Graphene–Metamaterial Photodetectors for Integrated Infrared Sensing
- Univ. of Exeter (United Kingdom)
- ETH Zurich (Switzerland); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- ETH Zurich (Switzerland)
We study metamaterial-enhanced graphene photodetectors operating in the mid-IR to THz. The detector element consists of a graphene ribbon embedded within a dual-metal split ring resonator, which acts like a cavity to enhance the absorption of electromagnetic radiation by the graphene ribbon, while the asymmetric metal contacts enable photothermoelectric detection. The detectors we designed for the mid-IR demonstrate peak responsivity (referenced to total power) of ~120 mV/W at 1500 cm-1 and are employed in the spectroscopic evaluation of vibrational resonances, thus demonstrating a key step toward a platform for integrated surface-enhanced sensing.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1257798
- Report Number(s):
- SAND2016-5489J; 641593
- Journal Information:
- ACS Photonics, Vol. 3, Issue 6; ISSN 2330-4022
- Country of Publication:
- United States
- Language:
- English
Cited by: 54 works
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