Research

  Quantum dots (QDs) are inorganic semiconductor nanocrystals with unique physical and optical properties, making them a promising next-generation optical material for academic and industrial research. Key advantages of QDs include the ability to easily tune the energy bandgap through the optimization of their composition and size, a wide color gamut based on narrow emission spectra, and cost-effective solution processability. Based on these advantages, QDs are currently being utilized in various fields such as displays, image sensors, energy devices, and bio-applications. Among these applications, quantum dot light-emitting diodes (QLEDs or QD-LEDs), which employ the electroluminescence (EL) of QDs, stand out as one of the most actively researched and developed areas.

  Our research group focuses on developing QLEDs with high efficiency and stability, and applying them to next-generation display technologies such as free-form displays, sensor-integrated wearable displays, and transparent displays. Our goal is to create a new user experience through next-generation displays, and also contribute to sustainable development through high-efficiency energy conversion devices. 

  Stretchable electronics have garnered significant attention as a promising alternative to conventional rigid electronics, particularly for next-generation human-friendly electronic applications. They can accommodate mechanical deformations during operation and hold great potential for a wide range of bio-electronics applications that require mechanical deformability, such as personalized healthcare systems, wearable smart displays, and implantable prosthetic devices. Stretchable sensors, for example, can mimic the unique mechanical properties of soft and deformable human tissues, achieving stable conformal contact with human skin and internal organs.  This unique biotic/abiotic interfacing results in outstanding sensing accuracy and extraordinary signal-to-noise ratios.

  Our research group's objective is to develop stretchable integrated electronic systems comprising not only stretchable sensory components but also advanced stretchable electronic components for signal processing, feedback actuation, real-time display, wireless communication, and power supply. We also aim to develop high-performance intrinsically soft electronic materials that can maintain their original electrical properties under applied strain. In pursuit of this goal, we will study a comprehensive set of material-processing technologies, including their synthesis, assembly, and integration.