Triplet manipulation for strong luminescence

• 作者: Guohua Xie Liming Ding
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2020,（21）
• 所属期刊栏目: RESEARCH HIGHLIGHTS
• 页码范围: 1780-1782
• 页数: 3页
• 语种: 英文

摘要

The excitons in organic semiconductors undergo either radiative or non-radiative decay after excitation.Unlike the singlets in the fluorescence counterparts, the triplets in the heavy-metal based phosphorescent emitter, thermally activated delayed fluorescence emitter with a small singlet-triplet gap, and metal-free room-temperature phosphorescence emitter with strong spinorbital coupling, respectively, could be feasibly harvested for photon generation, which are responsible for the theoretical 100％ internal quantum efficiency.The emerging research on triplet manipulation of the heavy-metal-free organic emitters opens a new door for chasing more cost-effective applications in displays,solid-state lighting, data encryption, biosensing and medical treatments.