R
Richard A. Stall
Researcher at Rutgers University
Publications - 52
Citations - 1739
Richard A. Stall is an academic researcher from Rutgers University. The author has contributed to research in topics: Gallium nitride & Ion implantation. The author has an hindex of 21, co-authored 52 publications receiving 1717 citations.
Papers
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Journal ArticleDOI
Ca and O ion implantation doping of GaN
TL;DR: In this paper, an acceptor species in GaN, other than Mg, with an ionization energy level less than 180 meV was reported, but with an activation efficiency of only 3.6% after a 1050 °C anneal.
Journal ArticleDOI
Thermal stability of W ohmic contacts to n‐type GaN
Melanie W. Cole,D. W. Eckart,W. Y. Han,R. L. Pfeffer,T. Monahan,Fan Ren,C. Yuan,Richard A. Stall,Stephen J. Pearton,Y. Li,Yicheng Lu +10 more
TL;DR: In this article, W was found to produce low specific contact resistance (ρc∼8.0×10−5 Ω cm2) ohmic contacts to n+−GaN (n=1.5×1019 cm−3) with limited reaction between the metal and semiconductor up to 1000°C.
Journal ArticleDOI
Ion‐implanted GaN junction field effect transistor
John C. Zolper,Randy J. Shul,Albert G. Baca,Robert G. Wilson,Stephen J. Pearton,Richard A. Stall +5 more
TL;DR: In this paper, selective area ion implantation doping has been used to fabricate GaN junction field effect transistors (JFETs), achieving a gate turn-on voltage of 1.84 V at 1 mA/mm of gate current.
Patent
Apparatus for depositing a coating on a substrate
TL;DR: In this paper, an apparatus for depositing a coating on a substrate substantially eliminates the occurrence of oval defects by creating a heated tortuous path through which the source material vapors must travel before depositing on the substrate.
Journal ArticleDOI
Damage to epitaxial GaN layers by silicon implantation
Hark Hoe Tan,James Williams,Jin Zou,David J. H. Cockayne,Stephen J. Pearton,Richard A. Stall +5 more
TL;DR: In this article, ion channeling and cross-sectional transmission electron microscopy were used to study the extent and nature of Si ion implantation damage in epitaxial GaN layers at liquid nitrogen temperature.