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Silicon-Waveguide-Integrated Carbon Nanotube Optoelectronic System on a Single Chip
Ze Ma1, Leijing Yang2, Lijun Liu1
1Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics and Research Center for Carbon-based Electronics, Peking University, Beijing 100871, China.
ACS Nano
|May 19, 2020
Summary
Carbon nanotubes enable monolithic optoelectronic integration with silicon photonics. This breakthrough enhances absorption efficiency and demonstrates compatible logic gates for future on-chip optical systems.
Area of Science:
- Nanophotonics and nanoelectronics
- Optoelectronics
Background:
- Monolithic optoelectronic integration is crucial for advanced communication systems.
- Material incompatibility hinders silicon electronics integration with photonics.
Purpose of the Study:
- To demonstrate optoelectronic integration using carbon nanotubes (CNTs) with silicon photonics.
- To explore the potential of CNTs for on-chip optical interconnection systems.
Main Methods:
- Integration of silicon waveguides with a carbon nanotube (CNT) optoelectronic system.
- Fabrication of waveguide-integrated photodetectors and CNT-based logic gates.
Main Results:
- CNT photodetectors achieved 12.5 mA/W photoresponsivity at 1530 nm.
- Demonstrated a 97.6-fold increase in absorption efficiency with integrated waveguides.
- Successfully controlled CNT logic gates using cascaded photodetector signals.
Conclusions:
- Carbon nanotubes are compatible with silicon photonics for integrated optoelectronic systems.
- CNT-based optoelectronics show significant potential for future on-chip nanophotonic and nanoelectronic applications.
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