The ability to combine the color-tunability capability of natural organisms with a memory function in a single device is highly desired and holds promise for potential applications such as intelligent artificial skin and human-machine interfaces. In this work, we propose a universal strategy to realize color-tunable skin with the compound function of memory by ingeniously integrating a memristor interface into a flexible quantum-dot light-emitting device. The devices developed using this strategy have multiple responses to electrical and light stimulations and can easily change their color over a wide range from red to green. Moreover, these color-tunable devices can mimic the unique function of “once bitten, twice shy” to enhance self-protection, and their color tunability is consistent with the memory-forgetting curve proposed by psychologists.

在单个设备中将自然生物的颜色可调能力与记忆功能相结合的能力是非常需要的，并且有望用于智能人造皮肤和人机界面等潜在应用。在这项工作中，我们提出了一种通用策略，通过巧妙地将忆阻器界面集成到柔性量子点发光器件中来实现具有复合记忆功能的颜色可调皮肤。使用这种策略开发的设备对电和光刺激有多种反应，并且可以在从红色到绿色的广泛范围内轻松改变颜色。而且，这些颜色可调的设备可以模仿“一次被咬，两次害羞”的独特功能来增强自我保护，它们的颜色可调与心理学家提出的记忆遗忘曲线一致。