Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

IR Spectrometers01:25

IR Spectrometers

1.1K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
1.1K
IR Frequency Region: Fingerprint Region01:03

IR Frequency Region: Fingerprint Region

682
IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
682
Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

318
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
318
Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

302
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
302
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

991
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
991
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

258
Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
258

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

K<sup>+</sup>-free mica-assisted epitaxy of Bi-based chalcogenide and oxychalcogenide single-crystals.

Nature communications·2026
Same author

Monolithically integrated photon-mapping infrared imager.

Nature communications·2026
Same author

Dielectric-Confinement-Induced in-Plane Photoelectric Anisotropy in Isotropic Quasi-1D γ-GaS Nanoribbon.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Ultra-narrowband perovskite single-crystal photodetector enabled by dynamic space charge region for portable concentration detection.

Science advances·2026
Same author

Polarization Photovoltage Transistor enabling Amplified Responsivity and Sensitivity.

Nature communications·2026
Same author

Two-dimensional materials for integrated sensing.

Nature materials·2026
Same journal

Vertically Stacked Indium Gallium Zinc Oxide-Based Three-Dimensional Integrated Circuits.

ACS nano·2026
Same journal

Tunable Nanoparticle Thin-Film Reveals Distance Dependence of Auger-Mediated Radiation Enhancement in Diffuse Midline Glioma.

ACS nano·2026
Same journal

G-Quadruplex Network Engineering in Ionogels: Realizing Robust Biosensing Interfaces for Plant Electrophysiology.

ACS nano·2026
Same journal

Announcing the 2026 <i>ACS Nano</i> Lectureship and <i>ACS Nano</i> Impact Award Laureates.

ACS nano·2026
Same journal

Ultrafast Self-Assembly of Zeolitic Imidazolate Framework-8 Enables Antibody Orientation for Ultrasensitive Lateral Flow Immunoassays.

ACS nano·2026
Same journal

Interfacial Salt Engineering with Alkali and Ammonium Additives for Stable Pure-Blue Perovskite Light-Emitting Diodes and Micropatterned Displays.

ACS nano·2026
See all related articles

Related Experiment Video

Updated: May 21, 2025

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

6.2K

van der Waals Complementary Barrier Infrared Detector.

Xiangbao Xu1, Jiachang Chen1,2, Haitao Wu1,2

  • 1Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.

ACS Nano
|May 12, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel van der Waals complementary barrier infrared detector (CBD) that significantly reduces dark current. This uncooled infrared photodetector achieves high performance for infrared detection, polarization sensing, and gas detection at room temperature.

Keywords:
2D materialsSchottkyblackbody responsecomplementary barrierinfrared photodetector

More Related Videos

Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor IRIS
11:04

Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor IRIS

Published on: May 3, 2011

14.6K
Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

9.3K

Related Experiment Videos

Last Updated: May 21, 2025

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
10:42

Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing

Published on: March 22, 2019

6.2K
Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor IRIS
11:04

Biomolecular Detection employing the Interferometric Reflectance Imaging Sensor IRIS

Published on: May 3, 2011

14.6K
Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

9.3K

Area of Science:

  • Optoelectronics
  • Materials Science
  • Nanotechnology

Background:

  • Uncooled infrared photodetectors are crucial for various applications.
  • High dark current in narrow-bandgap materials limits performance.
  • Thermal carrier excitation is a major challenge for infrared photodetector sensitivity.

Purpose of the Study:

  • To propose a van der Waals (vdW) complementary barrier infrared detector (CBD).
  • To overcome the limitations of high dark current in uncooled infrared photodetectors.
  • To achieve high-performance infrared detection, polarization sensing, and gas detection.

Main Methods:

  • Fabrication of a vdW CBD using gold/black phosphorus (Au/BP) Schottky contact and molybdenum disulfide (MoS2).
  • Characterization of dark current, infrared response, and gate-tunable properties.
  • Evaluation of infrared polarization detection and nondispersive infrared (NDIR) gas sensing capabilities.

Main Results:

  • Achieved a low dark current of 0.1 μA at -0.1 V, suppressing diffusion dark current.
  • Demonstrated a peak detectivity of 8.37 × 10^9 cm Hz^1/2 W^-1 under blackbody radiation at room temperature.
  • Exhibited strong infrared polarization detection (anisotropy ratio of 13.9) and sensitive NDIR methane detection (limit of 23.9 ppm).

Conclusions:

  • The vdW CBD effectively suppresses dark current for high-performance infrared detection.
  • The device offers gate-tunable infrared response and polarization sensitivity.
  • This work presents a promising strategy for room-temperature, high-performance vdW infrared photodetectors.