Uniaxial-Oriented Chiral Perovskite for Flexible Full-Stokes Polarimeter

Area of Science:

• Optoelectronics
• Materials Science
• Photonics

Background:

• Current full-Stokes polarization detection methods often rely on bulky optical filters, limiting device integration and portability.
• Next-generation optoelectronic systems require compact and efficient polarization detection capabilities.

Purpose of the Study:

• To develop a flexible, filter-less full-Stokes polarimeter.
• To utilize a uniaxial-oriented chiral perovskite film for polarization detection.
• To demonstrate the potential for matrix polarization imaging.

Main Methods:

• Fabrication of a uniaxial-oriented chiral perovskite film using surfactant-mediated Marangoni effect during blade coating.
• Characterization of the film's anisotropic and chiral properties.
• Integration of the film into a flexible polarimeter device for full-Stokes measurement.

Main Results:

• Achieved a specific detectivity of 5.23 × 10^13 Jones, a 10x improvement over non-oriented devices.
• Demonstrated accurate full-Stokes polarization capture with low errors (ΔS1=9.2%, ΔS2=8.6%, ΔS3=6.5%).
• Successfully applied the device to matrix polarization imaging.

Conclusions:

• The developed uniaxial-oriented chiral perovskite film enables filter-less, flexible full-Stokes polarimetry.
• The fabrication method offers a pathway to highly sensitive and portable polarization detection devices.
• This technology holds promise for advanced multi-information optoelectronic systems and imaging applications.