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）代表了昂贵且不灵活的无机PV技术的新兴潜在替代方案。为了使光伏负担得起，每千瓦峰的价格必须低于0.3 $/m2。由于其成本较低，有机技术需要在经济上可行才能获得适度的绩效效率。通常，已经观察到设备性能和稳定性取决于高功能（即二锡氧化物）和低功能（即Al）电极的电极结构。合并各种层间是提高设备效率和运营稳定性以达到10-10个目标的主要设计策略（10％效率10年寿命）。环境处理技术是生产廉价设备的关键。因此，该研究计划的主要有针对性创新是要使用非vacuum技术，特别是纳米颗粒的反向胶束沉积来实现有机设备的可行结构化电极的生产。这样的方法将提供一种系统的产生周期性结构的方法，同时消除了热蒸发的需求。已经看到在电极上引入纳米颗粒阵列可修饰表面工作函数和形态，从而导致更高的性能设备。通过使用反向胶束方法，可以通过利用调整电子结构和形态的能力来取消为中间层中选择的材料的作用。必不可少的第一步是用可调的分散剂产生和表征每个电极，然后用新的电极产生二极管，并用传统产生的电极以效率和寿命进行基准测试。期望的结果是两个折。一个目标是建立传统产生的电极的可行替代方案，具有可控且可调的界面粗糙度和周期性。第二个目标是阐明在两个电极接口处使用纳米颗粒分散体改善设备性能和稳定性的机制，以及界面粗糙度对设备性能的影响。