TY - GEN
T1 - Thermal stability performance of metamorphic high electron mobility transistors (MHEMTs)
AU - Chen, L. Y.
AU - Chu, K. Y.
AU - Chen, T. P.
AU - Hung, C. W.
AU - Tsai, T. H.
AU - Chen, L. A.
AU - Cheng, S. Y.
AU - Liu, W. C.
PY - 2007
Y1 - 2007
N2 - The thermal stability performance of double δ-doped In 0.42Al0.58As/In0.46Ga0.54As metamorphic high electron mobility transistors with Au and Ti/Au metal gates are comprehensively studied and demonstrated. By evaporating the Ti/Au metal gate, the thermal stability of device characteristics are significantly improved as compared with the device with conventional metal gate (Au). Experimentally, the device with a Ti/Au metal gate simultaneously exhibits the considerably lower temperature degradation in turn-on voltage (-2.19 mV/K), breakdown voltage (-34 mV/K), impact ionization-induced gate current (1.63×10-3 μA/mm·K), output conductance (1.23 μS/mm K), and voltage gain (-0.33 /K) as the temperature is increased from 300 to 510 K. Consequently, the studied device with a Ti/Au metal gate is a good candidate for high-speed and high-temperature applications.
AB - The thermal stability performance of double δ-doped In 0.42Al0.58As/In0.46Ga0.54As metamorphic high electron mobility transistors with Au and Ti/Au metal gates are comprehensively studied and demonstrated. By evaporating the Ti/Au metal gate, the thermal stability of device characteristics are significantly improved as compared with the device with conventional metal gate (Au). Experimentally, the device with a Ti/Au metal gate simultaneously exhibits the considerably lower temperature degradation in turn-on voltage (-2.19 mV/K), breakdown voltage (-34 mV/K), impact ionization-induced gate current (1.63×10-3 μA/mm·K), output conductance (1.23 μS/mm K), and voltage gain (-0.33 /K) as the temperature is increased from 300 to 510 K. Consequently, the studied device with a Ti/Au metal gate is a good candidate for high-speed and high-temperature applications.
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UR - http://www.scopus.com/inward/citedby.url?scp=43049157719&partnerID=8YFLogxK
U2 - 10.1109/EDSSC.2007.4450227
DO - 10.1109/EDSSC.2007.4450227
M3 - Conference contribution
AN - SCOPUS:43049157719
SN - 1424406374
SN - 9781424406371
T3 - IEEE Conference on Electron Devices and Solid-State Circuits 2007, EDSSC 2007
SP - 721
EP - 724
BT - IEEE Conference on Electron Devices and Solid-State Circuits 2007, EDSSC 2007
T2 - IEEE Conference on Electron Devices and Solid-State Circuits 2007, EDSSC 2007
Y2 - 20 December 2007 through 22 December 2007
ER -