Polyacrylonitrile Passivation for Enhancing the Optoelectronic Switching Performance of Halide Perovskite Memristor for Image Boolean Logic Applications

Xiaohan Zhang; Xiaoning Zhao; Zhongqiang Wang

doi:10.3390/nano13152174

Polyacrylonitrile Passivation for Enhancing the Optoelectronic Switching Performance of Halide Perovskite Memristor for Image Boolean Logic Applications

Nanomaterials (Basel). 2023 Jul 26;13(15):2174. doi: 10.3390/nano13152174.

Authors

Xiaohan Zhang¹, Xiaoning Zhao¹, Zhongqiang Wang¹

Affiliation

¹ Key Laboratory of UV-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China.

Abstract

For the CH₃NH₃PbI₃-based optoelectronic memristor, the high ion-migration randomness induces high fluctuation in the resistive switching (RS) parameters. Grain boundaries (GBs) are well known as the ion-migration sites due to their low energy barrier. Herein, a polyacrylonitrile (PAN) passivation method is developed to reduce GBs of the CH₃NH₃PbI₃ film and improve the switching uniformity of the memristor. The crystal grain size of CH₃NH₃PbI₃ increases with the addition of PAN, and the corresponding number of GBs is consequently reduced. The fluctuations of the RS parameters of the memristor device are significantly reduced. With the memristor, nonvolatile image sensing, image memory, and image Boolean operations are demonstrated. This work proposes a strategy for developing high-performance CH₃NH₃PbI₃ optoelectronic memristors.

Keywords: image Boolean operations; ion migration; optoelectronic memristor; organic–inorganic halide perovskites; polyacrylonitrile.

Abstract

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