手性层状铅碘钙钛矿铁电体的精准合成与功能、应用探索

Chiral layered lead iodide perovskite ferroelectrics, which combines desirable characteristics from chiral materials, molecular ferroelectrics and organic-inorganic layered lead iodide perovskites, and possess various properties of optical activity, ferroelectricity, piezoelectricity, pyroelectricity, luminescence, semiconductive property and so on, is a new type of promising chiral multifunctional materials. This project aims to achieve precise synthesis of homochiral layered lead iodide perovskite ferroelectrics by introducing flexible homochiral organic cations and supramolecular interactions. Then, we will systematically characterize the structure, chiral related properties, ferroelectric related properties and optoelectronic properties of the enantiomers, deeply analyze the relationship between microstructure and macroscopic properties, and explore their application in solar cell. This work will positively promote the development of new chiral functional materials. The project studies the synthesis, function and application of chiral layered lead iodide perovskite ferroelectrics, which is related to chemistry, physics, material science and other disciplines. This project will connect with other projects from the major program and play a positive role in the accomplishment of the major program.

手性层状铅碘钙钛矿铁电体融合了手性材料、分子铁电材料和有机-无机层状铅碘钙钛矿材料的性能优势，同时具有光学活性、铁电性、压电性、热释电性、发光、半导体特性等多种性质，是一类极具发展前景的新型手性多功能材料。本项目拟通过引入单一手性柔性有机阳离子和超分子作用力，实现对单一手性层状铅碘钙钛矿铁电体的精准合成。系统的表征不同镜像异构体的结构、手性相关性质、铁电相关性质和光电性质，深入分析微观结构与宏观性质之间的关系，探索在太阳能电池中的应用，积极推动新型手性功能材料的发展。本项目是对多层次、跨尺度的手性层状铅碘钙钛矿铁电体的构筑、功能及应用研究，涉及化学、物理、材料等多个学科，能够与项目群其它研究方向相结合，为项目群总体目标的顺利完成起到积极的推动作用。