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Layered Perovskite-like Nitrate Cs2Pb(NO3)2Br2 as a Multifunctional Optical Material.
Ying Long1, Xuehua Dong1, Hongmei Zeng1
1College of Chemistry, Sichuan University, Chengdu 610065, P. R. China.
Inorganic Chemistry
|February 23, 2022
Summary
A new layered perovskite material, Cs2Pb(NO3)2Br2, was synthesized. It exhibits significant birefringence and light-orange luminescence due to its unique structure and electronic interactions.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Crystallography
Background:
- Layered perovskites are crucial for advanced optical applications.
- Alkali metal lead halide nitrates offer potential for novel functionalities.
- Understanding structure-property relationships is key to designing new materials.
Purpose of the Study:
- To synthesize and characterize a novel alkali metal lead halide nitrate.
- To investigate the multifunctional optical properties of the new compound.
- To elucidate the structural origins of its optical behavior.
Main Methods:
- Hydrothermal synthesis method.
- X-ray diffraction for structural analysis.
- Optical property measurements (birefringence, luminescence).
- Theoretical calculations (density functional theory).
Main Results:
- Successful synthesis of Cs2Pb(NO3)2Br2 with a Ruddlesden-Popper perovskite-like layered structure.
- Observed large birefringence (0.147@546 nm) and broad light-orange emission.
- Identified p-π interaction and distorted PbO4Br4 polyhedra as origins of optical properties.
Conclusions:
- The study introduces a new layered perovskite structure type.
- The findings highlight Cs2Pb(NO3)2Br2 as a promising multifunctional optical material.
- This research provides insights for developing novel all-inorganic optical materials.
