Affiliation:
1. State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China
2. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 China
Abstract
AbstractBirefringent crystals have important applications in optoelectronics areas due to their ability to modulate and polarize light. Despite increasing discovery of the birefringence potential of new crystals, it remains a great challenge to optimize both birefringence and bandgap simultaneously. Herein, a 1D chain‐like hybrid perovskite birefringent crystal designed by 3D‐to‐1D dimensional tailoring, (GAM)2PbI7·H2O (GAM = C5N10H10), is presented, showing enlarged birefringence of 0.49@550 nm and enlarged optical bandgap (2.48 eV). Consequently, the birefringent quality factor of (GAM)2PbI7·H2O is up to 2.8 times that of the template MAPbI3. In particular, the birefringence is much larger than those of commercial birefringent crystals and surpasses that of the vast majority of hybrid perovskite known to date. Theoretical calculations reveal that the strongly anisotropic arrangement of (GAM)2.5+ π‐conjugated cations and ordered PbI6 octahedra contributes to the large birefringence and wide bandgap of (GAM)2PbI7·H2O. It is believed that this work will provide a new pathway toward the rational design and synthesis of hybrid perovskite birefringent crystals for compact wide‐bandgap polarization dependent devices.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Fujian Province
Youth Innovation Promotion Association of the Chinese Academy of Sciences
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
1 articles.
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