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Title: Enhanced absorption in two-dimensional materials via Fano-resonant photonic crystals

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4919760· OSTI ID:22398987
 [1]; ;  [2];  [3]; ;  [4]; ;  [5]
  1. Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee 37212 (United States)
  2. Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37240 (United States)
  3. Interdisciplinary Materials Science Program, Vanderbilt University, Nashville, Tennessee 37212 (United States)
  4. Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37212 (United States)
  5. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

The use of two-dimensional (2D) materials in optoelectronics has attracted much attention due to their fascinating optical and electrical properties. However, the low optical absorption of 2D materials arising from their atomic thickness limits the maximum attainable external quantum efficiency. For example, in the visible and near-infrared regimes monolayer MoS{sub 2} and graphene absorb only ∼10% and 2.3% of incoming light, respectively. Here, we experimentally demonstrate the use of Fano-resonant photonic crystals to significantly boost absorption in atomically thin materials. Using graphene as a test bed, we demonstrate that absorption in the monolayer thick material can be enhanced to 77% within the telecommunications band, the highest value reported to date. We also show that the absorption in the Fano-resonant structure is non-local, with light propagating up to 16 μm within the structure. This property is particularly beneficial in harvesting light from large areas in field-effect-transistor based graphene photodetectors in which separation of photo-generated carriers only occurs ∼0.2 μm adjacent to the graphene/electrode interface.

OSTI ID:
22398987
Journal Information:
Applied Physics Letters, Vol. 106, Issue 18; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
Country of Publication:
United States
Language:
English

References (37)

Ultrahigh electron mobility in suspended graphene journal June 2008
Intrinsic Response Time of Graphene Photodetectors journal July 2011
Microcavity-Integrated Graphene Photodetector journal May 2012
Energy Dissipation in Graphene Field-Effect Transistors journal May 2009
Emerging Device Applications for Semiconducting Two-Dimensional Transition Metal Dichalcogenides journal January 2014
Total Absorption in a Graphene Monolayer in the Optical Regime by Critical Coupling with a Photonic Crystal Guided Resonance journal March 2014
A graphene-based broadband optical modulator journal May 2011
Strong plasmonic enhancement of photovoltage in graphene journal August 2011
Plasmon resonance enhanced multicolour photodetection by graphene journal September 2011
Light–matter interaction in a microcavity-controlled graphene transistor journal January 2012
Broadband high photoresponse from pure monolayer graphene photodetector journal May 2013
Ultrafast graphene photodetector journal October 2009
Ultrafast hot-carrier-dominated photocurrent in graphene journal January 2012
Ultrasensitive photodetectors based on monolayer MoS2 journal June 2013
Graphene photodetectors with ultra-broadband and high responsivity at room temperature journal March 2014
Graphene photodetectors for high-speed optical communications journal March 2010
Photoconductivity of biased graphene journal December 2012
CMOS-compatible graphene photodetector covering all optical communication bands journal September 2013
Chip-integrated ultrafast graphene photodetector with high responsivity journal September 2013
Saturated Optical Absorption Through band Filling in Semiconductors journal January 1969
Enhanced absorption of monolayer MoS 2 with resonant back reflector journal May 2014
Approaching total absorption at near infrared in a large area monolayer graphene by critical coupling journal November 2014
Analysis of guided resonances in photonic crystal slabs journal June 2002
Fine Structure Constant Defines Visual Transparency of Graphene journal June 2008
Hot Carrier-Assisted Intrinsic Photoresponse in Graphene journal October 2011
Strong plasmonic enhancement of photovoltage in graphene. text January 2011
Microcavity-integrated graphene photodetector text January 2012
Light–matter interaction in a microcavity-controlled graphene transistor text January 2012
Light-matter interaction in a microcavity-controlled graphene transistor. text January 2012
Ultrahigh electron mobility in suspended graphene text January 2008
The role of contacts in graphene transistors: A scanning photocurrent study text January 2009
Energy dissipation in graphene field-effect transistors text January 2009
Ultrafast graphene photodetector text January 2009
Strong Plasmonic Enhancement of Photovoltage in Graphene text January 2011
Hot Carrier-Assisted Intrinsic Photoresponse in Graphene text January 2011
Microcavity-integrated graphene photodetector text January 2011
Emerging Device Applications for Semiconducting Two-Dimensional Transition Metal Dichalcogenides text January 2014

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A Narrow Dual-Band Monolayer Unpatterned Graphene-Based Perfect Absorber with Critical Coupling in the Near Infrared journal January 2020
A proposal of a perfect graphene absorber with enhanced design and fabrication tolerance journal July 2017
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