In a significant development, the collaboration between Professor Jiwoong Yang’s team at DGIST and Professor Moon Kee Choi’s team at UNIST has achieved an advancement in wearable display technology. By utilising perovskite quantum dots and employing selective surface modification techniques, the teams have successfully addressed the historical limitations of red perovskite materials, significantly enhancing both stability and electrical properties. One noteworthy aspect of this innovation is the substitution of iodine with bromine in the surface treatment process, which has played a critical role in enlarging perovskite structures and improving surface-to-volume ratios while maintaining crucial band gap energies. The outcome of this groundbreaking work is the development of high-efficiency, skin-attachable perovskite pure red light-emitting devices, boasting an outstanding external quantum efficiency (EQE) of up to 19.8%.
The impact of this innovation holds great promise for a wide range of applications in fields such as virtual reality (VR), augmented reality (AR), and smart wearable devices. This advancement 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 domains. Leveraging the support of the Ministry of Science and ICT, the National Research Foundation of Korea, and the Pohang Accelerator Laboratory, this pioneering work has gained recognition through publication in the esteemed journal “Materials Today,” marking a significant step forward in the realm of wearable technology.
The research collaboration between Professor Jiwoong Yang’s team at DGIST and Professor Moon Kee Choi’s team at UNIST has achieved an impressive feat in the realm of wearable display technology. With a focus on leveraging perovskite quantum dots and employing selective surface modification techniques, the teams have successfully addressed historical limitations of red perovskite materials, thereby enhancing both stability and electrical properties. Through the substitution of iodine with bromine in the surface treatment process, perovskite structures have been enlarged, improving surface-to-volume ratios while maintaining crucial band gap energies. This has resulted in the development of high-efficiency, skin-attachable perovskite pure red light-emitting devices, boasting an impressive external quantum efficiency (EQE) of up to 19.8%.
The broader implications of this breakthrough are vast, promising applications in fields such as virtual reality (VR), augmented reality (AR), and smart wearable devices. This advancement not only brings us closer to the commercialization of pure red perovskite displays but also underscores the versatility and potential of perovskite materials in various technological domains. Supported by the Ministry of Science and ICT, the National Research Foundation of Korea, and the Pohang Accelerator Laboratory, this pioneering work has been recognised with publication in the prestigious journal “Materials Today,” marking a significant step forward in the realm of wearable technology.