Details
Original language | English |
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Title of host publication | 1998 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 1998 |
Editors | Sammy Kayali |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 19-23 |
Number of pages | 5 |
ISBN (electronic) | 0780352882, 9780780352889 |
Publication status | Published - 6 Aug 2022 |
Externally published | Yes |
Event | 1st Topical Meeting on Silicon Mono1ithic Integrated Circuits in RF Systems, SiRF 1998 - Ann Arbor, United States Duration: 18 Sept 1998 → 18 Sept 1998 |
Publication series
Name | 1998 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 1998 |
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Volume | 1998-September |
Abstract
We demonstrate cutoff and maximum oscillation frequencies of more than 70 GHz, and delays per stage down to 15 ps for ring oscillators with integrated SiGe:C heterobipolar transistors (HBT). We also demonstrate almost ideal base current characteristics for these, even with carbon in the depleted regions. The incorporation of low carbon concentration (<1020 cm-3) within the SiGe region of SiGe HBTs can significantly suppress boron outdiffusion caused by a variety of subsequent processing steps. For example, transient enhanced boron diffusion due to BF2 implantation of the external base regions can be eliminated. Thus, the use of epitaxial SiGe:C instead of SiGe layers provides greater flexibility in process design, and wider latitude in process margin.
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Instrumentation
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1998 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 1998. ed. / Sammy Kayali. Institute of Electrical and Electronics Engineers Inc., 2022. p. 19-23 750170 (1998 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 1998; Vol. 1998-September).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Carbon doping of SiGe heterobipolar transistors
AU - Osten, H. J.
AU - Knoll, D.
AU - Heinemann, B.
AU - Tillack, B.
PY - 2022/8/6
Y1 - 2022/8/6
N2 - We demonstrate cutoff and maximum oscillation frequencies of more than 70 GHz, and delays per stage down to 15 ps for ring oscillators with integrated SiGe:C heterobipolar transistors (HBT). We also demonstrate almost ideal base current characteristics for these, even with carbon in the depleted regions. The incorporation of low carbon concentration (<1020 cm-3) within the SiGe region of SiGe HBTs can significantly suppress boron outdiffusion caused by a variety of subsequent processing steps. For example, transient enhanced boron diffusion due to BF2 implantation of the external base regions can be eliminated. Thus, the use of epitaxial SiGe:C instead of SiGe layers provides greater flexibility in process design, and wider latitude in process margin.
AB - We demonstrate cutoff and maximum oscillation frequencies of more than 70 GHz, and delays per stage down to 15 ps for ring oscillators with integrated SiGe:C heterobipolar transistors (HBT). We also demonstrate almost ideal base current characteristics for these, even with carbon in the depleted regions. The incorporation of low carbon concentration (<1020 cm-3) within the SiGe region of SiGe HBTs can significantly suppress boron outdiffusion caused by a variety of subsequent processing steps. For example, transient enhanced boron diffusion due to BF2 implantation of the external base regions can be eliminated. Thus, the use of epitaxial SiGe:C instead of SiGe layers provides greater flexibility in process design, and wider latitude in process margin.
UR - http://www.scopus.com/inward/record.url?scp=84988915376&partnerID=8YFLogxK
U2 - 10.1109/SMIC.1998.750170
DO - 10.1109/SMIC.1998.750170
M3 - Conference contribution
AN - SCOPUS:84988915376
T3 - 1998 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 1998
SP - 19
EP - 23
BT - 1998 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, SiRF 1998
A2 - Kayali, Sammy
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1st Topical Meeting on Silicon Mono1ithic Integrated Circuits in RF Systems, SiRF 1998
Y2 - 18 September 1998 through 18 September 1998
ER -