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Title: Graphene–Metamaterial Photodetectors for Integrated Infrared Sensing

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.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [1]
  1. Univ. of Exeter (United Kingdom)
  2. ETH Zurich (Switzerland); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. ETH Zurich (Switzerland)
Publication Date:
OSTI Identifier:
1257798
Report Number(s):
SAND2016-5489J
Journal ID: ISSN 2330-4022; 641593
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
ACS Photonics
Additional Journal Information:
Journal Volume: 3; Journal Issue: 6; Journal ID: ISSN 2330-4022
Research Org:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY