Yf. Wu et al., VERY HIGH BREAKDOWN VOLTAGE AND LARGE TRANSCONDUCTANCE REALIZED ON GAN HETEROJUNCTION FIELD-EFFECT TRANSISTORS, Applied physics letters, 69(10), 1996, pp. 1438-1440
We report record high breakdown voltages up to 340 and 230 V realized
on unintentionally doped (1.5 mu m gate length) and Si doped (1 mu m g
ate length) AlGaN/GaN modulation doped field effect transistors (MODFE
Ts), respectively. The devices also have large transconductances up to
140 mS/mm and a full channel current of 150-400 mA/mm. The Si doped M
ODFET sample demonstrated a very high room temperature mobility of 150
0 cm(2)/Vs. With these specifications, GaN held effect transistors as
microwave power devices are practical. (C) 1996 American Institute of
Physics.