A novel selective SiGe epitaxial growth technology for self-aligned HBTs
- 2 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
A selective epitaxial growth (SEG) technology using Si/sub 2/H/sub 6/+GeH/sub 4/+Cl/sub 2/ under cold-wall ultra-high-vacuum (UHV)/CVD conditions is described. By using this technology, a self-aligned SiGe HBT with selective epitaxial base is realized. This technology also makes possible the void-free selective growth of SiGe/Si epitaxial layers on Si under polysilicon with overhanging structure, as well as on the open region. As for the transistor characteristics, h/sub FE/ of 100 and BV/sub CEO/ of 5.0 V were obtained.<>Keywords
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