Organic–inorganic hybrid halide perovskites (OHHPs) offer excellent resistive switching (RS) properties, making them candidates for applications involving low-cost, flexible memories. However, compared with the operational stability of traditional oxide-based RS materials, the operational stability (in terms of endurance and retention) of OHHPs remains an obstacle to their use in RS memories. This paper reports an RS memory with reliable nonvolatile bipolar RS characteristics; the resistive layer is fabricated using a triple-cation perovskite owing to its structural stability and low sensitivity to the atmosphere. These devices offer operational stability over 10³ endurance cycles and a retention time of up to 10⁵ s through an adjustable forming process, which exceeds that of the most previous reports for OHHP-based RS memories with electrodes of Au, graphene, and Al. To better understand the RS mechanism, we simulated the evolution of iodine vacancies using a kinetic Monte Carlo model to elucidate the dynamics of conductive filaments and the device-failure mechanism. The results of this study should improve the stability and increase the understanding of the RS mechanism of OHHP-based memories.

中文翻译：

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具有增强的耐用性和保持力的三阳离子钙钛矿电阻开关存储器

有机-无机杂化卤化物钙钛矿（OHHP）具有出色的电阻转换（RS）特性，使其成为涉及低成本，灵活存储器的应用的候选者。但是，与传统的基于氧化物的RS材料相比，OHHP的操作稳定性（在耐久性和保留性方面）仍然是其在RS存储器中使用的障碍。本文报告了一种具有可靠的非易失性双极性RS特性的RS存储器。电阻层由于其结构稳定性和对大气的低敏感性而使用三阳离子钙钛矿制造。这些器件可在10 ^3个耐久性周期内提供操作稳定性，并具有高达10 ⁵的保留时间通过可调节的形成过程，这超过了关于带有Au，石墨烯和Al电极的基于OHHP的RS存储器的最新报道。为了更好地理解RS机理，我们使用动力学蒙特卡洛模型模拟了碘空位的演化，以阐明导电丝的动力学和器件失效机理。这项研究的结果应提高稳定性，并增加对基于OHHP的内存的RS机制的了解。