Y. Yamashita et al., High f(T) 50-nm-gate InAlAs/InGaAs high electron mobility transistors lattice-matched to InP substrates, JPN J A P 2, 39(8B), 2000, pp. L838-L840
We fabricated 50-nm-gate InAlAs/InGaAs high electron mobility transistors (
HEMTs) lattice-matched to InP substrates using a conventional process under
low temperatures below 300 degrees C, and measured DC and RF performance.
nle measured cutoff frequency f(T) of our 50-nm-gate HEMT is 362 GHz, which
is the highest value ever reported for any transistor, and is much higher
than the values reported for previous 50-nm-gate lattice-matched HEMTs. The
excellent RF performance of our HEMTs might result from the low-temperatur
e fabrication process.