Exciton-induced Degradation of Interfaces in Organic Optoelectronic Devices

有机光电器件中激子引起的界面退化

• 批准号: RGPIN-2014-04940
• 负责人: Aziz, Hany
• 金额: $ 4.44万
• 依托单位: University of Waterloo
• 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=588107
• 关键词: Exciton; induced; Degradation; Interfaces; Organic

The last two decades have witnessed a strong interest in organic semiconductor-based optoelectronic devices for utilization in various applications including solid state lighting, flat panel displays and solar cells. This interest is motivated by a number of key advantages that organic semiconductors have, such as (i) the possibility to obtain light emission in a wide range of colors (ii) easier and cheaper fabrication including the ability to fabricate them on different substrates and in large areas, and (iii) their unique ability to realize mechanically flexible and transparent devices for next generation electronics. Despite their advantages, devices utilizing these materials, such as Organic Light Emitting Devices (OLEDs), Organic Solar Cells (OSCs) generally have lower durability in comparison to those based on traditional materials. We recently discovered that exposure to light, either from external sources, as in case of OSCs, or to light produced by the device itself, as in case of OLEDs, causes significant changes in these devices, especially at interfaces between different materials. This previously unknown phenomenon appears to be responsible for the fast deterioration in efficiency in these devices. The proposed research aims to uncover the factors behind this phenomenon and to develop approaches to control them, thus improve device service life. The research will utilize a number of experimental techniques pioneered by the applicant and will build on findings from his previous work in this area. Seven graduate students will participate in this research. The research results will be critical for future development of more stable OLEDs and OSCs, which will be pursued in collaboration with Canadian industrial partners. It will, therefore, provide those partners with a competitive edge in an emerging technology of tremendous potential for next generation electronics and energy conversion devices. The research will also allow training of a new “breed” of Canadian researchers who will acquire expertise in an emerging technology that has the potential to enable new products and market opportunities.

在过去的二十年里，人们对基于有机半导体的光电器件在固态照明、平板显示器和太阳能电池等各种应用中的应用产生了浓厚的兴趣，这种兴趣是由有机半导体具有的许多关键优势所激发的，例如。 (i) 获得多种颜色的光发射的可能性 (ii) 更容易、更便宜的制造，包括在不同基板上和大面积上制造它们的能力，以及 (iii) 实现机械柔性和透明器件的独特能力尽管他们的下一代电子产品。优点是，与基于传统材料的设备相比，使用这些材料的设备（例如有机发光设备（OLED）、有机太阳能电池（OSC））通常具有较低的耐用性。对于 OSC，或器件本身产生的光（如 OLED）会导致这些器件发生显着变化，特别是在不同材料之间的界面处，这种以前未知的现象似乎是导致这些器件效率快速恶化的原因。设备。 拟议的研究旨在揭示这种现象背后的因素，并开发控制它们的方法，从而提高设备的使用寿命。该研究将利用申请人首创的多种实验技术，并将建立在他之前在该领域的工作成果的基础上。七名研究生将参与这项研究，研究结果对于未来开发更稳定的 OLED 和 OSC 至关重要，该研究将与加拿大工业合作伙伴合作，因此将为这些合作伙伴提供竞争优势。新兴技术对下一代电子产品具有巨大潜力该研究还将培训一批新的加拿大研究人员，他们将获得新兴技术的专业知识，从而有可能创造新产品和市场机会。