Sub-micron spin-based magnetic field imaging with an organic light emitting diode

Area of Science:

• Solid-state physics
• Quantum sensing
• Optoelectronics

Background:

• Quantum sensing offers high sensitivity and resolution for magnetic field imaging.
• Current methods often require optical excitation or cryogenic temperatures, hindering scalability.
• There is a need for compact, chip-scale magnetic field sensors.

Purpose of the Study:

• To demonstrate an integrated organic light-emitting diode (OLED) based solid-state sensor for magnetic field imaging.
• To achieve sub-micron magnetic field mapping using spatially resolved magnetic resonance.
• To develop a commercially relevant and manufacturable magnetic field sensing technology.

Main Methods:

• Utilized a monolithic organic light-emitting diode (OLED) as an array of virtual sensors.
• Employed spatially resolved magnetic resonance for magnetic field mapping.
• Developed a chip-scale, laser-free sensing approach.

Main Results:

• Achieved sub-micron magnetic field mapping.
• Demonstrated a field sensitivity of approximately 160 µT Hz^-1/2 µm^-2.
• Successfully created a robust mapping of magnetic fields using the integrated OLED sensor.

Conclusions:

• An integrated OLED-based solid-state sensor for magnetic field imaging has been successfully demonstrated.
• The developed sensor is chip-scale, laser-free, and manufacturable.
• This technology overcomes limitations of existing quantum sensing methods for practical applications.