Symposium X—MRS/The Kavli Foundation Frontiers of Materials

PeLEDs offer vivid colors, high efficiency and tunable emission, enabled by advances in nanocrystalline perovskites, dimensional engineering (from bulk 3D to quasi-2D and nanocrystals) and defect passivation. These strategies enhance exciton confinement and radiative recombination, positioning perovskites as leading candidates for next-generation light-emitting applications.^1–4

Particularly, core–shell perovskite nanocrystals (PNCs) demonstrate commercially viable stability and high-resolution patterning capabilities, with complete blue light absorption within micrometer-thick layers. This makes them ideal for stable, high-performance color-conversion displays, applicable in augmented/virtual reality (AR/VR) displays as well as large-area televisions and tablet displays.

Beyond PeLEDs, ISOLEDs are expanding display applications into wearables and deformable electronics. By integrating 2D electrode materials such as graphene and MXenes,^5–7 along with stretchable charge-injection layers and stretchable emitting layers,⁸ these devices achieve high efficiency while maintaining mechanical resilience, paving the way for next-generation flexible adaptive optoelectronics.

Finally, neuromorphic intelligent displays, inspired by biological neural systems, are poised to redefine human–machine interfaces by seamlessly integrating sensory perception and computational processing combined with the display architecture. Our work on artificial organic synaptic transistors with light-emitting functionality demonstrates that a single display device can effectively mimic biological sensory neurons by simultaneously performing event-driven neuromorphic processing, real-time stimulus visualization, and integration-and-firing functions, laying the foundation for next-generation interactive and adaptive displays.⁹

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