基于OLED的新型有机激光二极管

This research plan combines a number of novel material design and modification strategy, basic studies using electrical and optical characterization, and novel device fabrication/characterization to achieve organic electrical lasing. Resonator structures including Fabry-Perot microcavities and distributed feedback gratings will be integrated into a variety of OLED architectures. The selection of the proper gain medium is also essential to achieve an organic laser diode. For this purpose, three main classes of lasing organic materials will be used in this study: ultralow lasing threshold fluorescent dyes, thermally-activated delayed fluorescent (TADF) dyes showing lasing activity and TADF assisted fluorescent molecular systems. The last two types of materials should enable the harvesting of triplets for light amplification in organic laser diodes. Different methods will then be employed to suppress electroluminescence efficiency roll-off at high current density, to optimize the OLED device architecture to achieve low lasing threshold, and ultimately, to achieve organic lasing under electrical pumping. The successful outcome of this program will serve as a basis for the development of a new organic laser diode technology allying the advantages of a simple, cheap and tunable laser source and its suitability for a full and direct integration of organic-based optoelectronic platform.

该研究计划致力于结合一系列新型材料设计与改进方案，基于电学和光学表征的基础研究以及新型器件制备与表征来实现电泵浦激光。包括法布里—珀罗微腔和分布反馈光栅在内的谐振腔结构将被整合到一系列有机晶体管器件中。选择适当的增益材料对于有机激光的实现至关重要。基于此，以下三种材料将被应用于此项研究中：具有超低激光阈值的荧光染料，具有激光特性的热活化延迟荧光染料(TADF)以及热激活延迟荧光染料为基础的荧光分子系统。基于后两类材料的有机激光二极管可以捕获三线态发光来实现光信号放大。另外，将采取不同的措施来抑制高电流强度下的电发光效率的急剧降低，最优化器件结构来降低激光阈值，最终实现有机电泵浦激光制备。该研究成果可为新型有机激光二极管技术发展的提供基础。该项技术将发挥激光光源的简易，廉价，易可调性以及易于同基于有机物的光电平台直接全面整合的优点。

有机激光器是有机光电子领域的皇冠，也是很多科研工作梦寐以求的结果，该项技术将发挥激光光源的简易，廉价，易可调性的优点以及其易于同基于有机物的光电平台直接全面整合的优点。本研究计划致力于结合一系列新型材料设计与改进方案，基于电学和光学表征的基 础研究以及新型器件制备与表征来探索电泵浦激光的应用。包括法布里—珀罗微腔和分布反馈光栅在内的谐 振腔结构将被整合到有机无机钙钛矿和有机材料发光二极管中。本项目通过研究了适当的增益材料，主要包括具有超低激光阈值的荧光染料，具有激 光特性的热活化延迟荧光染料(TADF)以及热激活延迟荧光染料为基础的荧光分子系统。该研究成果可为新型有机激光二极管技术发展的提供基础。