journal article·2024-08Open access

Enhancing Circularly Polarized Electroluminescence through Energy Transfer within a Chiral Polymer Host

Juan Manuel Moreno‐Naranjo, Francesco Furlan, Jingxiang Wang, Seán Timothy James Ryan, Tomas Matulaitis, Zhiyu Xu, Qianyi Zhang, Louis Minion, Marta Di Girolamo, Tamás Jávorfi, Giuliano Siligardi, Jessica Wade, Nicola Gasparini, Eli Zysman‐Colman, Matthew John Fuchter

Advanced Materials· Volume 36· Issue 33

Abstract

Abstract Organic light‐emitting diodes (OLEDs) that are able to emit high levels of circularly polarized (CP) light hold significant promise in numerous future technologies. Such devices require chiral emissive materials to enable CP electroluminescence. However, the vast majority of current OLED emitter classes, including the state‐of‐the‐art triplet‐harvesting thermally activated delayed fluorescence (TADF) materials, produce very low levels of CP electroluminescence. Here a host–guest strategy that allows for energy transfer between a chiral polymer host and a representative chiral TADF emitter is showcased. Such a mechanism results in a large amplification of the circular polarization of the emitter. As such, this study presents a promising avenue to further boost the performance of circularly polarized organic light‐emitting diode devices, enabling their further development and eventual commercialization.
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Research context

OpenAlex topics: Synthesis and Properties of Aromatic Compounds · Organic Light-Emitting Diodes Research · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry Molecular Sciences Research Hub Imperial College London White City Campus London W12 0BZ UK

Organic Semiconductor Centre EaStCHEM School of Chemistry University of St Andrews St Andrews KY16 9ST UK

Department of Engineering Science University of Oxford Parks Road Oxford OX1 3PJ UK

Department of Materials Imperial College London Prince Consort Road London SW7 2AZ UK

Centre for Processable Electronics Imperial College London South Kensington Campus London SW7 2AZ UK

Diamond Light Source Ltd Harwell Science and Innovation Campus Didcot Oxfordshire OX11 0DE UK

Funding

Engineering and Physical Sciences Research Council · Diamond Light Source · China Scholarship Council · Air Force Office of Scientific Research · HORIZON EUROPE Framework Programme · Royal Society

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