In recent years, organic light-emitting device technology has expanded from organic light-emitting diodes (OLEDs) to organic semiconductor laser diodes (OSLDs) with the progress of sophisticated molecular and device architectural designs. In OLEDs, the development of thermally activated delayed fluorescence molecules has been intensively investigated recently. As a result, the internal quantum efficiency of OLEDs containing relatively simple aromatic compounds without precious metals has reached almost 100%. Furthermore, incorporating a distributed feedback resonator structure into the OLED architecture has yielded OSLDs that exhibit the features of current-pumped lasing. In this short review, the authors describe the recent paradigm shift from OLEDs to OSLDs, mainly from the perspective of materials innovation.

中文翻译：

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从有机发光二极管到有机半导体激光二极管的飞跃

近年来，随着复杂的分子和器件架构设计的发展，有机发光器件技术已经从有机发光二极管（OLED）扩展到有机半导体激光二极管（OSLD）。在OLED中，最近已对热活化延迟荧光分子的发展进行了深入研究。结果，包含相对简单的不含贵金属的芳族化合物的OLED的内部量子效率已达到近100％。此外，将分布式反馈谐振器结构合并到OLED架构中已产生了OSLD，这些OSLD表现出电流泵浦激光的特征。在这篇简短的评论中，作者主要从材料创新的角度描述了从OLED到OSLD的最新范式转变。