The effect of Rapid Thermal Annealing (RTA) treatment on the base and collector currents of Si/Si1-xGex HBTs is investigated. Whilst the base current is improved by high temperature annealing, probably through annealing out of point defects (reducingE/B depletion region recombination), the collector current is degraded by the out-diffusion of boron from the base, creating parasitic barriers to injection. For some devices, the E/B depletion region recombination is reduced to such an extent that the base current is dominated by neutral base recombination.
Published in:
Solid State Device Research Conference, 1991. ESSDERC '91. 21st European
Date of Conference:
16-19 Sept. 1991
- Page(s):
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135
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138
- Print ISBN:
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0444890661
- Conference Location :
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Montreux, Switzerland
- Product Type:
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Conference Publications