Graphene terahertz electronics
The two-dimensional material graphene, consisting of a single layer of carbon, possesses unique properties of interest for a wide range of applications. In particular, the unique electronic features of graphene, combined with its flexible nature, make it a promising material to integrate into plastic and fabric, something that will be essential building blocks in a future interconnected world. We have demonstrated a flexible terahertz direct detector that detects signals from 330 GHz to 500 GHz and an integrated 200-GHz graphene FET mixer. Hopefully, this can extend terahertz technology to applications that will require flexible electronics, such as wireless sensor networks and wearable technology. Moreover, we study charge carrier transport properties in graphene field-effect transistors (GFETs) and fabrication processes to improve graphene technology for high-frequency applications. Part of the work is within the European Graphene Flagship.
- M. Asad, S. Majdi, A. Vorobiev, K. Jeppson, J. Isberg and J. Stake, "Graphene FET on Diamond for High-Frequency Electronics," in IEEE Electron Device Letters, 2022. doi: 10.1109/LED.2021.3139139.
- K. Jeppson, M. Asad and J. Stake, "Mobility Degradation and Series Resistance in Graphene Field-Effect Transistors," in IEEE Transactions on Electron Devices, 2021. doi: 10.1109/TED.2021.3074479.
- M. Bonmann et al., "Graphene field-effect transistors with high extrinsic fT and fmax," in IEEE Electron Device Letters. doi: 10.1109/LED.2018.2884054
- X. Yang, A. Vorobiev, A. Generalov, M. A. Andersson, and J. Stake, "A flexible graphene terahertz detector," Appl. Phys. Lett., vol. 111, no. 2, p. 021102, Jul. 2017
- M. A. Andersson, Y. Zhang, and J. Stake, “A 185–215-GHz Subharmonic Resistive Graphene FET Integrated Mixer on Silicon,” IEEE Trans. Microw. Theory. Tech., vol. 65, no. 1, pp. 165–172, 2017. doi: 10.1109/TMTT.2016.2615928.
- A. Zak, M. Andersson, M. Bauer, J. Matukas, A. Lisauskas, H. Roskos, and J. Stake, "Antenna-integrated 0.6 THz FET direct detectors based on CVD graphene," Nano Letters, 2014. doi: 10.1021/nl5027309.