Bio-inspired Water-Free Synthesis of Amino Acid-incorporated MAPbBr3 hybrid Perovskites: Correlating Lattice strains to Optical Properties

Our research draws inspiration from biogenic calcite's ability to incorporate biomacromolecules. Through ESRF experiments, we demonstrated the incorporation of amino acids (AAs) into various materials, including methylammonium lead bromide perovskites (MAPbBr3), widening their band gap and improving humidity stability critical for solar cells. Herein, we propose investigating for the first time water-free AA incorporation into MAPbBr3. Our focus is understanding how growth kinetics influence AA incorporation and their impact on crystal structure and optical properties. We'll grow MAPbBr3 crystals in non-water environments with 10 AAs, characterizing their structure via HR-PXRD on ID22. Additionally, we'll analyze the correlation between AA concentration and induced lattice distortions, linking them to changes in optical band gap. We believe this research will pave the way for bio-inspired enhancements in optoelectronic materials.本研究的灵感源自生物成因方解石（biogenic calcite）可嵌入生物大分子的特性。通过欧洲同步辐射装置（ESRF）实验，我们已证实可将氨基酸（amino acids, AAs）掺入多种材料中，包括甲胺铅溴钙钛矿（MAPbBr3），此举可拓宽其带隙并提升对太阳能电池至关重要的湿度稳定性。在此，我们提出首次开展无水氨基酸掺入甲胺铅溴钙钛矿的研究。本研究的核心在于探究生长动力学如何影响氨基酸的掺入过程，以及其对晶体结构与光学性质的作用机制。我们将在非水环境中以10种氨基酸培养甲胺铅溴钙钛矿晶体，并借助ID22光束线的高分辨X射线粉末衍射（HR-PXRD）对其结构进行表征。此外，我们还将分析氨基酸浓度与诱导晶格畸变之间的关联，并将其与光学带隙的变化联系起来。我们相信，本研究将为光电子材料的仿生改性铺平道路。