范德瓦尔斯力
钙钛矿(结构)
电介质
薄膜
相(物质)
材料科学
氢键
金属
化学物理
纳米技术
结晶学
化学
分子
光电子学
有机化学
冶金
作者
Hwa Seob Choi,Jingbo Lin,G. F. Wang,Walter P. D. Wong,In‐Hyeok Park,Fang Lin,Jun Yin,Kai Leng,Junhao Lin,Kian Ping Loh
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2024-04-05
卷期号:384 (6691): 60-66
标识
DOI:10.1126/science.adk8912
摘要
Recently, the emergence of all-organic perovskites with three-dimensional (3D) structures has expanded the potential applications of perovskite materials. However, the synthesis and utilization of all-organic perovskites in 2D form remain largely unexplored because the design principle has not been developed. We present the successful synthesis of a metal-free 2D layered perovskite, denoted as the Choi-Loh van der Waals phase (CL-v phase), with the chemical formula A2B2X4, where A represents a larger-sized cation compared to B and X denotes an anion. The CL-v phase exhibits a van der Waals gap enabled by interlayer hydrogen bonding and can be exfoliated or grown as molecularly thin 2D organic crystals. The dielectric constants of the CL-v phase range from 4.8 to 5.5 and we demonstrate their potential as gate dielectrics for thin-film transistors.
科研通智能强力驱动
Strongly Powered by AbleSci AI