This is the “mobile” era, characterized by a growing demand of flexible substrates for novel products such as curved screens, folding smartphones, and wearable devices. In this framework, plastic electronics represents a suitable technology to replace silicon-based electronics. However, up to now, little attention has been devoted to rendering this technology more environmentally sustainable. It is thus necessary to develop new eco-designed devices that allow recycling of all the components and recovering the valuable materials through sustainable methods. For the first time, we report the fabrication of organic light emitting diodes made on an as-cast biopolymeric flexible substrate. Sodium alginate is a natural biodegradable polymer derived from brown algae; it is water-soluble and easy to manipulate for the realization of flat and transparent foils using an environmentally friendly process. Thus, the active stack can be directly deposited on the biopolymer substrate in a bottom-up architecture with no need for a pretreatment or a buffer layer. In addition, the devices can be disassembled and all of the valuable materials almost entirely recovered. This result opens up new and exciting opportunities for the fabrication of electronic and optoelectronic devices with a green platform for an ambient sustainable circular economy.

中文翻译：

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基于柔性生物聚合物基板的完全可回收 OLED

这是“移动”时代，其特点是曲面屏、折叠智能手机和可穿戴设备等新型产品对柔性基板的需求不断增长。在这个框架中，塑料电子代表了一种替代硅基电子的合适技术。然而，到目前为止，很少有人关注使这项技术在环境上更具可持续性。因此，有必要开发新的生态设计设备，允许回收所有组件并通过可持续的方法回收有价值的材料。我们第一次报告了在铸态生物聚合物柔性基板上制造有机发光二极管的情况。海藻酸钠是一种源自褐藻的天然可生物降解聚合物；它是水溶性的，易于操作，可使用环保工艺制成平坦和透明的箔片。因此，活性叠层可以以自下而上的结构直接沉积在生物聚合物基板上，无需预处理或缓冲层。此外，这些设备可以拆卸，几乎可以完全回收所有有价值的材料。这一结果为制造电子和光电设备开辟了新的和令人兴奋的机会，为环境可持续循环经济提供了一个绿色平台。这些设备可以拆卸，几乎可以完全回收所有有价值的材料。这一结果为制造电子和光电设备开辟了新的和令人兴奋的机会，为环境可持续循环经济提供了一个绿色平台。这些设备可以拆卸，几乎可以完全回收所有有价值的材料。这一结果为制造电子和光电设备开辟了新的和令人兴奋的机会，为环境可持续循环经济提供了一个绿色平台。