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

Ambient to Cryogenic High-Frequency Response of Zero-Bias Graphene Photodetectors.

ACS applied materials & interfaces·2026
Same author

Optical Fourier Surfaces for Integrated Photonics.

ACS nano·2026
Same author

Emergency Department-initiated standard versus high-dose buprenorphine induction (ENVISION): a randomised clinical trial protocol.

BMJ open·2026
Same author

In vitro bioassays for measuring monoamine transporter function.

Neuropharmacology·2026
Same author

Ultra-Precise Dispensing for Rapid and Flexible Through-Silicon Via Filling.

Materials (Basel, Switzerland)·2026
Same author

De-escalation of adjuvant radio(chemo)therapy for patients with HPV-positive head and neck squamous cell carcinoma: study protocol for a phase I trial to reduce late toxicity (DELPHI).

BMC cancer·2026

Related Experiment Video

Updated: Jun 26, 2025

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
07:51

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

3.2K

Engineering Graphene Phototransistors for High Dynamic Range Applications.

Shadi Nashashibi1, Stefan M Koepfli1, Raphael Schwanninger1

  • 1ETH Zurich, Institute of Electromagnetic Fields, Zurich 8092, Switzerland.

ACS Nano
|May 10, 2024
PubMed
Summary

Researchers developed a graphene phototransistor for artificial vision. This device achieves exceptional low-light detection and a wide dynamic range, outperforming current technologies for bioinspired applications.

Keywords:
adaptabilityair stablebioinspiredenhancementgraphenehigh dynamic rangephototransistor

More Related Videos

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors
09:59

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

Published on: June 23, 2018

7.8K
Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

15.4K

Related Experiment Videos

Last Updated: Jun 26, 2025

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection
07:51

Development and Functionalization of Electrolyte-Gated Graphene Field-Effect Transistor for Biomarker Detection

Published on: February 1, 2022

3.2K
Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors
09:59

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

Published on: June 23, 2018

7.8K
Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

15.4K

Area of Science:

  • Optoelectronics
  • Materials Science
  • Bioinspired Engineering

Background:

  • Phototransistors offer high dynamic range and low-light detection, crucial for bioinspired vision.
  • Graphene-based devices are explored for advanced photodetector applications.
  • Existing photogating devices have limitations in dynamic range and stability.

Purpose of the Study:

  • To develop a high-performance graphene-based phototransistor for bioinspired applications.
  • To achieve picowatt-level photodetection with a broad dynamic range.
  • To demonstrate air stability and improved responsivity in photogating devices.

Main Methods:

  • Fabrication of graphene phototransistors utilizing the photogating effect.
  • Optimization of device geometry, including graphene channel aspect ratio.
  • Integration of a semitransparent top-gate electrode.
  • Implementation of built-in dynamic range compression and responsivity control.

Main Results:

  • Achieved picowatt- to microwatt-level photodetection.
  • Demonstrated a dynamic range spanning six orders of magnitude (7 to 10^7 lux).
  • Obtained a maximum responsivity of 4.7 × 10^3 A/W.
  • Exhibited superior dynamic range and lower optical power detection than state-of-the-art interfacial photogating devices.
  • Confirmed stable operation in air.
  • Reported a 20-30 fold improvement in responsivity through optimized geometry and top-gate electrode.

Conclusions:

  • The developed graphene phototransistor exhibits unprecedented performance for photodetectors.
  • The device's features, including high dynamic range and low-light sensitivity, are suitable for bioinspired vision systems.
  • Optimized device design and integrated functionalities enhance performance and enable adaptation to varying light conditions.
  • The technology holds significant potential for applications like retinal implants and artificial vision.