90% yield production of polymer nano-memristor for in-memory computing

Polymer memristors with light weight and mechanical flexibility are promising for low-power edge computing, but structural inhomogeneity often causes random switching, reducing yield and reliability at the nanoscale. Using a two-dimensional conjugation strategy, the authors achieve a record ~90% production yield for polymer memristors with miniaturization and low-power potential. Coplanar macromolecules based on 2D-conjugated thiophene derivatives enhance π–π stacking and thin-film crystallinity, enabling homogeneous, bulk switching across the polymer layer. Devices show 32 ns switching, device-to-device variation of 3.16%–8.29%, ~90% production yield, scalability to ~100 nm with energy ~10−15 J/bit, and low programming voltages (~±0.30 V). Arrays perform arithmetic-logic and multiply-accumulate tasks for neuromorphic computing.

Bin Zhang, Weilin Chen, Jianmin Zeng, Fei Fan, Junwei Gu, Xinhui Chen, Lin Yan, Guangjun Xie, Shuzhi Liu, Qing Yan, Seung Jae Baik, Zhi-Guo Zhang, Weihua Chen, Jie Hou, Mohamed E. El-Khouly, Zhang Zhang, Gang Liu, Yu Chen