30-W/mm GaN HEMTs by field plate optimization

YF Wu, A Saxler, M Moore, RP Smith… - IEEE Electron …, 2004 - ieeexplore.ieee.org
GaN high-electron-mobility-transistors (HEMTs) on SiC were fabricated with field plates of
various dimensions for optimum performance. Great enhancement in radio frequency (RF) …

Ferroelectric negative capacitance MOSFET: Capacitance tuning & antiferroelectric operation

AI Khan, CW Yeung, C Hu… - 2011 International …, 2011 - ieeexplore.ieee.org
A design methodology of ferroelectric (FE) negative capacitance FETs (NCFETs) based on
the concept of capacitance matching is presented. A new mode of NCFET operation, called …

Role of threading dislocation structure on the x‐ray diffraction peak widths in epitaxial GaN films

B Heying, XH Wu, S Keller, Y Li, D Kapolnek… - Applied physics …, 1996 - pubs.aip.org
In this letter we demonstrate that the anomalously low (002) x‐ray rocking curve widths for
epitaxial hexagonal GaN films on (001) sapphire are a result of a specific threading …

Type‐II quantum‐well lasers for the mid‐wavelength infrared

JR Meyer, CA Hoffman, FJ Bartoli… - Applied physics …, 1995 - pubs.aip.org
We discuss an improved mid-wave infrared diode laser structure based on InAs-Ga1xInxSb-
InAs-Ga1xAlxSb Type-II multiple quantum wells. The proposed design combines strong …

High power mid‐infrared (λ∼ 5 μm) quantum cascade lasers operating above room temperature

J Faist, F Capasso, C Sirtori, DL Sivco… - Applied Physics …, 1996 - pubs.aip.org
The high power operation of mid-infrared quantum cascade lasers at temperatures up to T
320 K is reported. Gain at high temperature is optimized by a design combining low doping …

Microhollow cathode discharges

KH Schoenbach, R Verhappen, T Tessnow… - Applied Physics …, 1996 - pubs.aip.org
The current–voltage characteristics of hollow cathode discharges and their predischarges in
argon under dc and pulsed conditions were found to have a positive slope at pressures up …

Microstructure of Ti/Al and Ti/Al/Ni/Au Ohmic contacts for n‐GaN

S Ruvimov, Z Liliental‐Weber, J Washburn… - Applied Physics …, 1996 - pubs.aip.org
Transmission electron microscopy has been applied to characterize the structure of Ti/Al and
Ti/Al/Ni/Au Ohmic contacts on n-type GaN (1017 cm 3) epitaxial layers. The metals were …

Very high breakdown voltage and large transconductance realized on GaN heterojunction field effect transistors

YF Wu, BP Keller, S Keller, D Kapolnek… - Applied physics …, 1996 - pubs.aip.org
We report record high breakdown voltages up to 340 and 230 V realized on unintentionally
doped (1.5 μm gate length) and Si doped (1 μm gate length) AlGaN/GaN modulation doped …

High barrier height gan schottky diodes: Pt/gan and pd/gan

L Wang, MI Nathan, TH Lim, MA Khan… - Applied Physics …, 1996 - pubs.aip.org
Platinum (Pt) and palladium (Pd) Schottky diodes on n‐type GaN grown by metalorganic
chemical vapor deposition were achieved and investigated. Aluminum was used for ohmic …

Enhancement and depletion mode GaN/AlGaN heterostructure field effect transistors

MA Khan, Q Chen, CJ Sun, JW Yang… - Applied physics …, 1996 - pubs.aip.org
We report on the fabrication and characterization of Al0. 1Ga0. 9N/GaN heterojunction field
effect transistors, both an enhancement mode and a depletion mode with a low pinchoff …