High efficiency nanostructured electrodes for organic optoelectronics

用于有机光电子学的高效纳米结构电极

• 批准号: 436100-2013
• 负责人: Turak, Ayse
• 金额: $ 1.68万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=574274
• 关键词: efficiency; nanostructured; electrodes; organic; optoelectronics

Organic photovoltaics (OPVs) represent an emerging potential alternative to costly and inflexible inorganic PV technologies. To make PV affordable, the price per kilowatt-peak needs to be below $0.3/m2. Due to their low cost, organic technologies need to make only modest gains in performance efficiency before becoming economically viable. In general, device performance and stability has been observed to depend on the electrode structure of both the high (i.e. indium tin oxide) and low function (i.e. Al) electrode. Incorporation of various interlayers is a major design strategy for improving the device efficiency and operational stability to reach 10-10 targets (10% efficiency-10 year lifetime). Ambient processing techniques are the key to producing inexpensive devices. Therefore, the main targeted innovation of this research program is to realize the production of viable structured electrodes for organic devices using non-vacuum techniques, in particular reverse micelle deposition of nanoparticles. Such an approach would provide a systematic means of producing periodic structures, while simultaneously eliminating the need for thermal evaporation. The introduction of nanoparticle arrays at the electrodes has been seen to modify the surface work function and the morphology, leading to higher performance devices. By using the reverse micelle approach, it will be possible to uncouple the role of the material chosen for the interlayer from the dispersion and roughness, by taking advantage of the ability to tune the electronic structure and morphology. The essential first step is producing and characterizing each of the electrodes, with tunable dispersions, then producing diodes with the new electrodes and benchmarking them with the traditionally produced electrodes for both efficiency and lifetime. The desired outcomes are two fold. One goal is to establish viable alternatives to traditionally produced electrodes, with controllable and tuneable interface roughness and periodicity. A second goal is to clarify the mechanisms for the improvement of device performance and stability with nanoparticle dispersions at both electrode interfaces, and the impact of interface roughness on the device properties.

有机光伏 (OPV) 是昂贵且不灵活的无机光伏技术的新兴潜在替代品。为了使光伏发电价格实惠，每千瓦峰值的价格需要低于 0.3 美元/平方米。由于成本低廉，有机技术只需在性能效率方面取得适度的提高即可在经济上可行。一般来说，已观察到器件性能和稳定性取决于高功能（即氧化铟锡）和低功能（即铝）电极的电极结构。结合各种中间层是提高器件效率和运行稳定性以达到 10-10 目标（10% 效率 - 10 年寿命）的主要设计策略。环境处理技术是生产廉价设备的关键。因此，该研究项目的主要创新目标是利用非真空技术，特别是纳米粒子的反胶束沉积，实现有机器件可行的结构化电极的生产。这种方法将提供一种产生周期性结构的系统方法，同时消除热蒸发的需要。人们发现，在电极处引入纳米颗粒阵列可以改变表面功函数和形态，从而产生更高性能的设备。通过使用反胶束方法，利用调节电子结构和形态的能力，可以将中间层所选择的材料的作用与分散性和粗糙度分开。重要的第一步是生产和表征每个具有可调色散的电极，然后用新电极生产二极管，并用传统生产的电极对它们进行效率和寿命基准测试。期望的结果有两个。目标之一是建立传统生产电极的可行替代品，具有可控和可调的界面粗糙度和周期性。第二个目标是阐明两个电极界面处纳米粒子分散体提高器件性能和稳定性的机制，以及界面粗糙度对器件性能的影响。