title: Bistable memory devices with lower threshold voltage by extending the molecular alkyl-chain length.
abstract: Three organic small molecules with alkyl chains of different lengths based on an azobenzene scaffold were designed and synthesized. The indium-tin oxide (ITO)-Azo-Al sandwich memory devices showed write-once-read-many-times (WORM) characteristics. The switch threshold voltage of Azo-based memory devices significantly decreased as the end-capping alkyl chain extends, which is totally consistent with the AFM and X-ray diffraction results that the thin films showed smoother morphologies and closer intermolecular packing with the molecular alkyl-chain length prolonging. These results demonstrated that variation in the alkyl-chain length at the end of the conjugated molecules is a powerful strategy for tuning film microstructure and intermolecular packing to enable high performance of the fabricated sandwiched devices.
authors: College of Chemistry, Chemical Engineering and Materials Science, China Petroleum and Chemical Industry Key Laboratory of Organic Wastewater Adsorption Treatment & Resource, Soochow University, Suzhou, Jiangsu 215123, China.
authors: Wusheng
authors: W
authors: Ren
authors: Yongxiang
authors: Y
authors: Zhu
authors: Jianfeng
authors: J
authors: Ge
authors: Xufeng
authors: X
authors: Xu
authors: Ru
authors: R
authors: Sun
authors: Najun
authors: N
authors: Li
authors: Hua
authors: H
authors: Li
authors: Qingfeng
authors: Q
authors: Xu
authors: Junwei
authors: J
authors: Zheng
authors: Jianmei
authors: J
authors: Lu