Heavy-Atom-Free Room-Temperature Phosphorescent Organic Light-Emitting Diodes Enabled by Excited States Engineering
Heavy-Atom-Free Room-Temperature Phosphorescent Organic Light-Emitting Diodes Enabled by Excited States Engineering
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DOI：
10.1021/acsami.0c17295
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发表时间：
2021-01-06
影响因子：
9.5
通讯作者：
Data, Przemyslaw
中科院分区：
文献类型：
--
作者：
Higginbotham, Heather F.;Okazaki, Masato;Data, Przemyslaw
室温磷光材料具有独特的光物理特性，为其在光电子学领域的应用提供了广阔的前景。然而，能够实现清晰的电致磷光的无重原子有机发光体还很少被开发。本文提出了一种设计有机电致发光二极管用无重原子有机室温磷光体的新方法。通过选择合适的基质，微妙地调节单态和三态激发态的能量，可以定制发射性质，并在热激活延迟荧光和室温磷光之间切换发射通道。此外，利用所研制的发射体实现了高效、无重原子的室温磷光有机发光二极管。
Room temperature phosphorescence materials offer great opportunities for applications in optoelectronics, due to their unique photophysical characteristics. However, heavy-atom-free organic emitters that can realize distinct electrophosphorescence are rarely exploited. Herein a new approach for designing heavy-atom-free organic room temperature phosphorescence emitters for organic light-emitting diodes is presented. The subtle tuning of the singlet and triplet excited states energies by appropriate choice of host matrix allows tailored emission properties and switching of emission channels between thermally activated delayed fluorescence and room temperature phosphorescence. Moreover, an efficient and heavy-atom-free room temperature phosphorescence organic light-emitting diode using the developed emitter is realized.