Murphy, John J. Gough, Luke J. Higgins +6
Ag nanoparticles in the form of colloids and ordered arrays are used to demonstrate plasmon-mediated non-radiative energy transfer from quantum dots to quantum wells with varying t…