IR Photodetection at 1.3 to 12 μm Wavelengths with Greater Absorption and Ultrafast Response Time

  • Spectrally selective infrared photodetector operates at wavelengths shorter than 10 μm
  • Based on nanopatterned multilayer graphene intercalated with iron chloride
  • Allows for electrostatic tuning of photodetection outside the range for nanopatterned monolayer graphene (NPG)

Abstract

The University of Central Florida invention is a spectrally selective infrared photodetector based on nanopatterned multilayer graphene intercalated with iron chloride (NPMLG-FeCl3). The design allows for wavelength tuning of the photodetection from λ =1.3 µm to 12 µm and beyond. This expansion in detection range improves on other graphene-based detector designs, as the short-wavelength infrared regime is out of range for nanopatterned monolayer graphene (NPG). Additionally, the device achieves increased absorption and ultrafast response time. These improvements in graphene-based photodetection enhance applications in optical IR communication, IR color displays and IR spectroscopy.

Partnering Opportunity

The research team is seeking partners for licensing and/or research collaboration.

Advantages

  • Increases absorption to nearly 100 percent over the entire infrared wavelength regime from λ =1.3 μm to 12 μm
  • Paves the way to graphene-based photodetection, optical IR communication, IR color displays, and IR spectroscopy in all IR regimes
  • Outperforms state-of-the-art graphene-based photodetectors by enabling strong absorbance locally inside the graphene sheets only

Potential Applications

  • Ultrasensitive infrared photodetection
  • Optical modulation
  • Other optoelectronic applications using multilayer graphene intercalated with FeCl3

Contact Information

Name: Raju Nagaiah

Email: raju@ucf.edu

Phone: 407.882.0593