Some effects of oxygen impurities on AlN and GaN

GA Slack, LJ Schowalter, D Morelli… - Journal of Crystal Growth, 2002 - Elsevier
Oxygen is a common substitutional impurity in both AlN and GaN crystals. In the wurtzite 2H
phase it can be present in AlN up to concentrations of 1× 1021/cm3 while in GaN it can …

Alternating individual and group idea generation: Finding the elusive synergy

R Korde, PB Paulus - Journal of Experimental Social Psychology, 2017 - Elsevier
Three experiments were designed to test the efficacy of ideation procedures that involved
alternation of individual and group idea generation sessions (hybrid brainstorming) as …

Gallium nitride crystals and wafers and method of making

MP D'evelyn, DS Park, SF Leboeuf… - US Patent …, 2006 - Google Patents
(57) ABSTRACT A GaN crystal having up to about 5 mole percent of at least one of
aluminum, indium, and combinations thereof. The GaN crystal has at least one grain having …

[HTML][HTML] Defect identification based on first-principles calculations for deep level transient spectroscopy

D Wickramaratne, CE Dreyer, B Monserrat… - Applied Physics …, 2018 - pubs.aip.org
Deep level transient spectroscopy (DLTS) is used extensively to study defects in
semiconductors. We demonstrate that great care should be exercised in interpreting …

Two yellow luminescence bands in undoped GaN

MA Reshchikov, JD McNamara, H Helava, A Usikov… - Scientific reports, 2018 - nature.com
Two yellow luminescence bands related to different defects have been revealed in undoped
GaN grown by hydride vapor phase epitaxy (HVPE). One of them, labeled YL1, has the zero …

Properties of the state of the art of bulk III–V nitride substrates and homoepitaxial layers

JA Freitas - Journal of Physics D: Applied Physics, 2010 - iopscience.iop.org
The technological importance of III–V nitride semiconductors relies on their variety of
applications, which cover optical, optoelectronic and electronic devices capable of operating …

Gallium nitride crystal and method of making same

MP D'evelyn, DS Park, S LeBoeuf, L Rowland… - US Patent …, 2006 - Google Patents
There is provided a GaN single crystal at least about 2 millimeters in diameter, with a
dislocation density less than about 10 4 cm− 1, and having no tilt boundaries. A method of …

Gallium nitride crystals and wafers and method of making

MP D'evelyn, D Park, SF Leboeuf, LB Rowland… - US Patent …, 2010 - Google Patents
EP O 937 790 8, 1999 EP O966047 12/1999 EP 1 172 464 1, 2002 EP 1249 522 10, 2002
FR 2796 657 1, 2001 JP 11 171699 9, 1999 JP 200022212 A 1, 2000 WO WO96, 41906 …

Donor-related recombination processes in hydride-vapor-phase epitaxial GaN

JA Freitas Jr, WJ Moore, BV Shanabrook, GCB Braga… - Physical Review B, 2002 - APS
High-resolution, variable-temperature photoluminescence studies of recombination
processes associated with excitons bound to donors in hydride-vapor-phase epitaxial GaN …

Shortcomings of using the scan functional for point defects and polarons in semiconductors

D Wickramaratne, JL Lyons - arxiv preprint arxiv:2311.03634, 2023 - arxiv.org
We find the recently developed strongly constrained and appropriately normalized (SCAN)
functional, now widely used in calculations of many materials, is not able to reliably describe …