Fan Chang-Chun, Liu Cheng-Dong, Liang Bei-Dou, Ju Tong-Yu, Wang Wei, Jin Ming-Liang, Chai Chao-Yang, Zhang Wen
College of Materials Engineering, Jinling Institute of Technology Nanjing 211169 China.
Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, School of Chemistry and Chemical Engineering, Southeast University Nanjing 211189 China
Chem Sci. 2024 Jun 14;15(29):11374-11381. doi: 10.1039/d4sc00954a. eCollection 2024 Jul 24.
Chiral hybrid metal halides (CHMHs) have received a considerable amount of attention in chiroptoelectronics, spintronics, and ferroelectrics due to their superior optoelectrical properties and structural flexibility. Owing to limitations in synthesis, the theoretical prediction of room-temperature stable chiral three-dimensional (3D) CHFClNHPbI has not been successfully prepared, and the optoelectronic properties of such structures cannot be studied. Herein, we have successfully constructed two pairs of chiral 3D lead iodide hybrids (//-3AEP)PbI (3//, 3AEP = 3-(1-aminoethyl)pyridin-1-ium) and (//-2AEP)PbI (2//, 2AEP = 2-(1-aminoethyl)pyridin-1-ium) through chiral introduction and substitution strategies, and obtained bulk single crystals of 3//. The 3/ exhibits optical activity and bulk photovoltaic effect induced by chirality. The 3 crystal device exhibits stable circularly polarized light performance at 565 nm with a maximum anisotropy factor of 0.07, responsivity of 0.25 A W, and detectivity of 3.4 × 10 jones. This study provides new insights into the synthesis of chiral 3D lead halide hybrids and the development of chiral electronic devices.
手性杂化金属卤化物（CHMHs）因其优异的光电性能和结构灵活性，在手性光电子学、自旋电子学和铁电学领域受到了广泛关注。由于合成方面的限制，室温稳定的手性三维（3D）CHFClNHPbI的理论预测尚未成功制备，此类结构的光电性能也无法进行研究。在此，我们通过手性引入和取代策略成功构建了两对手性3D碘化铅杂化物（//-3AEP）PbI（3//，3AEP = 3-(1-氨基乙基)吡啶-1-鎓）和（//-2AEP）PbI（2//，2AEP = 2-(1-氨基乙基)吡啶-1-鎓），并获得了3//的块状单晶。3/表现出光学活性和由手性诱导的体光伏效应。3晶体器件在565 nm处表现出稳定的圆偏振光性能，最大各向异性因子为0.07，响应度为0.25 A W，探测率为3.4×10琼斯。本研究为手性3D卤化铅杂化物的合成以及手性电子器件的开发提供了新的见解。
