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Proton irradiation effects on Sb-based heterojunction bipolar transistors

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14 Author(s)
Lo, C.F. ; Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611 ; Kim, H.-Y. ; Kim, J. ; Chen, Shu-Han
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In0.52Al0.48As/In0.39Ga0.61As0.77Sb0.23/In0.53Ga0.47As double heterojunction bipolar transistors (DHBTs) were irradiated with 5 MeV protons at fluences from 2×1011 to 2×1015 protons/cm2. The radiation produced significant increases in generation-recombination leakage current in both emitter-base and base-collector junctions. The DHBTs irradiated with a dose of 2×1011 cm-2, which was equivalent to around 40 years of exposure in low Earth orbit, showed minimal changes in the junction ideality factor, generation-recombination leakage current, current gain, and output conductance. The InAlAs/InGaAsSb/InGaAs DHBTs appear to be well suited to space or nuclear industry applications.

Published in:

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures  (Volume:27 ,  Issue: 6 )

Date of Publication:

Nov 2009

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