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Analysis on the low-k benzo-cyclo-butene passivation of pseudomorphic high electron mobility transistors

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8 Author(s)
Wook-Suk Sul ; Millimeter-wave Innovation Technol. Res. Center, Dongguk Univ., Seoul, South Korea ; Hyo-Jong Han ; Byoung-Ok Lim ; Bok-Hyoung Lee
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In pseudomorphic high electron mobility transistors (PHEMT's), surface passivation for the devices is very important for ensuring the DC and RF performances as well as the reliability. We performed the comparative study on the DC, RF and noise characteristics of the 0.1 μm gate length PHEMT's passivated by either the conventional Si3N4 or the low dielectric constant benzo-cyclo-butene (BCB)layers. The noise performance of the BCB passivation for the PHEMT's was much superior to that of the Si3N4, whereas the DC and other RF properties were not significantly affected by the passivation materials.

Published in:

Optoelectronic and Microelectronic Materials and Devices, 2002 Conference on

Date of Conference:

11-13 Dec. 2002