Investigating electrical aging phenomena in blue organic light emitting devices

研究蓝色有机发光器件的电老化现象

• 批准号: 355411-2008
• 负责人: Aziz, Hany
• 金额: $ 2.61万
• 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: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=497957
• 关键词: Investigating; electrical; aging; phenomena; blue

Recent years have witnessed an enormous interest in the emerging technology of organic light emitting devices (OLEDs) for flat panel display applications. Compared to alternative technologies (e.g. liquid crystal displays or plasma displays), OLEDs promise higher efficiency (hence lower power consumption), more vivid emission colors (hence better image quality), and a unique potential for realizing mechanically flexible displays for "foldable", "roll-able", "wearable" and "unbreakable" or ruggedized electronics (hence new products and market opportunities). However, the relatively poor device stability, especially that of blue-emitting OLEDs (which, alongside red and green-emitting OLEDs, are necessary for full color displays) limits wider technology commercialization. Developing more stable blue OLEDs is essential for expanding their range of applications, especially in high value-added products (e.g. laptop displays). However, the realization of more stable blue OLEDs has been hampered by the lack of a clear understanding of the underlying degradation factors. The proposed research aims at identifying and understanding the factors behind the EL degradation in blue OLEDs. The investigation will proceed along three distinct yet complementary thrusts that will provide useful information on different aspects of device EL degradation processes. The thrusts utilize a number of experimental techniques pioneered by the applicant from his previous studies on green OLEDs. The research results will be critical for future development of more stable blue OLEDs, which will be pursued in collaboration with Canadian industrial partners (e.g. Canadian displays companies and others in related sectors). It will, therefore, provide those partners with a competitive edge in an area of high relevance to their core business (flat panel displays industry). 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.

近年来，人们对用于平板显示应用的有机发光器件 (OLED) 新兴技术产生了极大的兴趣。 与替代技术（例如液晶显示器或等离子显示器）相比，OLED 具有更高的效率（因此功耗更低）、更鲜艳的发射颜色（因此更好的图像质量）以及实现“可折叠”机械柔性显示器的独特潜力， “可滚动”、“可穿戴”和“牢不可破”或坚固耐用的电子产品（因此是新产品和市场机会）。 然而，相对较差的器件稳定性，尤其是发蓝光的 OLED（与发红光和绿光的 OLED 一起，是全彩显示器所必需的），限制了更广泛的技术商业化。开发更稳定的蓝色 OLED 对于扩大其应用范围至关重要，特别是在高附加值产品（例如笔记本电脑显示器）中。 然而，由于缺乏对潜在退化因素的清晰了解，更稳定的蓝色 OLED 的实现受到了阻碍。拟议的研究旨在识别和理解蓝色 OLED 中 EL 退化背后的因素。 该调查将沿着三个不同但互补的方向进行，这将提供有关器件 EL 退化过程的不同方面的有用信息。 这些推动力利用了申请人在之前对绿色 OLED 的研究中开创的一系列实验技术。 研究结果对于未来开发更稳定的蓝色 OLED 至关重要，该技术将与加拿大工业合作伙伴（例如加拿大显示器公司和相关行业的其他公司）合作进行。因此，它将为这些合作伙伴在与其核心业务（平板显示器行业）高度相关的领域提供竞争优势。 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，该技术有潜力带来新产品和市场机会。