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| 论文摘要： | Metal halide perovskite materials exhibit significant potential for linear polarization applications owing to their unique chemical composition, crystal structure, and exceptional optoelectronic properties. However, their intrinsic soft ionic nature, arising from dynamic lattice behavior and weak ionic bonding, presents substantial challenges in achieving precise control over assembly morphology, thereby limiting their effectiveness in linear polarization applications. Here, we report the synthesis of CsPbI3 perovskite nanorod assemblies with a distinctive double-headed brush morphology via a one-step hot-injection method. This unique remote assembly structure, featuring feather-like protrusions at both ends and an enhanced moment of inertia, effectively stabilizes the horizontal orientation distribution of nanorod assemblies in solution. Consequently, the double-headed brush nanorod assemblies demonstrate remarkable emission anisotropy, achieving a high linear polarization degree of approximately 0.52. This study showcases precise morphological control over CsPbI3 nanorod assemblies, leveraging the non-filtered linear polarization properties of the double-headed brush architecture, and underscores the promising potential of CsPbI3 perovskite materials for advancing next-generation optical display. |
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