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Exfoliation and Analysis of Large-area, Air-Sensitive Two-Dimensional Materials

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Published on: January 5, 2019

Black phosphorus photodetector for multispectral, high-resolution imaging.

Michael Engel¹, Mathias Steiner, Phaedon Avouris

¹IBM Thomas J. Watson Research Center , Yorktown Heights, New York 10598, United States.

|October 10, 2014

Summary

This study introduces a multilayer black phosphorus photodetector for high-contrast imaging in visible and infrared light. The device shows potential for advanced hyperspectral imaging applications.

Keywords:

Black phosphorus imaging near-infrared optoelectronics photodetector

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Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence

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Area of Science:

Materials Science
Optoelectronics
Nanotechnology

Background:

Black phosphorus is a layered semiconductor with significant research interest for optoelectronic applications.
Developing efficient photodetectors is crucial for advanced imaging technologies.

Purpose of the Study:

To investigate a multilayer black phosphorus photodetector for high-contrast imaging.
To evaluate its performance in both visible and infrared spectral regimes.
To demonstrate its utility in hyperspectral imaging.

Main Methods:

Photocurrent microscopy was used to map the device's active area, responsivity, and gain.
The black phosphorus device was employed as a point-like detector in a confocal microscope setup.
Diffraction-limited optical images with submicron resolution were acquired.

Main Results:

The photodetector achieved high-contrast imaging (V > 0.9) in both visible (532 nm) and infrared (1550 nm) light.
Submicron resolution imaging was successfully demonstrated.
Characterization revealed the device's responsivity and gain.

Conclusions:

Multilayer black phosphorus is a promising material for optoelectronic devices.
The developed photodetector is suitable for high-performance imaging applications.
This work highlights the potential of black phosphorus in hyperspectral imaging.