Single-Emitter White OLEDs via Microcavity Spectral Engineering

IF 7.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Optical Materials Pub Date : 2025-08-11 DOI:10.1002/adom.202501358

Manish Kumar, Arpan Dutta, Hassan A. Qureshi, Michael A. Papachatzakis, Ahmed Gaber Abdelmagid, Konstantinos S. Daskalakis

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Abstract

White organic light-emitting diodes (WOLEDs) are promising candidates for next-generation lighting and display technologies. However, conventional WOLED fabrication often relies on complex doping schemes or multiple color stacked emitting layers, complicating device design, and fabrication. Here, a simple approach for fabricating ITO-free WOLEDs with a single-component, using a planar aluminium microcavity, is presented. By engineering the cavity and surface plasmon polariton modes around the emission resonance of the high-efficiency blue thermally activated delayed fluorescence emitter DMAC-DPS, electroluminescence that is spectrally broadened to white light, with a tunable color temperature ranging from 3790 to 5050 K, is achieved. The WOLEDs are top-emitting and reach an external quantum efficiency of >5%. The results are supported by optical simulations and transient emission measurements, providing insights into the emission kinetics.

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基于微腔光谱工程的单发射极白色oled

白色有机发光二极管（WOLEDs）是下一代照明和显示技术的有前途的候选者。然而，传统的WOLED制造往往依赖于复杂的掺杂方案或多色堆叠发射层，使器件设计和制造复杂化。本文提出了一种利用平面铝微腔制造无ito单元件WOLEDs的简单方法。通过在高效蓝光热激活延迟荧光发射器DMAC-DPS的发射共振周围设计腔体和表面等离子体激元模式，实现了光谱展宽到白光的电致发光，其色温范围为3790 ~ 5050 K。WOLEDs是顶发射的，外部量子效率达到5%。结果得到了光学模拟和瞬态发射测量的支持，提供了对发射动力学的见解。

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来源期刊

Advanced Optical Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS

CiteScore

13.70

自引率

6.70%

发文量

883

审稿时长

1.5 months

期刊介绍： Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.