A Flexible Encapsulation Structure for Ambient‐Air Operation of Light‐Emitting Electrochemical Cells
A Flexible Encapsulation Structure for Ambient‐Air Operation of Light‐Emitting Electrochemical Cells
复制标题
DOI：
10.1002/adem.201500245
复制
发表时间：
2016-01
影响因子：
3.6
通讯作者：
A. Asadpoordarvish;A. Sandström;L. Edman
中科院分区：
文献类型：
--
作者：
A. Asadpoordarvish;A. Sandström;L. Edman
有机电子学是新兴领域的先驱，因为它承诺低成本和灵活的器件，最近的研究表明，在环境空气中可以用低成本的方法制造发光电化学电池(LEC)。然而，LEC在发光过程中对氧气和水变得敏感，因此现在是识别灵活的封装结构的时候了。在这里，我们证明了具有≈1×10-3g/m~2/d和≈1×10~(-3)cm~3/m~2/bar/d的阻水和阻氧性能的多层膜适合于这一任务。通过将LEC夹在这种由紫外光固化的环氧树脂连接的多层屏障之间，我们实现了柔性LEC，其性能与相同的玻璃封装器件相当，并且在空气中储存一年后仍可正常工作。
The emerging field of organic electronics is heralded because it promises low‐cost and flexible devices, and it was recently demonstrated that a light‐emitting electrochemical cell (LEC) can be fabricated with cost‐efficient methods under ambient air. However, the LEC turns sensitive to oxygen and water during light‐emission, and it is therefore timely to identify flexible encapsulation structures. Here, we demonstrate that a multilayer film, featuring a water and oxygen barrier property of ≈1 × 10–3 g/m2/day and ≈1 × 10–3 cm3/m2/bar/day respectively, is fit for this task. By sandwiching an LEC between such multilayer barriers, as attached by a UV‐curable epoxy, we realize flexible LECs with performance on par with identical glass‐encapsulated devices, and which remain functional after one year storage under air.