石墨烯
异质结
材料科学
氧化物
纳米技术
光电子学
突触可塑性
Crystal(编程语言)
化学
计算机科学
生物化学
受体
冶金
程序设计语言
作者
Bin Liu,Yinxiang Li,Xuemei Dong,Chen Chen,Zixi He,Keyuan Pan,Hongyan Sun,M. Xu,Zifan Li,Yueyue Wu,Juqing Liu
标识
DOI:10.1002/admt.202302017
摘要
Abstract 2D van der Waals heterostructures (2D vdWHs) have been gaining significant attention in neuromorphic electronics. However, the facile synthesis of large‐scale, high‐quality freestanding 2D vdWHs remains challenge, particularly for organic counterparts due to susceptible nucleation behaviors and weak intermolecular interactions. Here, the study reports a graphene oxide (GO)‐assisted molecular crystal co‐assembly method for one‐step growth of centimeter‐scale freestanding heterostructures. This co‐assembly involves the simultaneous assembling of organic and GO precursors at the liquid–liquid interface, where the amphiphilic nature of GO nanosheets facilitates the diffusion of organic molecules and 2D nucleation of organic crystals, and the nanosheets also become enriched to grow a quasi‐solid film for the bilayer formation. Owing to integrated photosensitive and charge‐trapping properties as well as type II band structure, this heterostructure exhibits exceptional photonic synaptic behaviors, with a paired‐pulse facilitation index of 141% and image recognition of 91%.
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