AI Article Synopsis
- Birefringent crystals that can change light polarization are crucial for optoelectronic applications, and recent research has focused on physical methods to achieve this instead of just chemical strategies.
- This study highlights the discovery of heat-induced birefringence switching in a specific 2D hybrid halide perovskite crystal (C N H)PbCl, which causes noticeable changes in color when illuminated with polarized light.
- The observed phenomenon is linked to a heat-dependent structural change in the crystal, where the distortion of the PbCl octahedron plays a key role, potentially paving the way for advanced polarization optical devices that respond to environmental stimuli.
Article Abstract
Birefringent crystals that can switch light polarization have important applications in optoelectronics. In the last decades, birefringence is mostly optimized by chemical strategies. Recently, switching birefringence by physical means has attracted much attention. Here, this work reports the observation of heat switching birefringence in a 2D layered hybrid halide perovskite (C N H ) PbCl ((C N H ) =1,2,4-triazolium). This heat switching birefringence leads to a significant change in the interference color for the crystal plate under the illumination of orthogonal polarized light. Structure analyses reveal a heat dependent structure transition in (C N H ) PbCl , whose birefringence is switched by the change in the distortion degree of PbCl octahedron. This discovery may be beneficial to the further development of stimuli-responsive polarization optical devices.
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| http://dx.doi.org/10.1002/anie.202311086 | DOI Listing |
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