AI Article Synopsis
- Researchers created a planar graphene-based photodetector (PD) designed for all-graphene photonic-integrated circuits (PICs).
- The PD is capable of detecting horizontally incident light and exhibits a maximum photocurrent profile at the interfaces of graphene and electrodes due to a Schottky-like barrier effect.
- With a time response of under 39.7 ms, this graphene PD shows potential for further applications in all-graphene PIC technology.
Article Abstract
We developed a planar-type graphene-based plasmonic photodetector (PD) for the development of all-graphene photonic-integrated-circuits (PICs). By configuring the graphene plasmonic waveguide and PD structure all-in-one, the proposed graphene PD detects horizontally incident light. The photocurrent profile with opposite polarity is the maximum at graphene-electrode interfaces due to a Schottky-like barrier effect at the interface. The photocurrent amplitude increases with an increase of the graphene-metal interface length. Obtaining time constants of less than 39.7 ms for the time response, we concluded that the proposed graphene PD could be exploited further for application in all graphene-based PICs.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.22.000803 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Enhancing light-matter interaction is crucial for boosting the performance of nanophotonic devices, which can be achieved via plasmon-induced transparency (PIT). This study introduces what we believe to be a novel E-type metamaterial structure crafted from a single graphene layer. The structure, comprising a longitudinal graphene ribbon and three horizontal graphene strips, leverages destructive interference at terahertz frequencies to manifest triple plasmon-induced transparency (triple-PIT).
View Article and Find Full Text PDFSpectrally Tunable Ultrafast Long Wave Infrared Detection at Room Temperature.
Nano Lett
November 2024
Department of Physics, University of Central Florida, Orlando, Florida 32816, United States.
Room-temperature longwave infrared (LWIR) detectors are preferred over cryogenically cooled solutions due to the cost effectiveness and ease of operation. The performance of present uncooled LWIR detectors such as microbolometers, is limited by reduced sensitivity, slow response time, and the lack of dynamic spectral tunability. Here, we present a graphene-based efficient room-temperature LWIR detector with high detectivity and fast response time utilizing its tunable optical and electronic characteristics.
View Article and Find Full Text PDFThe Tunable Parameters of Graphene-Based Biosensors.
Sensors (Basel)
August 2024
INFN-Laboratori Nazionali di Frascati, Via E. Fermi 54, 00044 Frascati, Italy.
Graphene-based surface plasmon resonance (SPR) biosensors have emerged as a promising technology for the highly sensitive and accurate detection of biomolecules. This study presents a comprehensive theoretical analysis of graphene-based SPR biosensors, focusing on configurations with single and bimetallic metallic layers. In this study, we investigated the impact of various metallic substrates, including gold and silver, and the number of graphene layers on key performance metrics: sensitivity of detection, detection accuracy, and quality factor.
View Article and Find Full Text PDFUnraveling the energy storage mechanism in graphene-based nonaqueous electrochemical capacitors by gap-enhanced Raman spectroscopy.
Nat Commun
July 2024
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China.
Graphene has been extensively utilized as an electrode material for nonaqueous electrochemical capacitors. However, a comprehensive understanding of the charging mechanism and ion arrangement at the graphene/electrolyte interface remain elusive. Herein, a gap-enhanced Raman spectroscopic strategy is designed to characterize the dynamic interfacial process of graphene with an adjustable number of layers, which is based on synergistic enhancement of localized surface plasmons from shell-isolated nanoparticles and a metal substrate.
View Article and Find Full Text PDFOptimal design of graphene-based plasmonic enhanced photodetector using PSO.
Sci Rep
July 2024
Faculty of Electrical Engineering, Shahid Beheshti University, Tehran, 1983969411, Iran.
In this paper, we report a graphene-based plasmonic photodetector optimized using the particle swarm optimization (PSO) algorithm and compatible with complementary metal-oxide-semiconductor (CMOS) technology. The proposed photodetector structure is designed to minimize fabrication challenges and reduce production costs compared to more complex alternatives. Graphene has been used for its unique properties in the detection region, titanium nitride (TiN) as a CMOS-compatible metal, and both to aid in plasmonic excitation.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!