The integration of energy-saving electrochromic systems with novel functions and features in a single smart multifunctional device promises to achieve remarkable technological advancements for a wide range of consumer products showing more versatility, responsivity to different external inputs, and ability to operate in interactive modes. Here, we report a novel architecture in which a solid-state electrochromic cell and a solid-state organic light emitting diode are fully integrated in a single, highly transparent, solid-state electrochromic OLED device. This multifunctional device is capable of tuning its optical properties such as transmittance (chromic transition) and of producing light by electroluminescence, simultaneously or independently. The rational design of the solid-state electrochromic cell and the highly transparent OLED enables the construction of the integrated device in a monolithic unit. In such a structure the photonic architecture of the OLED device not only guarantees high transmittance, but, operating synergically with the electrochromic component, it outperforms the optical properties and electrochromic responses by the interference phenomenon, achieveing an optical contrast of 57% (ΔT_{bleaching/colouring} @ 650 nm), and a coloration efficiency of 169 cm² C⁻¹, with very low energy consumption (80 mW cm⁻²). The OLED component exhibits luminance above the minimum values required for display and lighting applications, which are 300 cd m⁻² and above 800 cd m⁻², respectively. This result represents a further step towards the development of next-generation multifunctional EC devices such as full solid-state photoelectrochromic devices, and, importantly, this can open the way for new electrochromic “smart” window systems such as retail display windows or display EC glasses for augmented reality.

中文翻译：

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完全集成的电致变色OLED设备，用于高度透明的智能眼镜†

将节能的电致变色系统与新颖的功能和特性集成到单个智能多功能设备中，有望为各种消费品实现非凡的技术进步，这些消费品显示出更多的多功能性，对不同外部输入的响应能力以及在交互模式下运行的能力。在这里，我们报告了一种新颖的架构，其中固态电致变色单元和固态有机发光二极管完全集成在单个高度透明的固态电致变色OLED器件中。该多功能装置能够同时或独立地调节其光学性质，例如透射率（变色），并能够通过电致发光产生光。固态电致变色电池和高度透明的OLED的合理设计使得能够在单片单元中构建集成器件。在这种结构中，OLED器件的光子结构不仅可以确保高透射率，而且可以与电致变色组件协同工作，通过干涉现象胜过光学性质和电致变色响应，从而实现了57％的光学对比度（ΔT_{漂白/着色}@ 650 nm），着色效率为169 cm ² C ^-1，能耗极低（80 mW cm ^-2）。OLED组件的亮度高于显示和照明应用所需的最小值，分别为300 cd m ^-2和800 cd m ^-2以上。这一结果代表了向下一代多功能EC设备（例如全固态光电致变色设备）发展的又一步，并且重要的是，这可以为新型电致变色“智能”窗口系统（例如零售展示窗或展示EC）开辟道路。增强现实眼镜。