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

You might also read

Related Articles

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

Sort by
Same author

Fourier pixels for bidirectional light control.

Nature·2026
Same author

Structural and electronic signatures of stacking and intralayer transitions in epitaxial bilayer WSe<sub>2</sub> on GaP(111)B.

Nanoscale·2026
Same author

Strategy for Ultranarrow Light Down-Conversion for Displays Based on Bicolor-Emitting 2D Colloidal Heterostructures.

Nano letters·2026
Same author

Direct visualization of field-driven valence band modulation in electrostatically reconfigured graphene devices.

Reports on progress in physics. Physical Society (Great Britain)·2026
Same author

Correction to "Anomalous Absorption in Arrays of Metallic Nanoparticles: A Powerful Tool for Quantum Dot Optoelectronics".

Nano letters·2026
Same author

Surface Passivation of HgTe Nanocrystals Enabling E<sub>G</sub>/2 Open-Circuit Voltage and Their Coupling to Dielectric Cavity for Narrow Detection.

Advanced materials (Deerfield Beach, Fla.)·2026

Related Experiment Video

Updated: Jul 31, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

8.8K

Inside a nanocrystal-based photodiode using photoemission microscopy.

Mariarosa Cavallo1, Rodolphe Alchaar1, Erwan Bossavit1,2

  • 1Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France. el@insp.upmc.fr.

Nanoscale
|May 9, 2023
PubMed
Summary

Photoemission microscopy reveals the electronic structure of HgTe nanocrystal photodiodes. This technique quantifies the built-in voltage and guides the design of advanced infrared optoelectronic devices.

More Related Videos

Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices
11:06

Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices

Published on: July 8, 2016

10.5K
Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
09:12

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Published on: May 28, 2016

11.2K

Related Experiment Videos

Last Updated: Jul 31, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

8.8K
Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices
11:06

Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices

Published on: July 8, 2016

10.5K
Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
09:12

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Published on: May 28, 2016

11.2K

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Nanocrystal-based devices require understanding electronic structure for optimization.
  • Existing spectroscopic techniques often neglect real-world operating conditions like electric fields and illumination.
  • In situ and operando probing methods are crucial for device development.

Purpose of the Study:

  • To explore photoemission microscopy for analyzing the energy landscape of HgTe nanocrystal (NC)-based photodiodes.
  • To demonstrate the capability of photoemission microscopy for direct quantification of a photodiode's built-in voltage.
  • To investigate the influence of particle size and illumination on device performance.

Main Methods:

  • Development of a planar diode stack for surface-sensitive photoemission measurements.
  • Application of photoemission microscopy to a HgTe NC-based photodiode.
  • Analysis of electron and hole transport layers (SnO2 and Ag2Te) for extended-short-wave infrared applications.

Main Results:

  • Direct quantification of the photodiode's built-in voltage using photoemission microscopy.
  • Identification of optimal electron (SnO2) and hole (Ag2Te) transport layers for extended-short-wave infrared materials.
  • Observation and proposed mitigation strategy for photodoping effects on the SnO2 layer.

Conclusions:

  • Photoemission microscopy is a valuable tool for in situ and operando characterization of nanocrystal devices.
  • The method provides direct insights into built-in voltage and environmental influences.
  • This technique facilitates rapid screening of diode design strategies for improved optoelectronic performance.