Breakthrough in wearable display technology: DGIST-UNIST team perfects perovskite red light devices

Research collaboration between Professor Jiwoong Yang’s team at DGIST and Professor Moon Kee Choi’s team at UNIST has resulted in significant advances in wearable display technology. Using perovskite quantum dots and selective surface modification techniques, teams overcame historical limitations of red perovskite materials by increasing both stability and electrical properties. Replacing iodine with bromine in the surface treatment process played a key role, enlarging the perovskite structures and improving the surface-to-volume ratio, while maintaining key bandgap energies. This innovation led to the development of high-performance skin-attached pure red perovskite light emitting devices with an impressive external quantum efficiency (EQE) of up to 19.8%.

This suggests broader applications in fields such as virtual reality (VR), augmented reality (AR) and smart wearable devices. The research not only brings us closer to the commercialization of pure red perovskite displays, but also highlights the versatility and potential of perovskite materials in various technological areas. Supported by the Ministry of Science and ICT, the National Research Foundation of Korea and the Pohang Accelerator Laboratory, this pioneering work was recognized with publication in the prestigious journal Materials Today, marking a significant step forward in the field of wearable technology.

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