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Symmetry Breaking in High-Speed Synthesized Chiral Two-Dimensional Perovskite Single Crystals Enabling

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  • 1Institute of New Energy Technology, College of Physics & Optoelectronic Engineering, Jinan University, Guangzhou, Guangdong 510632, China.

Nano Letters
|January 21, 2026
PubMed
Summary

This study presents a novel synthesis method for chiral perovskite crystals, enabling rapid, defect-tolerant growth. This breakthrough facilitates high-performance, polarization-sensitive optoelectronics for advanced imaging applications.

Keywords:
chiral 2D perovskitesferroelectricityhydrothermal synthesislinear polarization responseoptoelectronic devices

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Area of Science:

  • Materials Science
  • Crystallography
  • Solid-State Physics

Background:

  • Controlling non-centrosymmetry in chiral 2D perovskites is crucial for their function but challenging for scalable growth.
  • Chiral perovskites offer unique properties due to their asymmetry, impacting device performance.

Purpose of the Study:

  • To develop a scalable method for rapid, defect-tolerant growth of chiral perovskite single crystals.
  • To investigate the relationship between structural asymmetry and optoelectronic properties.

Main Methods:

  • High-pressure hydrothermal synthesis.
  • Temperature-dependent single-crystal X-ray diffraction.
  • First-principles calculations.

Main Results:

  • Achieved order-of-magnitude faster kinetics for chiral perovskite crystal growth with high homogeneity and non-centrosymmetric ordering.
  • Observed a reversible polar-to-centrosymmetric phase transition.
  • Demonstrated highly anisotropic carrier transport and a linear polarization ratio (LPR) of ≈0.97 in photodetectors.

Conclusions:

  • The developed synthesis method provides a scalable platform for producing chiral perovskite crystals.
  • Engineered structural asymmetry leads to excellent polarization sensitivity, enabling polarization-resolved imaging.
  • Establishes a design paradigm for high-performance, polarization-sensitive optoelectronics through symmetry breaking.