利用仿生 moth's eye 纳米结构实现有机光电子学中的光操控。
Light manipulation for organic optoelectronics using bio-inspired moth's eye nanostructures.
机构信息
1] Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China [2].
Institute of Information Optical Engineering, Soochow University, Suzhou 215006, China.
出版信息
Sci Rep. 2014 Feb 10;4:4040. doi: 10.1038/srep04040.
Organic-based optoelectronic devices, including light-emitting diodes (OLEDs) and solar cells (OSCs) hold great promise as low-cost and large-area electro-optical devices and renewable energy sources. However, further improvement in efficiency remains a daunting challenge due to limited light extraction or absorption in conventional device architectures. Here we report a universal method of optical manipulation of light by integrating a dual-side bio-inspired moth's eye nanostructure with broadband anti-reflective and quasi-omnidirectional properties. Light out-coupling efficiency of OLEDs with stacked triple emission units is over 2 times that of a conventional device, resulting in drastic increase in external quantum efficiency and current efficiency to 119.7% and 366 cd A(-1) without introducing spectral distortion and directionality. Similarly, the light in-coupling efficiency of OSCs is increased 20%, yielding an enhanced power conversion efficiency of 9.33%. We anticipate this method would offer a convenient and scalable way for inexpensive and high-efficiency organic optoelectronic designs.
基于有机的光电设备，包括发光二极管（OLED）和太阳能电池（OSC），作为低成本、大面积的电光设备和可再生能源具有很大的应用前景。然而，由于传统器件结构中光的提取或吸收有限，效率的进一步提高仍然是一个艰巨的挑战。在这里，我们报告了一种通过集成双面仿生 moth-eye 纳米结构来实现光的通用光学操控方法，该结构具有宽带抗反射和准各向同性特性。堆叠三重发射单元的 OLED 的光取出效率是传统器件的 2 倍以上，导致外量子效率和电流效率分别大幅增加到 119.7%和 366 cd A(-1)，而不会引入光谱失真和方向性。同样，OSC 的光耦合效率提高了 20%，从而使功率转换效率提高到 9.33%。我们预计，这种方法将为低成本、高效率的有机光电设计提供一种方便和可扩展的途径。
Zotero 插件