Toward Highly Robust Nonvolatile Multilevel Memory by Fine Tuning of the Nanostructural Crystalline Solid-State Order.
Yang LiCheng ZhangSongtao LingChunlan MaJinlei ZhangYucheng JiangRun ZhaoHua LiJianmei LuShanqing ZhangPublished in: Small (Weinheim an der Bergstrasse, Germany) (2021)
Organic resistive memory (ORM) offers great promise for next-generation high-density multilevel-cell (MLC) data storage. However, the fine tuning of crystalline order among its active layer still remains challenging, which largely restricts ORM behavior. Here, an exceptional solid-state transition from disordered orientations to highly-uniform orientation within the ORM layer is facilely triggered via molecular strategic tailoring. Two diketopyrrolopyrrole-based small molecular analogues (NI1 TDPP and NI2 TDPP) are demonstrated to display different symmetry. The asymmetric NI1 TDPP shows an irregular solid-state texture, while the centro-symmetric NI2 TDPP conforms to an ordered out-of-plane single-crystalline pattern that aligns with the foremost charge transportation along the substrate normal, and exhibits excellent MLC memory characteristics. Moreover, this highly oriented pattern guarantees the large-area film uniformity, leading to the twofold increase in the yield of as-fabricated ORM devices. This study reveals that the solid-state crystalline nanostructural order of organic materials can be controlled by reasonable molecular design to actuate high-performance organic electronic circuits.
Keyphrases
- solid state
- room temperature
- high density
- working memory
- air pollution
- metal organic framework
- transition metal
- big data
- water soluble
- single molecule
- electronic health record
- cell therapy
- single cell
- magnetic resonance imaging
- ionic liquid
- magnetic resonance
- machine learning
- computed tomography
- artificial intelligence
- mesenchymal stem cells