Sarma Monima, Wong Ken-Tsung
Department of Chemistry National Taiwan University, Taipei, 10617, Taiwan.
Department of Chemistry, KL University (KLEF), Vaddeswaram, Andhra Pradesh, 522502, India.
Chem Rec. 2019 Aug;19(8):1667-1692. doi: 10.1002/tcr.201800156. Epub 2019 Mar 5.
The success of organic light emitting diodes (OLED) has been witnessed by the commercialization of this technology for manufacturing the vivid and colorful displays used in our daily life now. The prospective growth of OLED technology on display industry will be optimistic. Over the last three decades, many different approaches on material and device designs have been implemented for improving the efficiency and stability of OLED devices. These efforts install main cornerstones to support the great achievement of OLED technology. However, until now, the performance and stability of blue OLEDs still have some concerns. This troublesome issue should be totally conquered before the large-scale manufactures dominated over other display technologies, particularly liquid crystal-based displays, takes place. Though significant progress has already been made to achieve high performance and long lifetime blue OLEDs, this topic still remains as one of the hot researches in OLEDs. We have been working on this area for about two decades and made some notable contributions. Consequently, in this personal account we have outlined our efforts to obtain better performing blue OLEDs by utilizing a range of emitters based on fluorescence, phosphorescence, delayed fluorescence and exciplex systems. We have also developed some novel host materials for blue OLEDs, which are worth mentioning in this account.
有机发光二极管（OLED）技术已成功实现商业化，用于制造如今我们日常生活中使用的色彩鲜艳、生动逼真的显示屏。OLED技术在显示行业的未来发展前景十分乐观。在过去三十年里，人们在材料和器件设计方面采用了多种不同方法来提高OLED器件的效率和稳定性。这些努力为OLED技术取得巨大成就奠定了主要基石。然而，到目前为止，蓝色OLED的性能和稳定性仍存在一些问题。在OLED大规模生产主导其他显示技术（特别是基于液晶的显示器）之前，这个棘手的问题必须彻底解决。尽管在实现高性能、长寿命蓝色OLED方面已经取得了显著进展，但该主题仍然是OLED领域的热门研究之一。我们在这一领域已经研究了大约二十年，并做出了一些显著贡献。因此，在这篇个人综述中，我们概述了我们通过使用一系列基于荧光、磷光、延迟荧光和激基复合物体系的发光体来获得性能更优的蓝色OLED的努力。我们还开发了一些用于蓝色OLED的新型主体材料，在本综述中值得一提。
