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Achieving Efficient Self-Driven Full-Stokes Photodetection in Optically Active Ferroelectric.

Zhijin Xu1,2, Tianqi Chen1, Jing Liang1

  • 1State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P.R. China.

Angewandte Chemie (International Ed. in English)
|July 30, 2025
PubMed
Summary

Researchers developed a novel optically active ferroelectric material for self-driven full-Stokes polarization detection. This breakthrough enables efficient, compact polarization sensing without external bias, crucial for advanced imaging and robotics.

Keywords:
Full‐Stokes photodetectionOptically active ferroelectricSelf‐driven

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Solid-State Physics

Background:

  • Full-Stokes polarization detection is vital for applications like target identification and 3D reconstruction.
  • Simultaneous detection of multiple polarization states in compact devices presents a significant challenge.

Purpose of the Study:

  • To report a novel optically active ferroelectric material for self-driven full-Stokes polarization detection.
  • To demonstrate the material's capability for simultaneous linear and circular polarization detection without external bias.

Main Methods:

  • Synthesis and characterization of the optically active ferroelectric OA2EA2Pb3Br10 (1).
  • Utilizing the bulk photovoltaic effect for self-driven photodetection.
  • In-plane photodetection configuration to measure polarization parameters.

Main Results:

  • The material enables self-driven full-Stokes polarization detection.
  • Achieved high linear polarization ratio (2.7) and circular polarization anisotropy factor (0.46).
  • Low average measurement errors (3.2%-5.3%) for Stokes parameters were obtained.

Conclusions:

  • This study introduces a new paradigm for designing ferroelectric materials for self-driven, filterless full-Stokes polarization detection.
  • The developed material offers a compact and efficient solution for polarization sensing applications.